Ecological genomics of Chinese wheat improvement: implications in breeding for adaptation.

ABSTRACT:

Background

China has diverse wheat varieties that adapt to very different environments divided into ten agro-ecological zones. A better understanding of genomic differences and patterns of selection among agro-ecological zones could provide useful information in selection of specific adaptive traits in breeding.

Results

We genotyped 438 wheat accessions from ten zones with kompetitive allele specific PCR (KASP) markers specific to 47 cloned genes for grain yield, quality, adaptation and stress resistance. Phylogenetic trees and principle component analysis revealed clear differences in winter and spring growth habits. Nucleotide diversity (π) and π ratio (π_CL/π_MCC) suggested that genetic diversity had increased during breeding, and that Chinese landrace

SUBMITTER: Guo J 

PROVIDER: S-EPMC7590805 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature