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ARS Home » Southeast Area » Dawson, Georgia » National Peanut Research Laboratory » Research » Publications at this Location » Publication #342391

Research Project: Developing Strategies to Identify Useful Genes in Peanut and Breeding High Yielding Peanut Varieties and Germplasm

Location: National Peanut Research Laboratory

Title: SSR Markers Assessed for Peanut Smut Disease Resistance

item De Blas, Francisco - Universidad De Cordoba
item Bressano, Marina - Universidad De Cordoba
item Arias De Ares, Renee
item Scheffler, Be - US Department Of Agriculture (USDA)
item Soave, Sara - Criadero El Carmen, Arg
item Soave, Juan - Criadero El Carmen, Arg
item Costero, B - Universidad De Cordoba
item Pepermans, M - Universidad De Cordoba
item Perez, Ma - Universidad De Cordoba
item Buteler, Mario - Criadero El Carmen, Arg
item Seijo, Guillermo - Instituto De Botánica Del Nordeste

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 2/20/2017
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Peanut smut disease, caused by Thecaphora frezii (Carranza & Lindquist), can result in yield losses higher than 50%. Several strategies have been developed for disease management but they are still insufficient. The smut genetic resistance found in wild species and Bolivian landraces is currently the best-known alternative to manage the epiphytotic, and SSR markers are a useful tool to facilitate the rapid introgression of these attributes for cultivar development. Three crosses between Argentinian susceptible cultivars and two resistant/tolerant Bolivian landraces give rise to segregant populations. Also, three wild species were used to construct a fertile amphidiploid resistant to the peanut smut, which crossed with an elite line originated a population of 93 recombinant inbred lines (RILs). The parents of all these populations were screened with 380 SSR markers—288 novel SSRs, 12 InDels and 80 SSRs obtained from the literature—which were also analyzed by BLAST2GO to discriminate those associated to candidate genomic coding regions. An average of 100 polymorphic markers across resistant and susceptible parental materials were found, which are being further tested on the four different segregant progenies to check for resistant attribute association.