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Microsatellite markers for the -derived leaf rust resistance gene on wheat 5BL chromosome.

Authors:
Ali Aliakbari Sadeghabad Ali Dadkhodaie Bahram Heidari Hooman Razi Reza Mostowfizadeh-Ghalamfarsa

Breed Sci 2017 Mar 4;67(2):129-134. Epub 2017 Mar 4.

Department of Plant Protection, School of Agriculture, Shiraz University, Shiraz, Iran.

Leaf rust, caused by , is a common wheat disease worldwide. Developing resistant cultivars through deploying new or pyramiding resistance genes in a suitable line, is the most effective approach to control this disease. However, to stack genes in a genotype, efficient and reliable markers are required. In the present study, F plants and their corresponding F families from a cross between the resistant line; Thatcher (Tc) Lr18, and the susceptible cultivar 'Boolani' were used to map rust resistance gene, using SSR markers on chromosome 5BL of hexaploid wheat. The pathotype no 15 was used to inoculate plants. Out of 20 primers tested, eight showed polymorphism between the two parents and were subsequently genotyped in the entire F population. The markers and flanked the locus at a distance of 0.3 and 1.2 cM, respectively. Analysis of 81 genotypes from different backgrounds with these two markers confirmed their usefulness in screening absence or presence of . Therefore, these markers can be used for gene postulation and marker-assisted selection (MAS) of this gene in wheat breeding programs in future.

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Source
http://dx.doi.org/10.1270/jsbbs.16148DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5445969PMC
March 2017

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