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Association mapping of seed oil and protein contents in upland cotton

文献类型： 外文期刊

作者： Liu, Guizhen 1 ; Mei, Hongxian 2 ; Wang, Sen 1 ; Li, Xinghe 1 ; Zhu, Xiefei 1 ; Zhang, Tianzhen 1 ;

作者机构： 1.Nanjing Agr Univ, MOE Hybrid Cotton R&D Engn Res Ctr, Natl Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Jiangsu, Peoples R China

2.Henan Acad Agr Sci, Sesame Res Ctr, Zhengzhou 450002, Peoples R China

关键词： Upland cotton;Seed oil;Seed protein;SSR;Association mapping

期刊名称：EUPHYTICA （ 影响因子：1.895； 五年影响因子：2.181 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Linkage disequilibrium-based association mapping is a powerful tool for dissecting the genetic basis underlying complex traits. In this study, an association mapping panel consisting of 180 elite Upland cotton cultivars was constructed, evaluated in three locations across 2 years and genotyped using 228 SSRs to detect molecular markers associated with seed oil and protein contents. A total of 86 significant (a = 0.01) marker-trait associations were detected between 58 SSR markers and two seed quality traits in six environments. Fifteen SSR markers distributed on ten chromosomes (A3, A7, A9, A10, A12, A13, D2, D5, D6 and D9) and 12 across 9 chromosomes (A3, A7, A9, A10, A12, D2, D3, D5 and D9) associated with seed oil and protein contents, respectively, could be detected in more than one environment. Among the 18 SSR markers significantly associated with seed oil and/or protein contents, nine loci were associated with both seed traits simultaneously. The results of this study provide useful information for further understanding the genetic basis of cottonseed oil and protein traits, and they should facilitate future efforts to breed cotton containing seeds with high oil or high protein contents using MAS.

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