Working group session:
Functional Genomics
Presentation type:
poster
Authors:
Jia, Fei; Gong, Wan-kui; Li, Jun-wen; Sun, Fu-ding; Liu, Ai-ying ; Shi, Yu-zhen; Gong, Ju-wu ; Shang, Hai-hong ; Zhang, Zhen; Jamshed, Muhammad; Kibalou, PALANGA Koffi; Yuan, You-lu
Presenter:
Correspondent:
Yuan, You-lu
Abstract:
In this study, a RIL population (F6:8) with 196 lines was developed from an upland cotton cross of sGK9708, derived from an elite widely planted cultivar CRI 41, and 0-153, an excellent cultivar with superb fiber strength. Multi-environmental experiments in ten environments were conducted at six locations in four years and all five fiber quality traits were evaluated. A genetic linkage map harbouring 400 SSR loci and 54 linkage groups was constructed, which spanned 1260.68 cM, with an average marker interval of 3.15 cM between two markers and approximately covered 28.33% of the cotton genome. Among the total 48 QTL detected at least in 3 environments, 5 major QTL were detected at least in 8 environments: 2 for fiber length (qFL-1-1and qFL-9-2) which were mapped on Chr25 and Chr7 respectively and 3 for fiber strength (qFS-1-2, qFS-1-4 and qFS-9-5) which were mapped on Chr25 and Chr7 respectively. All the 5 QTL displayed stably in multiple environments and explained a larger phenotypic variance (with average PV>10%), among which qFS-1-4 might be the same as STR-25 in Lacape’s report (Lacape et al. 2005), qFS-1-2 and qFS-9-5 were new identified ones.