%A SHEN Chao,LI Ding-Guo,NIE Yi-Chun,LIN Zhong-Xu %T QTL Mapping for Yield and Fiber Quality Traits Using Gossypium mustelinum Chromosome Segment Introgression Lines %0 Journal Article %D 2017 %J Acta Agronomica Sinica %R 10.3724/SP.J.1006.2017.01733 %P 1733-1745 %V 43 %N 12 %U {https://zwxb.chinacrops.org/CN/abstract/article_6386.shtml} %8 2017-12-12 %X

The genetic basis of upland cotton is narrow, which hinders the progress of genetic improvement of cotton. To effectively broaden the genetic basis of upland cotton, we developed BC5S5 chromosome segment substitution lines (CSSLs) population consisting of 71 CSSLs, which was derived from the Gossypium mustelinum, the wild cotton (AD4) as the donor, and B0011, one parent of national authorized cotton variety Huazamian H318 with good comprehensive characters of upland cotton line (AD1) as the receptor. A comprehensive analysis was conducted via the SLAF-seq genotyping and phenotyping under multiple environments. This population showed a wide range of variation in yield components and fiber quality, and a total of 48 QTLs were detected including 19 for yield components and 29 for fiber quality. Among the QTLs for nine traits, 32 and 16 were on the At and Dt sub-genomes, respectively. Further analyzing revealed that 30 QTLs showed positive additive effects, and 18 QTLs showed negative additive effects. The results of this study lay a foundation for the genetic improvement of upland cotton using the elite alleles of important agronomic traits from G. mustelinum.