9,657 results match your criteria TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik[Journal]


A single-base change at a splice site in Wx-A1 caused incorrect RNA splicing and gene inactivation in a wheat EMS mutant line.

Theor Appl Genet 2019 Apr 16. Epub 2019 Apr 16.

Triticeae Research Institute, Sichuan Agricultural University, Chengdu, 611130, Sichuan, China.

Key Message: An EMS-induced single-base mutation at a splice site caused abnormal RNA splicing and resulted in the gene inactivation and the lack of Wx-A1 protein in a wheat EMS mutant line. An EMS-mutagenized population was generated using common wheat cv. SM126 consisting of 10,600 M2 plants. Read More

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http://dx.doi.org/10.1007/s00122-019-03340-1DOI Listing
April 2019
1 Read

Testing multiplicative terms in AMMI and GGE models for multienvironment trials with replicates.

Theor Appl Genet 2019 Apr 15. Epub 2019 Apr 15.

Biostatistics Unit, Institute of Crop Science, University of Hohenheim, Fruwirthstrasse 23, 70599, Stuttgart, Germany.

Key Message: For analysing multienvironment trials with replicates, a resampling-based method is proposed for testing significance of multiplicative interaction terms in AMMI and GGE models, which is superior compared to contending methods in robustness to heterogeneity of variance. The additive main effects and multiplicative interaction model and genotype main effects and genotype-by-environment interaction model are commonly used for the analysis of multienvironment trial data. Agronomists and plant breeders are frequently using these models for cultivar trials repeated across different environments and/or years. Read More

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http://dx.doi.org/10.1007/s00122-019-03339-8DOI Listing

Dissection of the genetic variation and candidate genes of lint percentage by a genome-wide association study in upland cotton.

Theor Appl Genet 2019 Apr 13. Epub 2019 Apr 13.

State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, 455000, China.

Key Message: A genome-wide associated study identified six novel QTLs for lint percentage. Two candidate genes underlying this trait were also detected. Increasing lint percentage (LP) is a core goal of cotton breeding. Read More

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http://dx.doi.org/10.1007/s00122-019-03333-0DOI Listing
April 2019
2 Reads

CRISPR/Cas9-mediated genome editing reveals differences in the contribution of INDEHISCENT homologues to pod shatter resistance in Brassica napus L.

Theor Appl Genet 2019 Apr 12. Epub 2019 Apr 12.

National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070, China.

The INDEHISCENT (IND) and ALCATRAZ (ALC) gene homologues have been reported to be essential for dehiscence of fruits in Brassica species. But their functions for pod shatter resistance in Brassica napus, an important oil crops, are not well understood. Here, we assessed the functions of these two genes in rapeseed using CRISPR/Cas9 technology. Read More

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http://dx.doi.org/10.1007/s00122-019-03341-0DOI Listing

Fine-mapping of angular leaf spot resistance gene Phg-2 in common bean and development of molecular breeding tools.

Theor Appl Genet 2019 Apr 11. Epub 2019 Apr 11.

Centro Internacional de Agricultura Tropical (CIAT), Bean Program, Palmira, Colombia.

Key Message: The Common Bean Angular Leaf Spot Resistance Gene Phg-2 was fine-mapped to a 409-Kbp region, and molecular markers for breeders were developed and validated in field experiments. Common bean (Phaseolus vulgaris L.) is an important food legume in Latin America, Asia and Africa. Read More

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http://link.springer.com/10.1007/s00122-019-03334-z
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http://dx.doi.org/10.1007/s00122-019-03334-zDOI Listing
April 2019
1 Read

Combining pedigree and genomic information to improve prediction quality: an example in sorghum.

Theor Appl Genet 2019 Apr 9. Epub 2019 Apr 9.

Biometris, Wageningen University and Research, 6700AA, Wageningen, The Netherlands.

Key Message: The use of a kinship matrix integrating pedigree- and marker-based relationships optimized the performance of genomic prediction in sorghum, especially for traits of lower heritability. Selection based on genome-wide markers has become an active breeding strategy in crops. Genomic prediction models can make use of pedigree information to account for the residual polygenic effects not captured by markers. Read More

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http://dx.doi.org/10.1007/s00122-019-03337-wDOI Listing

Fine mapping and molecular characterization of the virescent gene vsp in Upland cotton (Gossypium hirsutum).

Theor Appl Genet 2019 Apr 5. Epub 2019 Apr 5.

State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China.

Key Message: The vsp gene was fine mapped to a 353.7-kb region, and a 201-bp deletion that affected chloroplast development and chlorophyll biosynthesis was found in the candidate gene GhPUR4. Virescent mutations can be used as marker traits in heterosis breeding and can also be used to research chloroplast development, chlorophyll biosynthesis and photosynthesis mechanisms. Read More

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http://dx.doi.org/10.1007/s00122-019-03338-9DOI Listing
April 2019
3 Reads

Fine-mapping of the Fusarium head blight resistance QTL Qfhs.ifa-5A identifies two resistance QTL associated with anther extrusion.

Theor Appl Genet 2019 Apr 4. Epub 2019 Apr 4.

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: Fine-mapping separated Qfhs.ifa-5A into a major QTL mapping across the centromere and a minor effect QTL positioned at the distal half of 5AS. Both increase Fusarium resistance and anther extrusion. Read More

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http://dx.doi.org/10.1007/s00122-019-03336-xDOI Listing

Genome-wide mapping of adult plant stripe rust resistance in wheat cultivar Toni.

Theor Appl Genet 2019 Apr 2. Epub 2019 Apr 2.

State Key Laboratory of Crop Stress Biology in Arid Areas and College of Plant Protection, Northwest A&F University, Yangling, 712100, Shaanxi, China.

Key Message: Two adult plant stripe rust resistance QTL, QYrto.swust-3AS and QYrto.swust-3BS, were identified and mapped in common wheat cultivar Toni. Read More

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http://dx.doi.org/10.1007/s00122-019-03308-1DOI Listing
April 2019
2 Reads

Fine mapping and identification of the fuzzless gene GaFzl in DPL972 (Gossypium arboreum).

Theor Appl Genet 2019 Apr 2. Epub 2019 Apr 2.

State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China.

Key Message: The fuzzless gene GaFzl was fine mapped to a 70-kb region containing a GIR1 gene, Cotton_A_11941, responsible for the fuzzless trait in Gossypium arboreum DPL972. Cotton fiber is the most important natural textile resource. The fuzzless mutant DPL972 (Gossypium arboreum) provides a useful germplasm resource to explore the molecular mechanism underlying fiber and fuzz initiation and development. Read More

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http://dx.doi.org/10.1007/s00122-019-03330-3DOI Listing
April 2019
2 Reads

Drought and heat stress-related proteins: an update about their functional relevance in imparting stress tolerance in agricultural crops.

Theor Appl Genet 2019 Apr 2. Epub 2019 Apr 2.

Department of Botany, Panjab University, Chandigarh, India.

Key Message: We describe here the recent developments about the involvement of diverse stress-related proteins in sensing, signaling, and defending the cells in plants in response to drought or/and heat stress. In the current era of global climate drift, plant growth and productivity are often limited by various environmental stresses, especially drought and heat. Adaptation to abiotic stress is a multigenic process involving maintenance of homeostasis for proper survival under adverse environment. Read More

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http://link.springer.com/10.1007/s00122-019-03331-2
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http://dx.doi.org/10.1007/s00122-019-03331-2DOI Listing
April 2019
3 Reads

CLAVATA signaling pathway genes modulating flowering time and flower number in chickpea.

Theor Appl Genet 2019 Mar 30. Epub 2019 Mar 30.

National Institute of Plant Genome Research (NIPGR), Aruna Asaf Ali Marg, New Delhi, 110067, India.

Key Message: A combinatorial genomic strategy delineated functionally relevant natural allele of a CLAVATA gene and its marker (haplotype)-assisted introgression led to development of the early-flowering chickpea cultivars with high flower number and enhanced yield/productivity. Unraveling the genetic components involved in CLAVATA (CLV) signaling is crucial for modulating important shoot apical meristem (SAM) characteristics and ultimately regulating diverse SAM-regulated agromorphological traits in crop plants. A genome-wide scan identified 142 CLV1-, 28 CLV2- and 6 CLV3-like genes, and their comprehensive genomic constitution and phylogenetic relationships were deciphered in chickpea. Read More

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http://dx.doi.org/10.1007/s00122-019-03335-yDOI Listing

Dissection of two quantitative trait loci with pleiotropic effects on plant height and spike length linked in coupling phase on the short arm of chromosome 2D of common wheat (Triticum aestivum L.).

Theor Appl Genet 2019 Mar 26. Epub 2019 Mar 26.

State Key Laboratory for Agrobiotechnology/Key Laboratory of Crop Heterosis and Utilization, the Ministry of Education/Key Laboratory of Crop Genetic Improvement, Beijing Municipality, China Agricultural University, Beijing, 100193, China.

Key Message: Two QTL with pleiotropic effects on plant height and spike length linked in coupling phase on chromosome 2DS were dissected, and diagnostic marker for each QTL was developed. Plant height (PHT) is a crucial trait related to plant architecture and yield potential, and dissection of its underlying genetic basis would help to improve the efficiency of designed breeding in wheat. Here, two quantitative trait loci (QTL) linked in coupling phase on the short arm of chromosome 2D with pleiotropic effects on PHT and spike length, QPht/Sl. Read More

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http://dx.doi.org/10.1007/s00122-019-03318-zDOI Listing
March 2019
3.790 Impact Factor

Introgression of the chromosomal region with the Pi-cd locus from Oryza meridionalis into O. sativa L. during rice domestication.

Theor Appl Genet 2019 Mar 26. Epub 2019 Mar 26.

Hokkaido Agricultural Research Center, National Agricultural Research Organization, Sapporo, 062-8555, Japan.

Key Message: The genotype of the Pi-cd locus found in blast-resistant rice variety Kitakurin, which is a cultivated rice from Japan belonging to Oryza sativa japonica, is identical to that of its wild relative O. meridionalis. Crop domestication from wild relatives to cultivated species has encompassed significant phenotypic changes. Read More

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http://dx.doi.org/10.1007/s00122-019-03332-1DOI Listing

Effects of Rht-B1 and Ppd-D1 loci on pollinator traits in wheat.

Theor Appl Genet 2019 Mar 21. Epub 2019 Mar 21.

School of Agriculture, Food and Wine, Plant Genomics Centre, University of Adelaide, Hartley Grove, Urrbrae, SA, 5064, Australia.

Key Message: Elite wheat pollinators are critical for successful hybrid breeding. We identified Rht-B1 and Ppd-D1 loci affecting multiple pollinator traits and therefore represent major targets for improving hybrid seed production. Hybrid breeding has a great potential to significantly boost wheat yields. Read More

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http://dx.doi.org/10.1007/s00122-019-03329-wDOI Listing

Mapping of barley susceptibility/resistance QTL against spot form net blotch caused by Pyrenophora teres f. maculata using RIL populations.

Theor Appl Genet 2019 Mar 20. Epub 2019 Mar 20.

Department of Plant Pathology, North Dakota State University, Fargo, ND, 58108-6050, USA.

Spot form net blotch (SFNB) caused by the necrotrophic fungal pathogen Pyrenophora teres f. maculata (Ptm) is an important disease of barley worldwide including the major barley production regions of North America. To characterize SFNB resistance/susceptibility quantitative trait loci (QTL), three recombinant inbred line (RIL) populations were developed from crosses between the malting barley cultivars, Tradition (six row) and Pinnacle (two row), and the two world barley core collection lines, PI67381 and PI84314. Read More

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http://dx.doi.org/10.1007/s00122-019-03328-xDOI Listing

The effects of training population design on genomic prediction accuracy in wheat.

Theor Appl Genet 2019 Mar 19. Epub 2019 Mar 19.

The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian, Scotland, UK.

Genomic selection offers several routes for increasing the genetic gain or efficiency of plant breeding programmes. In various species of livestock, there is empirical evidence of increased rates of genetic gain from the use of genomic selection to target different aspects of the breeder's equation. Accurate predictions of genomic breeding value are central to this, and the design of training sets is in turn central to achieving sufficient levels of accuracy. Read More

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http://dx.doi.org/10.1007/s00122-019-03327-yDOI Listing

Technological perspectives for plant breeding.

Theor Appl Genet 2019 Mar 19;132(3):555-557. Epub 2019 Mar 19.

Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, QLD, 4072, Australia.

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http://dx.doi.org/10.1007/s00122-019-03321-4DOI Listing

Assessment of the effect of ten heading time genes on reproductive transition and yield components in rice using a CRISPR/Cas9 system.

Theor Appl Genet 2019 Mar 19. Epub 2019 Mar 19.

Rice Research Institute of Shenyang Agricultural University, Shenyang, 110866, China.

Key Message: We demonstrated the effect of heading time genes on reproductive transition and yield components under an identical genetic background using CRISPR/Cas9 gene-editing technology, and we propose that the elite allele will provide a new breeding strategy for rice breeding in high-latitude regions. Heading date is a factor closely associated with grain yield in rice (Oryza sativa L). In recent decades, a number of genes responsible for heading time have been identified, the variation of which contributes to the expansion of the rice cultivation area. Read More

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http://dx.doi.org/10.1007/s00122-019-03324-1DOI Listing

QTL mapping for maize starch content and candidate gene prediction combined with co-expression network analysis.

Theor Appl Genet 2019 Mar 19. Epub 2019 Mar 19.

Provincial Key Laboratory of Agrobiology, Institute of Crop Germplasm and Biotechnology, Jiangsu Academy of Agricultural Sciences, Nanjing, China.

Key Message: A major QTL Qsta9.1 was identified on chromosome 9, combined with GWAS, and co-expression network analysis showed that GRMZM2G110929 and GRMZM5G852704 are the potential candidates for association with maize kernel starch content. Increasing maize kernel starch content may not only lead to higher maize kernel yields and qualities, but also help meet industry demands. Read More

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http://dx.doi.org/10.1007/s00122-019-03326-zDOI Listing
March 2019
1 Read

Evaluation of the genetic architecture and the potential of genomics-assisted breeding of quality traits in two large panels of durum wheat.

Theor Appl Genet 2019 Mar 18. Epub 2019 Mar 18.

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

Key Message: New QTL for important quality traits in durum were identified, but for most QTL their effect varies depending on the investigated germplasm. Most of the global durum wheat (Triticum turgidum ssp. durum) production is used for human consumption via pasta and to a lower extent couscous and bulgur. Read More

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http://dx.doi.org/10.1007/s00122-019-03323-2DOI Listing
March 2019
1 Read

Genome-wide SNP discovery for development of high-density genetic map and QTL mapping of ascochyta blight resistance in chickpea (Cicer arietinum L.).

Theor Appl Genet 2019 Mar 16. Epub 2019 Mar 16.

Department of Plant Sciences, College of Agriculture and Bioresources, University of Saskatchewan, Saskatoon, Canada.

Key Message: A high-density linkage map of chickpea using 3430 SNPs was constructed and used to identify QTLs and candidate genes for ascochyta blight resistance in chickpea. Chickpea cultivation in temperate conditions is highly vulnerable to ascochyta blight infection. Cultivation of resistant cultivars in combination with fungicide application within an informed disease management package is the most effective method to control ascochyta blight in chickpeas. Read More

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http://dx.doi.org/10.1007/s00122-019-03322-3DOI Listing
March 2019
1 Read

Testcross performance of doubled haploid lines from European flint maize landraces is promising for broadening the genetic base of elite germplasm.

Theor Appl Genet 2019 Mar 15. Epub 2019 Mar 15.

Institute of Plant Breeding, Seed Sciences and Population Genetics, University of Hohenheim, Fruwirthstraße 21, 70599, Stuttgart, Germany.

Key Message: Selected doubled haploid lines averaged similar testcross performance as their original landraces, and the best of them approached the yields of elite inbreds, demonstrating their potential to broaden the narrow genetic diversity of the flint germplasm pool. Maize landraces represent a rich source of genetic diversity that remains largely idle because the high genetic load and performance gap to elite germplasm hamper their use in modern breeding programs. Production of doubled haploid (DH) lines can mitigate problems associated with the use of landraces in pre-breeding. Read More

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http://dx.doi.org/10.1007/s00122-019-03325-0DOI Listing
March 2019
1 Read

Genetic diversity and parentage analysis of grape rootstocks.

Theor Appl Genet 2019 Mar 8. Epub 2019 Mar 8.

Department of Viticulture and Enology, University of California, Davis, CA, 95616, USA.

Key Message: The maternal and paternal parentage of 36 rootstocks was determined and verified. The results of this study indicate that existing grape rootstocks are closely related to each other and have a narrow genetic background. Rootstocks are used to protect grapevines from biotic and abiotic stresses including phylloxera, nematodes, viruses, limestone-based soils, salinity and drought. Read More

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http://dx.doi.org/10.1007/s00122-019-03320-5DOI Listing

Stable and novel QTL identification and new insights into the genetic networks affecting seed fiber traits in Brassica napus.

Theor Appl Genet 2019 Mar 4. Epub 2019 Mar 4.

Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China.

Key Message: QTL mapping for fiber-related traits and elucidation of a stable and novel QTL affecting seed lignin content, cellulose content and seed oil content. Dissection of the genetic networks for fiber biosynthesis is important for improving the seed oil content and meal value of Brassica napus. In this study, the genetic basis of seed fiber biosynthesis in B. Read More

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http://link.springer.com/10.1007/s00122-019-03313-4
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http://dx.doi.org/10.1007/s00122-019-03313-4DOI Listing
March 2019
8 Reads

Genetic mapping of powdery mildew resistance genes in soybean by high-throughput genome-wide sequencing.

Theor Appl Genet 2019 Mar 2. Epub 2019 Mar 2.

The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou, 510642, Guangdong, People's Republic of China.

Key Message: The Mendelian locus conferring resistance to powdery mildew in soybean was precisely mapped using a combination of phenotypic screening, genetic analyses, and high-throughput genome-wide sequencing. Powdery mildew (PMD), caused by the fungus Microsphaera diffusa Cooke & Peck, leads to considerable yield losses in soybean [Glycine max (L.) Merr. Read More

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http://dx.doi.org/10.1007/s00122-019-03319-yDOI Listing
March 2019
1 Read

Molecular characterization of a novel TaGL3-5A allele and its association with grain length in wheat (Triticum aestivum L.).

Theor Appl Genet 2019 Mar 1. Epub 2019 Mar 1.

National Laboratory of Wheat Engineering, Key Laboratory of Wheat Biology and Genetic Breeding in Central Huang-Huai Region, Ministry of Agriculture, Institute of Wheat, Henan Academy of Agricultural Sciences, Zhengzhou, 450002, Henan, China.

Key Message: We isolated a novel allele associated with grain length and grain weight in wheat, TaGL3-5A-G. The TaGL3-5A-G allele frequency is low in wheat, so it has potential for breeding. Selection of large-grain wheat showing big grain sink potential and strong sink activity is becoming an important objective in breeding programs. Read More

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http://link.springer.com/10.1007/s00122-019-03316-1
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http://dx.doi.org/10.1007/s00122-019-03316-1DOI Listing
March 2019
12 Reads

Enhancing the rate of genetic gain in public-sector plant breeding programs: lessons from the breeder's equation.

Theor Appl Genet 2019 Mar 1;132(3):627-645. Epub 2019 Mar 1.

CGIAR Excellence in Breeding Platform (EiB), El Batan, Mexico.

Key Message: The integration of new technologies into public plant breeding programs can make a powerful step change in agricultural productivity when aligned with principles of quantitative and Mendelian genetics. The breeder's equation is the foundational application of quantitative genetics to crop improvement. Guided by the variables that describe response to selection, emerging breeding technologies can make a powerful step change in the effectiveness of public breeding programs. Read More

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http://dx.doi.org/10.1007/s00122-019-03317-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6439161PMC
March 2019
1 Read

Bulked segregant RNA-sequencing (BSR-seq) identified a novel rare allele of eIF4E effective against multiple isolates of BaYMV/BaMMV.

Theor Appl Genet 2019 Feb 27. Epub 2019 Feb 27.

Institute of Crop Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing, 100081, China.

Key Message: A novel rare allele of the barley host factor gene eIF4E for BaMMV/BaYMV infection was identified in an Iranian landrace that showed broad resistance to barley yellow mosaic virus disease, and molecular markers facilitating efficient selection were developed. The soil-borne yellow mosaic virus disease caused by different strains of barley yellow mosaic virus (BaYMV) and barley mild mosaic virus (BaMMV) is a major threat to winter barley (Hordeum vulgare) production in Europe and East Asia. However, the exploration of resistant germplasm or casual genes for barley breeding is rather limited in relation to the rapid diversification of viral strains. Read More

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http://link.springer.com/10.1007/s00122-019-03314-3
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http://dx.doi.org/10.1007/s00122-019-03314-3DOI Listing
February 2019
9 Reads
3.790 Impact Factor

Simultaneous selection for grain yield and protein content in genomics-assisted wheat breeding.

Theor Appl Genet 2019 Feb 27. Epub 2019 Feb 27.

Department of Agrobiotechnology, IFA-Tulln, University of Natural Resources and Life Sciences Vienna, Konrad-Lorenz-Str. 20, 3430, Tulln, Austria.

Key Message: Large genetic improvement can be achieved by simultaneous genomic selection for grain yield and protein content when combining different breeding strategies in the form of selection indices. Genomic selection has been implemented in many national and international breeding programmes in recent years. Numerous studies have shown the potential of this new breeding tool; few have, however, taken the simultaneous selection for multiple traits into account that is though common practice in breeding programmes. Read More

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http://dx.doi.org/10.1007/s00122-019-03312-5DOI Listing
February 2019
1 Read

HL2 on chromosome 7D of wheat (Triticum aestivum L.) regulates both head length and spikelet number.

Theor Appl Genet 2019 Feb 27. Epub 2019 Feb 27.

The Applied Plant Genomics Laboratory, Crop Genomics and Bioinformatics Center, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China.

Key Message: A major QTL QSpl.nau-7D, named HL2, was validated for its effects on head length and kernel number per spike using NIL, and mapped to a 0.2 cM interval using recombinants. Read More

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http://dx.doi.org/10.1007/s00122-019-03315-2DOI Listing
February 2019
3.790 Impact Factor

Genome-wide association study of seed protein, oil and amino acid contents in soybean from maturity groups I to IV.

Theor Appl Genet 2019 Feb 26. Epub 2019 Feb 26.

Department of Crop and Soil Sciences, North Carolina State University, Raleigh, NC, 27695, USA.

Key Message: Genomic regions associated with seed protein, oil and amino acid contents were identified by genome-wide association analyses. Geographic distributions of haplotypes indicate scope of improvement of these traits. Soybean [Glycine max (L. Read More

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http://dx.doi.org/10.1007/s00122-019-03304-5DOI Listing
February 2019

Technological advances in maize breeding: past, present and future.

Theor Appl Genet 2019 Mar 23;132(3):817-849. Epub 2019 Feb 23.

Department of Agronomy, Iowa State University, Agronomy Hall, Ames, IA, 50011-1010, USA.

Maize has for many decades been both one of the most important crops worldwide and one of the primary genetic model organisms. More recently, maize breeding has been impacted by rapid technological advances in sequencing and genotyping technology, transformation including genome editing, doubled haploid technology, parallelled by progress in data sciences and the development of novel breeding approaches utilizing genomic information. Herein, we report on past, current and future developments relevant for maize breeding with regard to (1) genome analysis, (2) germplasm diversity characterization and utilization, (3) manipulation of genetic diversity by transformation and genome editing, (4) inbred line development and hybrid seed production, (5) understanding and prediction of hybrid performance, (6) breeding methodology and (7) synthesis of opportunities and challenges for future maize breeding. Read More

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http://dx.doi.org/10.1007/s00122-019-03306-3DOI Listing
March 2019
1 Read

QTL analysis of durable stripe rust resistance in the North American winter wheat cultivar Skiles.

Theor Appl Genet 2019 Feb 22. Epub 2019 Feb 22.

Department of Plant Pathology, Washington State University, Pullman, WA, 99164-6430, USA.

Key Message: This study determined the effects of growth stage and temperature on expression of high-temperature adult-plant resistance to stripe rust, mapped six QTL for durable resistance in winter wheat Skiles using a doubled haploid population, and selected breeding lines with different combinations of the QTL using marker-assisted selection. The winter wheat cultivar Skiles has a high level of high-temperature adult-plant (HTAP) resistance to stripe rust caused by Puccinia striiformis f. sp. Read More

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http://dx.doi.org/10.1007/s00122-019-03307-2DOI Listing
February 2019
1 Read

A reference high-density genetic map of greater yam (Dioscorea alata L.).

Theor Appl Genet 2019 Feb 20. Epub 2019 Feb 20.

CIRAD, UMR AGAP, 97170, Petit-Bourg, Guadeloupe, France.

Key Message: This study generated the first high-density genetic map for D. alata based on genotyping-by-sequencing and provides new insight on sex determination in yam. Greater yam (Dioscorea alata L. Read More

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http://dx.doi.org/10.1007/s00122-019-03311-6DOI Listing
February 2019
1 Read

The transcription factor OsbHLH138 regulates thermosensitive genic male sterility in rice via activation of TMS5.

Theor Appl Genet 2019 Feb 18. Epub 2019 Feb 18.

State Key Laboratory of Hybrid Rice, Key Laboratory for Research and Utilization of Heterosis in Indica Rice of Ministry of Agriculture, Engineering Research Center for Plant Biotechnology and Germplasm Utilization of Ministry of Education, College of Life Science, Wuhan University, Wuhan, 430072, China.

Thermosensitive genic male sterile (TGMS) lines favored heterosis exploitation in two-line hybrid rice. TMS5, a member of RNase Z cleavages the Ub mRNAs, plays an important role in two-line hybrid rice. Here, we identified a new TGMS mutant 93-11s, which lost two amino acids in the first exon of TMS5 gene and caused thermosensitive genic male sterility in rice. Read More

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http://link.springer.com/10.1007/s00122-019-03310-7
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http://dx.doi.org/10.1007/s00122-019-03310-7DOI Listing
February 2019
5 Reads

High-throughput phenotyping platforms enhance genomic selection for wheat grain yield across populations and cycles in early stage.

Theor Appl Genet 2019 Feb 18. Epub 2019 Feb 18.

Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY, 14853, USA.

Genomic selection (GS) models have been validated for many quantitative traits in wheat (Triticum aestivum L.) breeding. However, those models are mostly constrained within the same growing cycle and the extension of GS to the case of across cycles has been a challenge, mainly due to the low predictive accuracy resulting from two factors: reduced genetic relationships between different families and augmented environmental variances between cycles. Read More

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http://dx.doi.org/10.1007/s00122-019-03309-0DOI Listing
February 2019

Development and validation of an exome-based SNP marker set for identification of the St, J and J genomes of Thinopyrym intermedium in a wheat background.

Theor Appl Genet 2019 May 14;132(5):1555-1570. Epub 2019 Feb 14.

Nottingham BBSRC Wheat Research Centre, Division of Plant and Crop Sciences, School of Biosciences, The University of Nottingham, Sutton Bonington Campus, Loughborough, UK.

Key Message: Cytogenetic analysis and array-based SNP genotyping of wheat- Th. intermedium introgression lines allowed identification of 634 chromosome-specific SNP markers across all twenty-one chromosomes of Th. intermedium (StJ J , 2 n  = 6 x  = 42). Read More

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http://dx.doi.org/10.1007/s00122-019-03300-9DOI Listing

Genetic insights into morphometric inflorescence traits of wheat.

Theor Appl Genet 2019 Feb 14. Epub 2019 Feb 14.

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

Key Message: Modifying morphometric inflorescence traits is important for increasing grain yield in wheat. Mapping revealed nine QTL, including new QTL and a new allele for the q locus, controlling wheat spike morphometric traits. To identify loci controlling spike morphometric traits, namely spike length (SL), internode length (IL), node number per spike (NPS), and node density (ND), we studied 146 Recombinant Inbred Lines of tetraploid wheat (Triticum turgidum L. Read More

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http://dx.doi.org/10.1007/s00122-019-03305-4DOI Listing
February 2019
1 Read

Advances in understanding salt tolerance in rice.

Theor Appl Genet 2019 Apr 13;132(4):851-870. Epub 2019 Feb 13.

ICAR-National Bureau of Plant Genetic Resources, IARI Campus, Pusa, New Delhi, 110012, India.

Key Message: This review presents a comprehensive overview of the recent research on rice salt tolerance in the areas of genomics, proteomics, metabolomics and chemical genomics. Salinity is one of the major constraints in rice cultivation globally. Traditionally, rice is a glycophyte except for a few genotypes that have been widely used in salinity tolerance breeding of rice. Read More

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http://link.springer.com/10.1007/s00122-019-03301-8
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http://dx.doi.org/10.1007/s00122-019-03301-8DOI Listing
April 2019
6 Reads
3.790 Impact Factor

Rare maternal and biparental transmission of the cucumber mitochondrial DNA reveals sorting of polymorphisms among progenies.

Theor Appl Genet 2019 Apr 13;132(4):1223-1233. Epub 2019 Feb 13.

USDA-ARS and Department of Horticulture, University of Wisconsin, Madison, WI, 53706, USA.

Key Message: We used a mitochondrial (mt) mutant of cucumber to document rare maternal transmission of mt polymorphisms and demonstrate that polymorphisms can become more prevalent and sort to progenies to increase mt DNA diversity. The mitochondrial (mt) DNAs of most angiosperms show maternal inheritance, although relatively rare biparental or paternal transmission has been documented. The mt DNAs of plants in the genus Cucumis (family Cucurbitaceae) are paternally transmitted in intra- and interspecific crosses. Read More

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http://dx.doi.org/10.1007/s00122-018-03274-0DOI Listing

Ty-6, a major begomovirus resistance gene on chromosome 10, is effective against Tomato yellow leaf curl virus and Tomato mottle virus.

Theor Appl Genet 2019 May 13;132(5):1543-1554. Epub 2019 Feb 13.

Gulf Coast Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, 14625 CR 672, Wimauma, FL, 33598-6101, USA.

Key Message: Ty-6 is a major resistance gene on chromosome 10 of tomato that provides resistance against monopartite and bipartite begomoviruses and complements resistance conferred by the known Ty-3 and ty-5 genes. Resistance to monopartite and bipartite begomoviruses is an important breeding objective for cultivated tomato. Several begomovirus resistance genes have been introgressed from related Solanum species and are available for breeding purposes. Read More

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http://dx.doi.org/10.1007/s00122-019-03298-0DOI Listing

High-density linkage maps and loci for berry color and flower sex in muscadine grape (Vitis rotundifolia).

Theor Appl Genet 2019 May 12;132(5):1571-1585. Epub 2019 Feb 12.

Department of Horticulture, University of Georgia, 4604 Research Way, Tifton, GA, 31793, USA.

Key Message: Linkage maps of muscadine grape generated using genotyping-by-sequencing (GBS) provide insight into genome collinearity between Muscadinia and Euvitis subgenera and genetic control of flower sex and berry color. The muscadine grape, Vitis rotundifolia, is a specialty crop native to the southeastern USA. Muscadine vines can be male, female, or perfect-flowered, and berry color ranges from bronze to black. Read More

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http://dx.doi.org/10.1007/s00122-019-03302-7DOI Listing
May 2019
1 Read

Contribution of recent technological advances to future resistance breeding.

Theor Appl Genet 2019 Mar 12;132(3):713-732. Epub 2019 Feb 12.

Department of Plant and Microbial Biology, University of Zürich, Zollikerstrasse 107, 8008, Zurich, Switzerland.

The development of durable host resistance strategies to control crop diseases is a primary need for sustainable agricultural production in the future. This article highlights the potential of recent progress in the understanding of host resistance for future cereal breeding. Much of the novel work is based on advancements in large-scale sequencing and genomics, rapid gene isolation techniques and high-throughput molecular marker technologies. Read More

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http://dx.doi.org/10.1007/s00122-019-03297-1DOI Listing

A robust Bayesian genome-based median regression model.

Theor Appl Genet 2019 May 12;132(5):1587-1606. Epub 2019 Feb 12.

Biometrics and Statistics Unit and Global Wheat Program, International Maize and Wheat Improvement Center (CIMMYT), Apdo. Postal 6-641, 06600, Mexico, DF, Mexico.

Key Message: Current genome-enabled prediction models assumed errors normally distributed, which are sensitive to outliers. We propose a model with errors assumed to follow a Laplace distribution to deal better with outliers. Current genome-enabled prediction models use regressions that fit the expected value (mean) of a response variable with errors assumed normally distributed, which are often sensitive to outliers, either genetic or environmental. Read More

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http://dx.doi.org/10.1007/s00122-019-03303-6DOI Listing

A novel variant of Gh_D02G0276 is required for root-knot nematode resistance on chromosome 14 (D02) in Upland cotton.

Theor Appl Genet 2019 May 11;132(5):1425-1434. Epub 2019 Feb 11.

Crop Science Research Laboratory, Genetics and Precision Agriculture Research Unit, USDA-ARS, 150 Twelve Lane, Mississippi State, MS, 39762, USA.

Key Message: MAGIC population sequencing and virus-induced gene silencing identify Gh_D02G0276 as a novel root-knot nematode resistance gene on chromosome 14 in Upland cotton. The southern root-knot nematode [RKN; Meloidogyne incognita (Kofoid & White)] remains the primary yield-limiting biotic stress to Upland cotton (Gossypium hirsutum L.) throughout the southeastern USA. Read More

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http://dx.doi.org/10.1007/s00122-019-03289-1DOI Listing

Broadening the bread wheat D genome.

Theor Appl Genet 2019 May 10;132(5):1295-1307. Epub 2019 Feb 10.

Department of Plant Breeding, Justus Liebig University, IFZ Research Centre for Biosystems, Land Use and Nutrition, Heinrich-Buff-Ring 26-32, Giessen, 35392, Germany.

Key Message: Although Ae. tauschii has been extensively utilised for wheat breeding, the D-genome-containing allopolyploids have largely remained unexploited. In this review, we discuss approaches that can be used to exploit the D genomes of the different Aegilops species for the improvement of bread wheat. Read More

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http://dx.doi.org/10.1007/s00122-019-03299-zDOI Listing
May 2019
3 Reads

QTL mapping of resistance to bacterial fruit blotch in Citrullus amarus.

Theor Appl Genet 2019 May 9;132(5):1463-1471. Epub 2019 Feb 9.

US Vegetable Laboratory, USDA, ARS, 2700 Savannah Highway, Charleston, SC, 29414, USA.

Key Message: Six QTLs were associated with affected leaf area in response to inoculation with Acidovorax citrulli in a recombinant inbred line population of Citrullus amarus. Acidovorax citrulli, the causal agent of bacterial fruit blotch (BFB) of cucurbits, has the potential to devastate production of watermelon and other cucurbits. Despite decades of research on host-plant resistance to A. Read More

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http://dx.doi.org/10.1007/s00122-019-03292-6DOI Listing
May 2019
1 Read

The distribution pattern of endopolyploidy in maize.

Theor Appl Genet 2019 May 7;132(5):1487-1503. Epub 2019 Feb 7.

The Key Laboratory of Biology and Genetics Improvement of Maize in Arid Area of Northwest Region, Ministry of Agriculture, College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China.

Key Message: We discovered that endopolyploidization is common in various organs and tissues of maize at different development stages. Endopolyploidy is not specific in maize germplasm populations. Endopolyploidy is caused by DNA endoreplication, a special type of mitosis with normal DNA synthesis and a lack of cell division; it is a common phenomenon and plays an important role in plant development. Read More

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http://link.springer.com/10.1007/s00122-019-03294-4
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http://dx.doi.org/10.1007/s00122-019-03294-4DOI Listing
May 2019
13 Reads

Quantitative trait loci mapping in hybrids between Dent and Flint maize multiparental populations reveals group-specific QTL for silage quality traits with variable pleiotropic effects on yield.

Theor Appl Genet 2019 May 7;132(5):1523-1542. Epub 2019 Feb 7.

UMR 0320, Quantitative Genetics and Evolution (GQE) - Le Moulon, INRA, Université Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, 91190, Gif-Sur-Yvette, France.

Key Message: Silage quality traits of maize hybrids between the Dent and Flint heterotic groups mostly involved QTL specific of each parental group, some of them showing unfavorable pleiotropic effects on yield. Maize (Zea mays L.) is commonly used as silage for cattle feeding in Northern Europe. Read More

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http://dx.doi.org/10.1007/s00122-019-03296-2DOI Listing
May 2019
1 Read