绿豆产量相关农艺性状的QTL定位
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国家自然科学基金项目(30170635);农业部作物种质资源保护项目(NB04-22-12);国家科技基础条件平台项目(2004DKA30380-08);“十一五”国家科技支撑计划项目(2006BAD02B08)


QTL Mapping of Yield-Associated Agronomic Traits in Mungbean
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    摘要:

    绿豆育种的目标性状大多是受多基因控制的数量性状,表现型受环境影响很大。为深入分析绿豆复杂数量性状的遗传特征,本试验以绿豆Berken/ACC41 F10重组近交系群体为作图群体,利用该群体已经构建的包含79个RFLP标记的分子连锁图谱对北京和广西2个种植环境下考察的11个绿豆产量相关农艺性状进行QTL定位。结果表明,2个环境下共检测到产量相关性状QTL 63个(其中北京25个,广西38个),分布于除第13连锁群以外的12条连锁群。大部分QTL只在单一环境下被检测到,说明产量相关QTLs与环境之间存在明显的互作。2个环境均能检测到的QTL仅有6个,分别为控制荚长、百粒重、生育期的QTLs,这6个在不同生态环境下同时发挥效应的QTLs对于绿豆分子标记辅助育种具有特殊的意义。研究还发现2个QTLs富集区域和若干成束分布的QTLs,它们可能是发掘通用QTL的候选位点。

    Abstract:

    Mungbean breeding objective traits are mostly controlled by multiple quantitative genes. The phenotypes of mungbean are affected by environment greatly. In order to analysis the genetic of the yield-associated traits in mungbean, RIL populations (F10) derived from the cross between an economical parent Berken and a wild parent ACC41 were planted in Beijing and Nanjing for their yield-associated agronomic traits evaluation. The results showed that in total of 63 QTLs were investigated in Beijing and Guangxi (25 in Beijing and 38 in Guangxi), located on twelve linkage groups except the 13th group. Most of the QTLs were detected in single environment, indicating the significant interactions between QTL and environments. Only 6 QTLs controlling pod length, 100-seed weight and day to mature were detected in both Beijing and Guangxi environment. Those QTLs will be of special significance for mungbean’s molecular-marker-assisted-breeding. Two regions on linkage group 5 and 9 with clustered QTLs relevant to multiple yield-associated agronomic traits and five linkage group with bundled QTLs relevant to a single agronomic traits identified in the study may provide the genetic loci of the universal yield QTL.

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梅丽.绿豆产量相关农艺性状的QTL定位[J].植物遗传资源学报,2011,12(6):948-956.

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  • 收稿日期:2011-01-04
  • 最后修改日期:2011-07-12
  • 录用日期:2011-07-12
  • 在线发布日期: 2011-11-01
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