QTL analysis of agronomic traits in soybean | 大豆农艺性状的QTL分析
2010
Lv Zhuzhang, Rizhao Polytechnic College, Rizhao (China) | Yang Jianhua, Rizhao Polytechnic College, Rizhao (China) | Li Yuhuan, Rizhao Polytechnic College, Rizhao (China)
[Objective] The aim was to analyze QTL of agronomic traits in soybean and provide reference for a discussion on soybean genetic mechanism and genetic breeding. [Method] The composite interval mapping method was used for QTL location and genetic effects analysis on 5 quantitative traits including protein content, fat content, yield, 100-grain weight and growth period. [Result] The control of these traits 4, 4, 1, 2, 5, a total of 16 QTL loci was detected. The genetic contribution rate was in 7.4%-33.7%, among which, a large main-effect QTL of the genetic contribution rate were located in linkage group I Satt562-Sat_219, Sat_219-Satt496, Sat_219-Satt496 interval of the three control protein content QTL sites, their genetic contribution rates were 29.15%, 33.7 % and 31.67% respectively, all from the female parent Hefeng 25 plus minor gene; still in O linkage group Satt477-Satt331, Satt331-Satt153 interval of two control growing period QTL loci, their genetic contribution rates were up to 24.69% and 24.96%, also from the female parent Hefeng 25 plus minor gene. In addition, six QTL sites from M linkage group Satt175 (protein), A1 linkage group Satt684 (oil), F linkage group Satt348 (oil), J linkage group Sat_412 (oil), C1 linkage group Sat_416 (100-grain weight) and C1 linkage group Sat_416 (growth period) marks only 0.01 cm were detected. [Conclusion] QTL sites which had effects on the 5 important agronomic traits in soybean were located.
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