水稻孕穗期耐冷性近等基因系耐冷性遗传分析

Xiao-juan YANG,Ya-wen ZENG,Xiao-ying PU,Shu-ming YANG,Juan DU,Shi-quan SHEN, Chang-mei ZHAO,Qing LING

SOUTHWEST CHINA JOURNAL OF AGRICULTURAL SCIENCES（2006）

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Abstract

2003年在阿子营和昆明2种冷害条件下,用昆明小白谷耐冷基因供体培育的近等基因系(NIL,BC4F5)与轮回亲本回交的5个BC5F2群体进行孕穗期耐冷性鉴定,用王建康等(1997)主基因-多基因混合遗传模型对这些群体进行耐冷性遗传分析.结果表明,5个BC5F2群体推断出的NIL的耐冷基因是受1对显性主效基因控制,其中阿子营点主效基因的遗传率为61.81%～81.86%;昆明点为60.88%～72.25%.2005年在昆明点的F4主效基因的遗传率为80.67%～91.55%.

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