High-density linkage map construction and QTL analysis for earliness-related traits in Gossypium hirsutum L.

ABSTRACT:

Background

Gossypium hirsutum L., or upland cotton, is an important renewable resource for textile fiber. To enhance understanding of the genetic basis of cotton earliness, we constructed an intra-specific recombinant inbred line population (RIL) containing 137 lines, and performed linkage map construction and quantitative trait locus (QTL) mapping.

Results

Using restriction-site associated DNA sequencing, a genetic map composed of 6,434 loci, including 6,295 single nucleotide polymorphisms and 139 simple sequence repeat loci, was developed from RIL population. This map spanned 4,071.98 cM, with an average distance of 0.63 cM between adjacent markers. A total of 247 QTLs for six earliness-related traits were detected in 6 consecutive years. In addition, 55 QTL coincidence re

SUBMITTER: Jia X 

PROVIDER: S-EPMC5106845 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature