Germplasm dynamics: the role of ecotypic diversity in shaping the patterns of genetic variation in Lolium perenne.

ABSTRACT: Perennial ryegrass (Lolium perenne) is the most widely grown temperate grass species globally. Intensive plant breeding in ryegrass compared to many other crops species is a relatively recent exercise (last 100 years) and provides an interesting experimental system to trace the extent, impact and trajectory of undomesticated ecotypic variation represented in modern ryegrass cultivars. To explore germplasm dynamics in Lolium perenne, 2199 SNPs were genotyped in 716 ecotypes sampled from 90 European locations together with 249 cultivars representing 33 forage/amenity accessions. In addition three pseudo-cross mapping populations (450 individual recombinants) were genotyped to create a consensus genetic linkage map. Multivariate analyses revealed strong differentiation between cultivars with

SUBMITTER: Blackmore T 

PROVIDER: S-EPMC4776279 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature