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ARS Home » Southeast Area » Tifton, Georgia » Crop Genetics and Breeding Research » Research » Publications at this Location » Publication #306210

Title: Phenotyping and genotyping RIL populations of peanut for marker development

item Holbrook, Carl - Corley
item ISLEIB, T - North Carolina State University
item OZIAS-AKINS, P - University Of Georgia
item CHU, Y - University Of Georgia
item KNAPP, S - Monsanto Corporation
item TILLMAN, B - University Of Florida
item Guo, Baozhu
item BUROW, M - Texas A&M University

Submitted to: ASA-CSSA-SSSA Annual Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 6/15/2014
Publication Date: N/A
Citation: N/A

Interpretive Summary: not required.

Technical Abstract: Phenotyping of structured populations, along with molecular genotyping, is needed for marker development in peanut. This research is essential for making the peanut genome sequence useful to breeders because it will make the connection between genes, gene markers, genetic maps, and agronomic traits in peanut. Several structured populations are available, and phenotyping efforts are ongoing. Sixteen inbred mapping populations have been created using parents that maximize genetic diversity for practical breeding objectives. First, two modern runner cultivars (Tifrunner and Florida-07) were selected as common parents because runner cultivars account for about 80% of the production in the U.S. Second, eight unique parents were selected to supply diversity across market classes and botanical varieties and are donors of favorable alleles for enhancing drought tolerance and resistance to most important diseases of peanut in the US. Phenotyping of two additional RIL populations is ongoing since these are part of the genome sequencing effort. The T population resulted from the cross of Tifrunner x GT-C20, and the S population resulted from the cross of SunOleic 97R and NC 94022. Phenotypic data from these genetic resources should result in the identification of genetic markers for numerous economically important traits.