Association Mapping for Fiber-Related Traits and Digestibility in Alfalfa (Medicago sativa).

ABSTRACT: Association mapping is a powerful approach for exploring the molecular genetic basis of complex quantitative traits. An alfalfa (Medicago sativa) association panel comprised of 336 genotypes from 75 alfalfa accessions represented by four to eight genotypes for each accession. Each genotype was genotyped using 85 simple sequence repeat (SSR) markers and phenotyped for five fiber-related traits in four different environments. A model-based structure analysis was used to group all genotypes into two groups. Most of the genotypes have a low relative kinship (<0.3), suggesting population stratification not be an issue for association analysis. Generally, the Q + K model exhibited the best performance to eliminate the false associated positives. In total, 124 marker-trait associations were predi

SUBMITTER: Wang Z 

PROVIDER: S-EPMC4797558 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature