Analysis of QTL for yield-related traits in cassava using an F-1 population from non-inbred parents
文献类型: 外文期刊
第一作者: Chen, Xin
作者: Chen, Xin;Fu, Yuhua;Xia, Zhiqiang;Jie, Li;Lu, Cheng;Wang, Wenquan;Chen, Xin;Fu, Yuhua;Xia, Zhiqiang;Jie, Li;Wang, Haiyan;Lu, Cheng;Wang, Wenquan
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关键词: Cassava;Genetic map;Breeding
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: A cassava F-1 population raised from the cross SC6 x Mianbao was used to construct a genetic linkage map. The map incorporated 200 polymorphic amplified fragment length polymorphism, sequence-related amplified polymorphism, simple sequence repeat (SSR), and expressed sequence tag (EST)-SSR markers which fit a 1:1 segregation ratio. It comprised 20 linkage groups (LGs) and spanned a genetic distance of 1645.1 cM with an average marker interval of 8.2 cM. Fifty-seven repeatedly detected QTLs (rd-QTLs) for three phenotypic traits (fresh root yield, root dry matter content, and root starch content) were identified in the F-1 population in four trials of year 2003, 2004, 2005, and 2008 by inclusive composite interval mapping. Among the 57 rd-QTLs, 25 rd-QTLs were linked to SSR/EST-SSR markers, which will help to facilitate marker-assisted selective breeding in cassava, and 15 marker intervals on ten LGs showed pleiotropic effects.
分类号: S3
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