Euphytica

, Volume 152, Issue 3, pp 367–378

QTL mapping of fiber quality in an elite hybrid derived-RIL population of upland cotton

Authors

  • Baohua Wang
    • National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cotton Research InstituteNanjing Agricultural University
  • Wangzhen Guo
    • National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cotton Research InstituteNanjing Agricultural University
  • Xiefei Zhu
    • National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cotton Research InstituteNanjing Agricultural University
  • Yaoting Wu
    • National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cotton Research InstituteNanjing Agricultural University
  • Naitai Huang
    • National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cotton Research InstituteNanjing Agricultural University
    • National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cotton Research InstituteNanjing Agricultural University
Article

DOI: 10.1007/s10681-006-9224-2

Cite this article as:
Wang, B., Guo, W., Zhu, X. et al. Euphytica (2006) 152: 367. doi:10.1007/s10681-006-9224-2

Abstract

Xiangzamian 2 (XZM2) was the most widely cultivated cotton hybrid planted as F1 hybrids and as selfed F2 seeds in China before the release of transgenic Bt hybrids. By crossing two parents of XZM2, Gossypium hirsutum cv. Zhongmiansuo12 (ZMS12) and G. hirsutum acc. 8891, and through subsequent selfings, we obtained F8 and F9 populations of 180 recombinant inbred lines (RILs). A RIL population was cultivated in two cotton-growing regions in China for 2 years. The purpose of the present research was to detect quantitative trait loci (QTL) for fiber quality and provide information applicable to cotton breeding. A genetic map was constructed mainly using SSR markers. QTL controlling fiber quality traits were determined at the single-locus and two-locus levels, and genotype-by-environment interactions were analyzed. Among the main-effect QTL, a fiber length QTL qFL-D2-1 and a reflectance QTL qFR-D2-1 were simultaneously detected at two growing regions in 2 years, which suggested a high degree of stability in different environments, and might be of particular value for a marker-assisted selection (MAS) program. The results suggested that epistatic effects, as well as additive effects, of QTL play important roles in fiber quality in these RILs. In our research, the phenomenon of QTL clusters was detected in the cotton genome.

Keywords

Main-effectEpistatic-effectQTLFiber qualityClusters

Abbreviations

AFLP

Amplified fragment length polymorphism

EST

Expression sequence tag

QTL

Quantitative trait locus/loci

RAPD

Random amplified polymorphic DNA

RIL

Recombinant inbred line

SRAP

Sequence-related amplified polymorphism

SSR

Simple sequence repeats

Copyright information

© Springer Science+Business Media B.V. 2006