Mapping quantitative trait loci for cottonseed oil, protein and gossypol content in a Gossypium hirsutum x Gossypium barbadense backcross inbred line population
文献类型: 外文期刊
第一作者: Yu, Jiwen
作者: Yu, Jiwen;Yu, Shuxun;Fan, Shuli;Song, Meizhen;Zhai, Honghong;Li, Xingli;Zhang, Jinfa
作者机构:
关键词: Tetraploid cotton;Cottonseed;Oil;Protein;Gossypol;Linkage map;Backcross inbred line (BIL);Quantitative trait locus (QTL)
期刊名称:EUPHYTICA ( 影响因子:1.895; 五年影响因子:2.181 )
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收录情况: SCI
摘要: Cotton is one of the most important oil-producing crops and the cottonseed meal provides important protein nutrients as animal feed. However, information on the genetic basis of cottonseed oil and protein contents is lacking. A backcross inbred line (BIL) population from a cross between Gossypium hirsutum as the recurrent parent and G. barbadense was used to identify quantitative trait loci (QTLs) for cottonseed oil, protein, and gossypol contents. The BIL population of 146 lines together with the two parental lines was tested in the same location for three years in China. Based on a genetic map of 392 SSR markers and a total genetic distance of 2,895.2 cM, 17 QTLs on 12 chromosomes for oil content, 22 QTLs on 12 chromosomes for protein content and three QTLs on two chromosomes for gossypol content were detected. Seed oil content was significantly and negatively correlated with seed protein content, which can be explained by eight QTLs for both oil and protein contents co-localized in the same regions but with opposite additive effects. This research represents the first report using a permanent advanced backcross inbred population of an interspecific hybrid population to identify QTLs for seed quality traits in cotton in three environments.
分类号: S3
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