9,579 results match your criteria TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik[Journal]


Accuracy of within- and among-family genomic prediction for Fusarium head blight and Septoria tritici blotch in winter wheat.

Theor Appl Genet 2018 Dec 14. Epub 2018 Dec 14.

State Plant Breeding Institute, University of Hohenheim, Fruwirthstr. 21, 70599, Stuttgart, Germany.

Genomic selection is an approach that uses whole-genome marker data to predict breeding values of genotypes and holds the potential to improve the genetic gain in breeding programs. In this study, two winter wheat populations (DS1 and DS2) consisting of 438 and 585 lines derived from six and eight bi-parental families, respectively, were genotyped with genome-wide single nucleotide polymorphism markers and phenotyped for Fusarium head blight and Septoria tritici blotch severity, plant height and heading date. We used ridge regression-best linear unbiased prediction to investigate the potential of genomic selection under different selection scenarios: prediction across each winter wheat population, within- and among-family prediction in each population, and prediction from DS1 to DS2 and vice versa. Read More

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http://dx.doi.org/10.1007/s00122-018-3264-6DOI Listing
December 2018

Breaking the curse of dimensionality to identify causal variants in Breeding 4.

Theor Appl Genet 2018 Dec 13. Epub 2018 Dec 13.

Institute for Genomic Diversity, Institute of Biotechnology, Cornell University, 175 Biotechnology Building, Ithaca, NY, 14853, USA.

In the past, plant breeding has undergone three major transformations and is currently transitioning to a new technological phase, Breeding 4. This phase is characterized by the development of methods for biological design of plant varieties, including transformation and gene editing techniques directed toward causal loci. The application of such technologies will require to reliably estimate the effect of loci in plant genomes by avoiding the situation where the number of loci assayed (p) surpasses the number of plant genotypes (n). Read More

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http://link.springer.com/10.1007/s00122-018-3267-3
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http://dx.doi.org/10.1007/s00122-018-3267-3DOI Listing
December 2018
2 Reads

Characterisation of barley resistance to rhynchosporium on chromosome 6HS.

Theor Appl Genet 2018 Dec 13. Epub 2018 Dec 13.

The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK.

Key Message: Major resistance gene to rhynchosporium, Rrs18, maps close to the telomere on the short arm of chromosome 6H in barley. Rhynchosporium or barley scald caused by a fungal pathogen Rhynchosporium commune is one of the most destructive and economically important diseases of barley in the world. Testing of Steptoe × Morex and CIho 3515 × Alexis doubled haploid populations has revealed a large effect QTL for resistance to R. Read More

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http://link.springer.com/10.1007/s00122-018-3262-8
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http://dx.doi.org/10.1007/s00122-018-3262-8DOI Listing
December 2018
1 Read

Characterization of Pm63, a powdery mildew resistance gene in Iranian landrace PI 628024.

Theor Appl Genet 2018 Dec 12. Epub 2018 Dec 12.

Wheat, Peanut and Other Field Crops Research Unit, USDA-ARS, Stillwater, OK, 74075, USA.

Key Message: A new powdery mildew resistance gene conferring a wide spectrum of resistance to Bgt isolates in the USA, Pm63 , was identified in Iranian wheat landrace PI 628024 and mapped to the terminal region of the long arm of chromosome 2B. Powdery mildew is a globally important wheat disease causing severe yield losses, and host resistance is the preferred strategy for managing this disease. The objective of this study was to characterize a powdery mildew resistance gene in Iranian landrace PI 628024, which exhibited a wide spectrum of resistance to representative Blumeria graminis f. Read More

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http://dx.doi.org/10.1007/s00122-018-3265-5DOI Listing
December 2018

ZmAPRG, an uncharacterized gene, enhances acid phosphatase activity and Pi concentration in maize leaf during phosphate starvation.

Theor Appl Genet 2018 Dec 6. Epub 2018 Dec 6.

Key Laboratory of Biotechnology and Crop Quality Improvement, Maize Research Institute, Ministry of Agriculture, Southwest University, Chongqing, 400715, China.

Key Message: An uncharacterized gene, ZmAPRG, isolated by map-based cloning, enhances acid phosphatase activity and phosphate concentration in maize leaf during phosphate starvation. Acid phosphatase (APase) plays important roles in the absorption and utilization of phosphate (Pi) during maize growth. The information on genes regulating the acid phosphatase activity (APA) in maize leaves remains obscured. Read More

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http://dx.doi.org/10.1007/s00122-018-3257-5DOI Listing
December 2018

Genotyping-by-sequencing based genetic mapping reveals large number of epistatic interactions for stem rot resistance in groundnut.

Theor Appl Genet 2018 Dec 11. Epub 2018 Dec 11.

ICAR-Directorate of Groundnut Research (ICAR-DGR), Junagadh, 362001, India.

Key Message: Genetic mapping identified large number of epistatic interactions indicating the complex genetic architecture for stem rot disease resistance. Groundnut (Arachis hypogaea) is an important global crop commodity and serves as a major source of cooking oil, diverse confectionery preparations and livestock feed. Stem rot disease caused by Sclerotium rolfsii is the most devastating disease of groundnut and can cause up to 100% yield loss. Read More

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http://dx.doi.org/10.1007/s00122-018-3255-7DOI Listing
December 2018
1 Read

Mapping resistance to Phytophthora root rot identifies independent loci from cultivated (Cicer arietinum L.) and wild (Cicer echinospermum P.H. Davis) chickpea.

Theor Appl Genet 2018 Dec 7. Epub 2018 Dec 7.

School of Agriculture, Food and Wine, University of Adelaide, Waite Campus, PMB1, Glen Osmond, SA, 5064, Australia.

Key Message: Major QTL for Phytophthora root rot resistance have been identified in three mapping populations with independent sources of resistance contributed by C. echinospermum and C. arietinum. Read More

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http://link.springer.com/10.1007/s00122-018-3256-6
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http://dx.doi.org/10.1007/s00122-018-3256-6DOI Listing
December 2018
1 Read
3.790 Impact Factor

Divergence between bread wheat and Triticum militinae in the powdery mildew resistance QPm.tut-4A locus and its implications for cloning of the resistance gene.

Theor Appl Genet 2018 Dec 7. Epub 2018 Dec 7.

Institute of Experimental Botany of the Czech Academy of Sciences, Centre of the Region Haná for Biotechnological and Agricultural Research, Šlechtitelů 31, 78371, Olomouc, Czech Republic.

A segment of Triticum militinae chromosome 7G harbors a gene(s) conferring powdery mildew resistance which is effective at both the seedling and the adult plant stages when transferred into bread wheat (T. aestivum). The introgressed segment replaces a piece of wheat chromosome arm 4AL. Read More

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http://dx.doi.org/10.1007/s00122-018-3259-3DOI Listing
December 2018

Genetic analysis of cob resistance to F. verticillioides: another step towards the protection of maize from ear rot.

Theor Appl Genet 2018 Dec 10. Epub 2018 Dec 10.

College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China.

Key Message: We lay the foundation for further research on maize resistance to Fusarium verticillioides cob rot by identifying a candidate resistance gene. Fusarium verticillioides ear rot is the most common type of maize ear rot in the Huanghuaihai Plain of China. Ear rot resistance includes cob and kernel resistance. Read More

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http://dx.doi.org/10.1007/s00122-018-3258-4DOI Listing
December 2018

Introgression reshapes recombination distribution in grapevine interspecific hybrids.

Theor Appl Genet 2018 Dec 8. Epub 2018 Dec 8.

SVQV UMR-A 1131, INRA, Université de Strasbourg, 68000, Colmar, France.

Key Message: In grapevine interspecific hybrids, meiotic recombination is suppressed in homeologous regions and enhanced in homologous regions of recombined chromosomes, whereas crossover rate remains unchanged when chromosome pairs are entirely homeologous. Vitis rotundifolia, an American species related to the cultivated European grapevine Vitis vinifera, has a high level of resistance to several grapevine major diseases and is consequently a valuable resource for grape breeding. However, crosses between both species most often lead to very few poorly fertile hybrids. Read More

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http://link.springer.com/10.1007/s00122-018-3260-x
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http://dx.doi.org/10.1007/s00122-018-3260-xDOI Listing
December 2018
3 Reads

A wheat protein kinase gene TaSnRK2.9-5A associated with yield contributing traits.

Theor Appl Genet 2018 Dec 5. Epub 2018 Dec 5.

National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.

Key Message: We developed breeder-friendly high-throughput and cost-effective KASP marker for marker-assisted selection for grain yield related traits in wheat. Plant-specific protein kinase, SnRK2s, is a major family of signaling genes associated with metabolic regulations, nutrient utilization and response to external stimuli. In the present study, three copies of TaSnRK2. Read More

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http://link.springer.com/10.1007/s00122-018-3247-7
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http://dx.doi.org/10.1007/s00122-018-3247-7DOI Listing
December 2018
4 Reads

Exploring and exploiting the genetic variation of Fusarium head blight resistance for genomic-assisted breeding in the elite durum wheat gene pool.

Theor Appl Genet 2018 Dec 1. Epub 2018 Dec 1.

Department of Agrobiotechnology (IFA-Tulln), Institute of Biotechnology in Plant Production, University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Str. 20, 3430, Tulln, Austria.

Key Message: Genomic selection had a higher selection response for FHB resistance than phenotypic selection, while association mapping identified major QTL on chromosome 3B unaffected by plant height and flowering date. Fusarium head blight (FHB) is one of the most destructive diseases of durum wheat. Hence, minimizing losses in yield, quality and avoiding contamination with mycotoxins are of pivotal importance, as durum wheat is mostly used for human consumption. Read More

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http://dx.doi.org/10.1007/s00122-018-3253-9DOI Listing
December 2018

Whole genome sequencing of a MAGIC population identified genomic loci and candidate genes for major fiber quality traits in upland cotton (Gossypium hirsutum L.).

Theor Appl Genet 2018 Dec 1. Epub 2018 Dec 1.

Cotton Fiber Bioscience Research Unit, USDA-ARS-SRRC, New Orleans, LA, 70124, USA.

Key Message: Significant associations between candidate genes and six major cotton fiber quality traits were identified in a MAGIC population using GWAS and whole genome sequencing. Upland cotton (Gossypium hirsutum L.) is the world's major renewable source of fibers for textiles. Read More

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http://dx.doi.org/10.1007/s00122-018-3254-8DOI Listing
December 2018

Pooled DNA sequencing to identify SNPs associated with a major QTL for bacterial wilt resistance in Italian ryegrass (Lolium multiflorum Lam.).

Theor Appl Genet 2018 Nov 30. Epub 2018 Nov 30.

Molecular Plant Breeding, Institute of Agricultural Sciences, ETH Zürich, Universitätsstrasse 2, 8092, Zurich, Switzerland.

Key Message: SNPs and candidate genes associated with bacterial wilt resistance in Italian ryegrass were identified by sequencing the parental plants and pooled F progeny of a segregating population. Italian ryegrass (Lolium multiflorum Lam.) is one of the most important forage grass species in temperate regions. Read More

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http://dx.doi.org/10.1007/s00122-018-3250-zDOI Listing
November 2018

Mapping versatile QTL for soybean downy mildew resistance.

Theor Appl Genet 2018 Dec 4. Epub 2018 Dec 4.

Division of Basic Research, Institute of Crop Science, National Agricultural and Food Research Organization (NARO), 2-1-2 Kannondai, Tsukuba, Ibaraki, 305-8518, Japan.

Key Message: Three versatile QTL for soybean downy mildew resistance in Japan were detected using five RIL populations and confirmed using recombinant fixed pairs or a backcrossed line. Downy mildew reduces soybean seed quality and size. It is a problem in Japan, where 90% of soybean grown is used as food. Read More

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http://dx.doi.org/10.1007/s00122-018-3251-yDOI Listing
December 2018
3.790 Impact Factor

Hybrid durum wheat: heterosis of grain yield and quality traits and genetic architecture of anther extrusion.

Theor Appl Genet 2018 Nov 29. Epub 2018 Nov 29.

State Plant Breeding Institute, University of Hohenheim, 70593, Stuttgart, Germany.

Key Message: Hybrid durum has a promising yield potential coupled with good quality, but the efficiency of hybrid seed production must be improved. Hybrid breeding is a tremendous success story in many crops, but has not yet made a breakthrough in wheat, mainly due to inefficient hybrid seed production. In this study, we investigated the heterosis for grain yield and important quality traits in durum wheat of 33 hybrids built up from 24 parental lines, as well as the variation in anther extrusion and its genetic architecture in a vast collection of Central European elite durum lines. Read More

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http://link.springer.com/10.1007/s00122-018-3248-6
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http://dx.doi.org/10.1007/s00122-018-3248-6DOI Listing
November 2018
3 Reads

Across-years prediction of hybrid performance in maize using genomics.

Theor Appl Genet 2018 Nov 29. Epub 2018 Nov 29.

Institute of Plant Breeding, Seed Science and Population Genetics, University of Hohenheim, 70599, Stuttgart, Germany.

Key Message: Inclusion of historical training data improved the genomics-based prediction of performance of maize hybrids, the extent depending on the phenotypic trait and genotype-by-year interaction. Prediction of hybrid performance using existing phenotypic data on previous hybrids combined with molecular data collected on the parent lines allows to identify the most promising candidates from a huge number of possible hybrids at an early stage. Phenotypic data on yield and dry matter of 1970 grain maize hybrids from 19 years of a public breeding program were aggregated considering the underlying structure of factorial sets of hybrids. Read More

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http://dx.doi.org/10.1007/s00122-018-3249-5DOI Listing
November 2018

Reciprocal recurrent genomic selection: an attractive tool to leverage hybrid wheat breeding.

Theor Appl Genet 2018 Nov 28. Epub 2018 Nov 28.

Department of Breeding Research, Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), 06466, Gatersleben, Germany.

Key Message: Using a two-part breeding strategy based on a population improvement and a product development component can leverage hybrid wheat breeding. Despite the technological advance of methods to facilitate hybrid breeding in self-pollinating crops, line breeding is still the dominating breeding strategy. This is likely due to a higher long-term selection gain in line compared to hybrid breeding. Read More

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http://dx.doi.org/10.1007/s00122-018-3244-xDOI Listing
November 2018
2 Reads

Development and use of chromosome segment substitution lines as a genetic resource for crop improvement.

Theor Appl Genet 2018 Nov 27. Epub 2018 Nov 27.

ICAR- National Professor Project, ICAR- Indian Institute of Rice Research, Hyderabad, India.

Key Message: CSSLs are a complete library of introgression lines with chromosomal segments of usually a distant genotype in an adapted background and are valuable genetic resources for basic and applied research on improvement of complex traits. Chromosome segment substitution lines (CSSLs) are genetic stocks representing the complete genome of any genotype in the background of a cultivar as overlapping segments. Ideally, each CSSL has a single chromosome segment from the donor with a maximum recurrent parent genome recovered in the background. Read More

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http://dx.doi.org/10.1007/s00122-018-3219-yDOI Listing
November 2018

Manipulation of crossover frequency and distribution for plant breeding.

Theor Appl Genet 2018 Nov 27. Epub 2018 Nov 27.

Institut Jean-Pierre Bourgin, INRA, AgroParisTech, CNRS, Université Paris-Saclay, 78000, Versailles, France.

The crossovers (COs) that occur during meiotic recombination lead to genetic diversity upon which natural and artificial selection can act. The potential of tinkering with the mechanisms of meiotic recombination to increase the amount of genetic diversity accessible for breeders has been under the research spotlight for years. A wide variety of approaches have been proposed to increase CO frequency, alter CO distribution and induce COs between non-homologous chromosomal regions. Read More

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http://link.springer.com/10.1007/s00122-018-3240-1
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http://dx.doi.org/10.1007/s00122-018-3240-1DOI Listing
November 2018
1 Read

Fine mapping and molecular marker development of the Sm gene conferring resistance to gray leaf spot (Stemphylium spp.) in tomato.

Theor Appl Genet 2018 Nov 26. Epub 2018 Nov 26.

Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, No. 12, Zhongguancun Nandajie, Haidian District, Beijing, 100081, China.

Key Message: The tomato gray leaf spot resistance gene Sm was fine-mapped in a 185-kb region through a map-based cloning strategy and genome-wide association study; a candidate gene was proved to be involved in Sm-mediated resistance through transient gene silencing. Gray leaf spot, caused by Stemphylium spp., is a warm weather foliar disease in tomato (Solanum lycopersicum L). Read More

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http://dx.doi.org/10.1007/s00122-018-3242-zDOI Listing
November 2018

QTL mapping of insect resistance components of Solanum galapagense.

Theor Appl Genet 2018 Nov 23. Epub 2018 Nov 23.

Plant Breeding, Wageningen University and Research, PO Box 386, 6700 AJ, Wageningen, The Netherlands.

Key Message: QTLs for insect resistance parameters, trichome type IV development, and more than 200 non-volatile metabolites, including 76 acyl sugars, all co-locate at the end of Chromosome 2 of Solanum galapagense. Host plant resistance is gaining importance as more and more insecticides are being banned due to environmental concerns. In tomato, resistance towards insects is found in wild relatives and has been attributed to the presence of glandular trichomes and their specific phytochemical composition. Read More

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http://dx.doi.org/10.1007/s00122-018-3239-7DOI Listing
November 2018
4 Reads

Independent activation of the BoMYB2 gene leading to purple traits in Brassica oleracea.

Theor Appl Genet 2018 Nov 22. Epub 2018 Nov 22.

Key Laboratory of Horticultural Plant Biology, Ministry of Education, Key Laboratory of Horticultural Crop Biology and Genetic Improvement (Central Region), MOA, College of Horticulture and Forestry Sciences, Huazhong Agricultural University, Wuhan, 430070, People's Republic of China.

Key Message: Transposon insertion and point mutation independently activated the BoMYB2 gene in three purple cultivars of Brassica oleracea including kale, kohlrabi, and cabbage. Several varieties of B. oleracea have both green and purple cultivars. Read More

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http://dx.doi.org/10.1007/s00122-018-3245-9DOI Listing
November 2018
8 Reads

Construction of introgression lines of Oryza rufipogon and evaluation of important agronomic traits.

Theor Appl Genet 2018 Nov 21. Epub 2018 Nov 21.

Biotechnology Research Institute/National Key Facility for Genetic Resources and Gene Improvement, The Chinese Academy of Agricultural Sciences, Beijing, 100081, China.

Cultivated rice (Oryza sativa) originated from common wild rice (Oryza rufipogon) and inherited its advantages. However, during the rice domestication process, some valuable features of wild rice, such as tolerance to biotic and abiotic stress, were lost. To fully utilize wild rice germplasm resources, we constructed a set of introgression lines (ILs) using a common wild rice material from Lingshui, China. Read More

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http://dx.doi.org/10.1007/s00122-018-3241-0DOI Listing
November 2018

Fine mapping of qGL5H, a major grain length locus in barley (Hordeum vulgare L.).

Theor Appl Genet 2018 Nov 21. Epub 2018 Nov 21.

Western Barley Genetic Alliance, Murdoch University, Perth, WA, Australia.

Key Message: A major grain length QTL on chromosome 5H was fine mapped from 180.5 to 1.7 Mb. Read More

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http://dx.doi.org/10.1007/s00122-018-3243-yDOI Listing
November 2018
3 Reads

Dissecting the genetics underlying the relationship between protein content and grain yield in a large hybrid wheat population.

Theor Appl Genet 2018 Nov 19. Epub 2018 Nov 19.

State Plant Breeding Institute, University of Hohenheim, 70593, Stuttgart, Germany.

Key Message: Additive and dominance effect QTL for grain yield and protein content display antagonistic pleiotropic effects, making genomic selection based on the index grain protein deviation a promising method to alleviate the negative correlation between these traits in wheat breeding. Grain yield and quality-related traits such as protein content and sedimentation volume are key traits in wheat breeding. In this study, we used a large population of 1604 hybrids and their 135 parental components to investigate the genetics and metabolomics underlying the negative relationship of grain yield and quality, and evaluated approaches for their joint improvement. Read More

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http://dx.doi.org/10.1007/s00122-018-3236-xDOI Listing
November 2018

Loci and candidate genes in soybean that confer resistance to Fusarium graminearum.

Theor Appl Genet 2018 Nov 19. Epub 2018 Nov 19.

Key Laboratory of Soybean Biology in Chinese Ministry of Education (Key Laboratory of Soybean Biology and Breeding/Genetics of Chinese Agriculture Ministry), Northeast Agricultural University, Harbin, 150030, China.

Key Message: Association analysis techniques were used to identify and verify twelve single nucleotide polymorphisms (SNPs) associated with Fusarium graminearum resistance. Two novel candidate genes were obtained. Fusarium graminearum causes seed and root rot and seedling damping-off of soybean, leading to severe yield loss. Read More

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http://dx.doi.org/10.1007/s00122-018-3230-3DOI Listing
November 2018

Connecting genome structural variation with complex traits in crop plants.

Theor Appl Genet 2018 Nov 17. Epub 2018 Nov 17.

Agriculture and Agri-Food Canada, 107 Science Place, Saskatoon, SK, S7N OX2, Canada.

Key Message: Structural genome variation is a major determinant of useful trait diversity. We describe how genome analysis methods are enabling discovery of trait-associated structural variants and their potential impact on breeding. As our understanding of complex crop genomes continues to grow, there is growing evidence that structural genome variation plays a major role in determining traits important for breeding and agriculture. Read More

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http://link.springer.com/10.1007/s00122-018-3233-0
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http://dx.doi.org/10.1007/s00122-018-3233-0DOI Listing
November 2018
16 Reads

Different loci associated with root and foliar resistance to sudden death syndrome (Fusarium virguliforme) in soybean.

Theor Appl Genet 2018 Nov 16. Epub 2018 Nov 16.

Department of Plant, Soil and Microbial Sciences, Michigan State University, 1066 Bogue St., East Lansing, MI, 48824-1325, USA.

Key Message: Different loci associated with root resistance to F. virguliforme colonization and foliar resistance to phytotoxin damage in soybean. Use of resistant cultivars is the most efficacious approach to manage soybean sudden death syndrome (SDS), caused by Fusarium virguliforme. Read More

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http://link.springer.com/10.1007/s00122-018-3237-9
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http://dx.doi.org/10.1007/s00122-018-3237-9DOI Listing
November 2018
2 Reads

Genetic architecture of wheat stripe rust resistance revealed by combining QTL mapping using SNP-based genetic maps and bulked segregant analysis.

Theor Appl Genet 2018 Nov 16. Epub 2018 Nov 16.

College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, People's Republic of China.

Key Message: A major stripe rust resistance QTL was mapped to a 0.4 centimorgan (cM) genetic region on the long arm of chromosome 7B, using combined genome-wide linkage mapping and bulk segregant analysis. The German winter wheat cv. Read More

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http://dx.doi.org/10.1007/s00122-018-3231-2DOI Listing
November 2018

An evolutionarily conserved non-synonymous SNP in a leucine-rich repeat domain determines anthracnose resistance in watermelon.

Theor Appl Genet 2018 Nov 16. Epub 2018 Nov 16.

Department of Integrative Plant Science, Chung-Ang University, Anseong, 17546, Republic of Korea.

Key Message: A non-synonymous SNP of CC-NBS-LRR was firstly mapped to confer resistance to anthracnose in watermelon. Newly proposed LRR domain harboring the SNP is evolutionary conserved in the Cucurbitaceae and Fabaceae. Anthracnose disease caused by Colletotrichum devastates many plants. Read More

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http://link.springer.com/10.1007/s00122-018-3235-y
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http://dx.doi.org/10.1007/s00122-018-3235-yDOI Listing
November 2018
4 Reads

Prospects of pan-genomics in barley.

Theor Appl Genet 2018 Nov 16. Epub 2018 Nov 16.

Leibniz Institute of Plant Genetics and Crop Plant Research (IPK) Gatersleben, Corrensstraße 3, 06466, Seeland, Germany.

The concept of a pan-genome refers to intraspecific diversity in genome content and structure, encompassing both genes and intergenic space. Pan-genomic studies employ a combination of de novo sequence assembly and reference-based alignment to discover and genotype structural variants. The large size and complex structure of Triticeae genomes were for a long time an obstacle for genomic research in barley and its relatives. Read More

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http://dx.doi.org/10.1007/s00122-018-3234-zDOI Listing
November 2018

Molecular characterization of genomic regions for resistance to Pythium ultimum var. ultimum in the soybean cultivar Magellan.

Theor Appl Genet 2018 Nov 15. Epub 2018 Nov 15.

Division of Plant Science, University of Missouri, Columbia, MO, 65211, USA.

Key Message: Two novel QTL for resistance to Pythium ultimum var. ultimum were identified in soybean using an Illumina SNP Chip and whole genome re-sequencing. Pythium ultimum var. Read More

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http://link.springer.com/10.1007/s00122-018-3228-x
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http://dx.doi.org/10.1007/s00122-018-3228-xDOI Listing
November 2018
4 Reads

Identification of a major QTL on chromosome arm 2AL for reducing yellow rust severity from a Chinese wheat landrace with evidence for durable resistance.

Theor Appl Genet 2018 Nov 13. Epub 2018 Nov 13.

Department of Plant Pathology, China Agricultural University, Beijing, 100193, People's Republic of China.

Key Message: A QTL on 2AL for reducing yellow rust severity was identified from a Chinese wheat landrace, being more effective than Yr18, with evidence for durable resistance from field observations. Utilization of wheat resistance is an important strategy to control yellow rust. The Chinese wheat landrace Hong Qimai (HQM) and the advanced breeding line AQ24788-83 (AQ; a progeny of HQM) can significantly reduce disease severity at the adult-plant growth stage. Read More

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http://link.springer.com/10.1007/s00122-018-3232-1
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http://dx.doi.org/10.1007/s00122-018-3232-1DOI Listing
November 2018
3 Reads
3.790 Impact Factor

Enhancing grain size in durum wheat using RNAi to knockdown GW2 genes.

Theor Appl Genet 2018 Nov 13. Epub 2018 Nov 13.

Department of Agriculture and Forest Sciences, University of Tuscia, Via S. Camillo de Lellis, 01100, Viterbo, Italy.

Key Message: Knocking down GW2 enhances grain size by regulating genes encoding the synthesis of cytokinin, gibberellin, starch and cell wall. Raising crop yield is a priority task in the light of the continuing growth of the world's population and the inexorable loss of arable land to urbanization. Here, the RNAi approach was taken to reduce the abundance of Grain Weight 2 (GW2) transcript in the durum wheat cultivar Svevo. Read More

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http://link.springer.com/10.1007/s00122-018-3229-9
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http://dx.doi.org/10.1007/s00122-018-3229-9DOI Listing
November 2018
5 Reads

A major QTL and candidate genes for capsaicinoid biosynthesis in the pericarp of Capsicum chinense revealed using QTL-seq and RNA-seq.

Theor Appl Genet 2018 Nov 13. Epub 2018 Nov 13.

Department of Plant Science, Plant Genomics and Breeding Institute, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 151-921, Republic of Korea.

Key Message: A major QTL and candidate genes controlling capsaicinoid content in the pericarp were identified by QTL-seq and RNA-seq in Capsicum chinense. Capsaicinoid biosynthesis was previously thought to be restricted to the placental tissue; however, the recent discovery of their biosynthesis in the pericarp provides new opportunities to increase the capsaicinoid content in pepper fruits. Currently, the genetic mechanisms regulating capsaicinoid biosynthesis in the pericarp remain unknown. Read More

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http://link.springer.com/10.1007/s00122-018-3238-8
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http://dx.doi.org/10.1007/s00122-018-3238-8DOI Listing
November 2018
6 Reads

Genetic and transcriptional variations in NRAMP-2 and OPAQUE1 genes are associated with salt stress response in wheat.

Theor Appl Genet 2018 Nov 3. Epub 2018 Nov 3.

INRES-Pflanzenzuchtung, Rheinische Friedrich-Wilhelms-Universitat, Bonn, Germany.

Key Message: SNP alleles on chromosomes 4BL and 6AL are associated with sensitivity to salt tolerance in wheat and upon validation can be exploited in the development of salt-tolerant wheat varieties. The dissection of the genetic and molecular components of salt stress response offers strong opportunities toward understanding and improving salt tolerance in crops. In this study, GWAS was employed to identify a total of 106 SNP loci (R = 0. Read More

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http://link.springer.com/10.1007/s00122-018-3220-5
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http://dx.doi.org/10.1007/s00122-018-3220-5DOI Listing
November 2018
3 Reads

Organelle DNA contents and starch accumulation in potato tubers.

Theor Appl Genet 2018 Nov 3. Epub 2018 Nov 3.

Fredericton Research and Development Centre, Agriculture and Agri-Food Canada, Fredericton, NB, E3B 4Z7, Canada.

Key Message: Starch contents were found to be positively correlated with organelle/nuclear DNA ratios, suggesting that these ratios are involved in starch accumulation and may serve as a target trait in genetic engineering and a biomarker in breeding for improving the dry matter and starch production in potato. Starch is the main dry matter component of various staple food crops, including potato. Starch synthesis and accumulation is in plastids, uses sugar, consumes cellular energy, and requires active expression of starch synthesis genes. Read More

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http://dx.doi.org/10.1007/s00122-018-3208-1DOI Listing
November 2018

Pid3-I1 is a race-specific partial-resistance allele at the Pid3 blast resistance locus in rice.

Theor Appl Genet 2018 Nov 2. Epub 2018 Nov 2.

Research Faculty of Agriculture, Hokkaido University, Sapporo, 060-8589, Japan.

Key Message: The rice blast resistance QTL detected on chromosome 6 in MC276 is Pid3-I1, one of the multiple alleles at the Pid3 locus. Pid3-I1 shows race-specific partial resistance. Many of the quantitative trait loci (QTLs) for rice blast resistance reported to date remain unidentified. Read More

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http://dx.doi.org/10.1007/s00122-018-3227-yDOI Listing
November 2018

Small ad hoc versus large general training populations for genomewide selection in maize biparental crosses.

Theor Appl Genet 2018 Nov 2. Epub 2018 Nov 2.

Department of Agronomy and Plant Genetics, University of Minnesota, 411 Borlaug Hall, 1991 Upper Buford Circle, Saint Paul, MN, 55108, USA.

Key Message: For genomewide selection in each biparental population, it is better to use a smaller ad hoc training population than a single, large training population. In genomewide selection, different types of training populations can be used for a biparental population made from homozygous parents (A and B). Our objective was to determine whether the response to selection (R) and predictive ability (r) in an A/B population are higher with a large training population that is used for all biparental crosses, or with a smaller ad hoc training population highly related to the A/B population. Read More

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http://dx.doi.org/10.1007/s00122-018-3222-3DOI Listing
November 2018

Correction to: Pm223899, a new recessive powdery mildew resistance gene identified in Afghanistan landrace PI 223899.

Theor Appl Genet 2018 12;131(12):2785

Wheat, Peanut, and Other Field Crops Research Unit, USDA-ARS, Stillwater, OK, 74075, USA.

Unfortunately, the caption of Fig. 2 was incorrectly published in the original publication. The complete correct caption should read as follows. Read More

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http://link.springer.com/10.1007/s00122-018-3226-z
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http://dx.doi.org/10.1007/s00122-018-3226-zDOI Listing
December 2018
5 Reads

Mapping of the male sterile mutant gene ftms in Brassica rapa L. ssp. pekinensis via BSR-Seq combined with whole-genome resequencing.

Theor Appl Genet 2018 Oct 31. Epub 2018 Oct 31.

Liaoning Key Laboratory of Genetics and Breeding for Cruciferous Vegetable Crops, College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, People's Republic of China.

Key Message: A male sterile mutant was created by Co γ-rays of microspores isolated from Chinese cabbage DH line 'FT'. A candidate gene for the male sterile trait was identified as Bra010198. Male sterility is used for hybrid seed production in Chinese cabbage. Read More

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http://link.springer.com/10.1007/s00122-018-3223-2
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http://dx.doi.org/10.1007/s00122-018-3223-2DOI Listing
October 2018
7 Reads

Lessons from natural variations: artificially induced heading date variations for improvement of regional adaptation in rice.

Theor Appl Genet 2018 Oct 31. Epub 2018 Oct 31.

National Key Laboratory of Crop Genetic Improvement and the National Center of Plant Gene Research (Wuhan), Huazhong Agricultural University, Wuhan, 430070, China.

Key Message: New strategy of breeding by modulating key heading date gene Ehd1 to enhance the variations of heading date regardless of genetic background for better adaptation to local environment in rice. Flowering time (or heading date) is an important quantitative trait in rice (Oryza sativa) that determines its adaptation to specific cultivation areas and growing seasons. However, breeding of flowering time is currently relying on laborious selections and combinations of different alleles of various genes. Read More

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http://dx.doi.org/10.1007/s00122-018-3225-0DOI Listing
October 2018

Modeling copy number variation in the genomic prediction of maize hybrids.

Theor Appl Genet 2018 Oct 31. Epub 2018 Oct 31.

Department of Genetics, Luiz de Queiroz College of Agriculture, University of São Paulo (ESALQ/USP), Piracicaba, São Paulo, Brazil.

Key Message: Our study indicates that copy variants may play an essential role in the phenotypic variation of complex traits in maize hybrids. Moreover, predicting hybrid phenotypes by combining additive-dominance effects with copy variants has the potential to be a viable predictive model. Non-additive effects resulting from the actions of multiple loci may influence trait variation in single-cross hybrids. Read More

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http://link.springer.com/10.1007/s00122-018-3215-2
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http://dx.doi.org/10.1007/s00122-018-3215-2DOI Listing
October 2018
1 Read

Identification and mapping of two independent recessive loci for the root hairless mutant phenotype in soybean.

Theor Appl Genet 2018 Oct 31. Epub 2018 Oct 31.

Root Biology Center, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.

Key Message: Two functional complementation QTLs were identified for root hairless formation in soybean. Root hairs play critical roles not only in nutrient/water uptake from soils, but also in plant-microorganism interactions. However, genetic information about root hair development remains fragmented. Read More

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http://dx.doi.org/10.1007/s00122-018-3217-0DOI Listing
October 2018

Transfer of stem rust resistance gene SrB from Thinopyrum ponticum into wheat and development of a closely linked PCR-based marker.

Theor Appl Genet 2018 Oct 30. Epub 2018 Oct 30.

School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, Glen Osmond, SA, 5064, Australia.

Key Message: We report transfer of a rust resistance gene named SrB, on the 6Ae#3 chromosome, to wheat by recombination with the 6Ae#1 segment carrying Sr26 and development of a linked marker. A stem rust resistance gene from a South African wheat W3757, temporarily named SrB, has been transferred onto chromosome 6A. Line W3757 is a 6Ae#3 (6D) substitution line in which the Thinopyrum ponticum chromosomes carry SrB. Read More

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http://link.springer.com/10.1007/s00122-018-3224-1
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http://dx.doi.org/10.1007/s00122-018-3224-1DOI Listing
October 2018
4 Reads

Targeted recombination to increase genetic gain in self-pollinated species.

Theor Appl Genet 2018 Oct 30. Epub 2018 Oct 30.

Department of Agronomy and Plant Genetics, University of Minnesota, 411 Borlaug Hall, 1991 Upper Buford Circle, Saint Paul, MN, 55108, USA.

Key Message: If we can induce or select for recombination at targeted marker intervals, genetic gains for quantitative traits in self-pollinated species may be doubled. Targeted recombination refers to inducing or selecting for a recombination event at genomic positions that maximize genetic gain in a cross. A previous study indicated that targeted recombination could double the rate of genetic gains in maize (Zea mays L. Read More

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http://dx.doi.org/10.1007/s00122-018-3216-1DOI Listing
October 2018

Identification of a gene responsible for cytoplasmic male-sterility in onions (Allium cepa L.) using comparative analysis of mitochondrial genome sequences of two recently diverged cytoplasms.

Theor Appl Genet 2018 Oct 29. Epub 2018 Oct 29.

Department of Plant Biotechnology, Biotechnology Research Institute, Chonnam National University, Gwangju, 500-757, Republic of Korea.

Key Message: Almost identical mitochondrial genome sequences of two recently diverged male-fertile normal and male-sterile CMS-T-like cytoplasms were obtained in onions. A chimeric gene, orf725 , was found to be a CMS-inducing gene. In onions (Allium cepa L. Read More

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http://link.springer.com/10.1007/s00122-018-3218-z
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http://dx.doi.org/10.1007/s00122-018-3218-zDOI Listing
October 2018
2 Reads

Development and molecular cytogenetic identification of a new wheat-rye 4R chromosome disomic addition line with resistances to powdery mildew, stripe rust and sharp eyespot.

Theor Appl Genet 2018 Oct 29. Epub 2018 Oct 29.

Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, China.

Key Message: A wheat-rye 4R chromosome disomic addition line with resistances to powdery mildew, stripe rust, sharp eyespot and high kernel number per spike was developed and characterized by molecular cytogenetic method as novel resistant germplasm. Rye (Secale cereale L.), a close relative of common wheat, is an important and valuable gene donor with multiple disease resistance for wheat improvement. Read More

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http://link.springer.com/10.1007/s00122-018-3214-3
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http://dx.doi.org/10.1007/s00122-018-3214-3DOI Listing
October 2018
6 Reads

Crop resistant starch and genetic improvement: a review of recent advances.

Theor Appl Genet 2018 Dec 29;131(12):2495-2511. Epub 2018 Oct 29.

Laboratory of Molecular Genetics and Proteomics, College of Life Science, Capital Normal University, 100048, Beijing, China.

Resistant starch (RS), as a healthy dietary fiber, meets with great human favor along with the rapid development and improvement of global living standards. RS shows direct effects in reducing postprandial blood glucose levels, serum cholesterol levels and glycemic index. Therefore, RS plays an important role in preventing and improving non-communicable diseases, such as obesity, diabetes, colon cancer, cardiovascular diseases and chronic kidney disease. Read More

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http://link.springer.com/10.1007/s00122-018-3221-4
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http://dx.doi.org/10.1007/s00122-018-3221-4DOI Listing
December 2018
5 Reads