Mapping and Validation of qHD7b: Major Heading-Date QTL Functions Mainly under Long-Day Conditions.

ABSTRACT: Heading date (HD) is one of the agronomic traits that influence maturity, regional adaptability, and grain yield. The present study was a follow-up of a previous quantitative trait loci (QTL) mapping study conducted on three populations, which uncovered a total of 62 QTLs associated with 10 agronomic traits. Two of the QTLs for HD on chromosome 7 (qHD7a and qHD7b) had a common flanking marker (RM3670) that may be due to tight linkage, and/or weakness of the statistical method. The objectives of the present study were to map QTLs associated with HD in a set of 76 chromosome segment substitution lines (CSSLs), fine map and validate one of the QTLs (qHD7b) using 2997 BC₅F_2:3 plants, and identify candidate genes using sequencing and expression analysi

SUBMITTER: Sohail A 

PROVIDER: S-EPMC9459803 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature