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结球甘蓝抽薹开花时间性状的QTL定位及分析

DOI: 10.7668/hbnxb.2013.05.001, PP. 1-5

Keywords: 结球甘蓝,抽薹及开花时间,数量性状位点

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Abstract:

在已构建的结球甘蓝AFLP、SSR和SRAP标记高密度遗传图谱的基础上,运用MapQTL4.0软件对结球甘蓝F2群体抽薹、开花时间两性状分别进行QTL定位和分析。最终检测到2个控制甘蓝抽薹时间性状的QTL(qbt-3-2、qbt-9-1),以及一个同开花时间性状相关的QTL(qft-9-1),分别位于连锁群LG3与LG9上,这3个QTL均为增效位点,共解释甘蓝抽薹、开花时间性状变异的17.5%,22.7%;同时得到与QTLs共分离的2个分子标记E46M52-5、me26-em13-1,均可作为辅助选育甘蓝耐抽薹品种的标记使用,这将为结球甘蓝耐抽薹品种的选育提供理论依据。

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