Fine mapping the QTL qFS-chr.23, using a CSIL

文献类型: 外文期刊

第一作者: Wang, Youwu

作者: Wang, Youwu;Zhang, Jingchuan;Kong, Guangchao;Lin, Hai

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关键词: cotton;chromosome segment introgression lines;quantitative trait locus;fibre quality;fine mapping

期刊名称:PLANT BREEDING ( 影响因子:1.832; 五年影响因子:1.956 )

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收录情况: SCI

摘要: In an earlier advanced-backcross quantitative trait locus (QTL) analysis of an interspecific cross of Gossypium hirsutum cv. Xinluzhong 36'(XLZH36') and G.barbadense cv. Xinhai 21'(XH21'), a QTL for fibre strength in the chromosome segment introgression line IL23-09 was analysed. Single marker analysis revealed that the markers on chro.23 were associated with fibre strength. Using composite interval mapping with the F-2 population (1296 plants), a QTL for fibre strength was detected on chro. 23. The QTL explained 8.9% and 15.9% of phenotypic variances in the F-2 and F-2:3 generations, respectively. Substitution mapping suggested that the QTL was located at a physical distance of 23.4kb between the markers BNL1414 and the single nucleotide polymorphism (SNP) locus D09_43776813 C-G. We designated this QTL as qFS-chr.23 (quantitative trait locus for fibre strength on chro.23). This work provides a valuable genetic resource for the breeding of high fibre quality in cotton and will facilitate future efforts for map-based cloning.

分类号: S3

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