Genome wide association mapping for heat tolerance in sub-tropical maize.

ABSTRACT:

Background

Heat tolerance is becoming increasingly important where maize is grown under spring season in India which coincide with grain filling stage of crop resulting in tassel blast, reduced pollen viability, pollination failure and barren ears that causes devastating yield losses. So, there is need to identify the genomic regions associated with heat tolerance component traits which could be further employed in maize breeding program.

Results

An association mapping panel, consisting of 662 doubled haploid (DH) lines, was evaluated for yield contributing traits under normal and natural heat stress conditions. Genome wide association studies (GWAS) carried out using 187,000 SNPs and 130 SNPs significantly associated for grain yield (GY), days to 50% anthesis (AD), days to

SUBMITTER: Longmei N 

PROVIDER: S-EPMC7934507 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature