作物学报 ›› 2015, Vol. 41 ›› Issue (10): 1500-1509.doi: 10.3724/SP.J.1006.2015.01500
陈广凤1,2,陈建省1,田纪春1,*
CHEN Guang-Feng1,2,CHEN Jian-Sheng1,TIAN Ji-Chun1,*
摘要:
株高是影响小麦产量和控制倒伏的重要因素,研究小麦株高相关性状的遗传机制对高产育种具有指导意义。以205份中国冬麦区小麦品种(系)为材料,利用分布于小麦全基因组的24 355个单核苷酸多态性(SNP)标记对株高相关性状进行关联分析。共发现38个SNP与株高相关性状显著关联(P < 0.0001)的,分布在1B、2A、2B、3A、3B、3D、4A、4B、5A和6D染色体上。其中,11个位点在至少2个环境中稳定表达,可用于开发CAPS标记。同时,发掘了一批株高性状相关基因的优异等位变异,如降低株高的等位变异BobWhite_c48009_52,平均降低株高12.9 cm;降低穗下节间长的等位变异BS00039422_51-C和IAAV1698-A,分别降低穗下节间长5.9 cm和6.6 cm。本研究发掘的控制小麦株高基因位点,为在分子水平上研究小麦株高复杂性状提供了有价值的参考。
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