文献类型： 外文期刊

作者： Li, Chengqi ¹ ; Wang, Changbiao ² ; Dong, Na ¹ ; Wang, Xiaoyun ³ ; Zhao, Haihong ¹ ; Converse, Richard; Xia, Zhe ⁴ ; W ¹ ;

作者机构： 1.Henan Inst Sci & Technol, Coll Life Sci, Key Discipline Open Lab Crop Mol Breeding, Henan Inst Higher Learning,Cotton Res Inst, Xinxiang 453003, Henan, Peoples R China

2.Shanxi Acad Agr Sci, Cotton Res Inst, Yuncheng 044000, Shanxi, Peoples R China

3.Henan Normal Univ, Coll Life Sci, Xinxiang 453003, Henan, Peoples R China

4.Henan Normal Univ, Coll

关键词： QTL;Node of first fruiting branch (NFFB);Height of node of first fruiting branch (HNFFB);Single-marker analysis;Common 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： The selection and popularization of early-maturing cotton is paramount in resolving the conflict between occupying farmlands utilizing grain and cotton while optimizing agricultural structure. Node of first fruiting branch (NFFB) and its height (HNFFB) can be used as the important indicators to measure cotton earliness. In this study, Baimian2, an early-maturing upland cotton (Gossypium hirsutum L.) variety, was used as the female parent crossed with a late-maturing material (TM-1) and intermediate-maturing variety (CIR12), respectively. Quantitative trait locus (QTL) detection for NFFB and HNFFB was performed within the two F_2:3 populations, Baimian2 x TM-1 and Baimian2 x CIR12 by composite interval mapping (CIM) and mixed model CIM (MCIM). Eight QTL (three suggestive and five significant) for NFFB and six QTL (three suggestive and three significant) for HNFFB were detected in both populations, located on C1(A1), C5(A5), C6(A6), C9(A9), C11(A11), C13(A13), C17(D3), C25(D6), C12(A12)/C26(D12) and LG1. Results of QTL are consistent with separation analysis to some extent. The two significant major QTL, qNFFB-17-I for NFFB and qHNFFB-17-I for HNFFB, were detected simultaneously by CIM and MCIM. They had high reliability and could be used for the marker-assisted breeding to improve cotton earliness. Single marker-analysis showed that 11 molecular markers, such as CGR5222, are linked with NFFB and/or HNFFB.Digital Object Identifier http://dx.doi.org/10.1007/s10681-012-0720-2