Identification of the vernalization gene VRN-B1 responsible for heading date variation by QTL mapping using a RIL population in wheat.

ABSTRACT:

Background

Heading time is one of the most important agronomic traits in wheat, as it largely affects both adaptation to different agro-ecological conditions and yield potential. Identification of genes underlying the regulation of wheat heading and the development of diagnostic markers could facilitate our understanding of genetic control of this process.

Results

In this study, we developed 400 recombinant inbred lines (RILs) by crossing a γ-ray-induced early heading mutant (eh1) with the late heading cultivar, Lunxuan987. Bulked Segregant Analysis (BSA) of both RNA and DNA pools consisting of various RILs detected a quantitative trait loci (QTL) for heading date located on chromosomes 5B, and further genetic linkage analysis limited the QTL to a 3.31 cM region. We then ide

SUBMITTER: Li Y 

PROVIDER: S-EPMC7359472 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature