Association of candidate genes with drought tolerance traits in diverse perennial ryegrass accessions.

ABSTRACT: Drought is a major environmental stress limiting growth of perennial grasses in temperate regions. Plant drought tolerance is a complex trait that is controlled by multiple genes. Candidate gene association mapping provides a powerful tool for dissection of complex traits. Candidate gene association mapping of drought tolerance traits was conducted in 192 diverse perennial ryegrass (Lolium perenne L.) accessions from 43 countries. The panel showed significant variations in leaf wilting, leaf water content, canopy and air temperature difference, and chlorophyll fluorescence under well-watered and drought conditions across six environments. Analysis of 109 simple sequence repeat markers revealed five population structures in the mapping panel. A total of 2520 expression-based sequence readin

SUBMITTER: Yu X 

PROVIDER: S-EPMC3617828 | biostudies-literature | 2013 Apr

REPOSITORIES: biostudies-literature