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中国农学通报

中国农学通报 ›› 2005, Vol. 21 ›› Issue (7): 64-64.

所属专题： 水稻

• 目次 • 上一篇    下一篇

水稻籽粒簇生材料Z1820簇生性的遗传分析

张毅,沈福成,杨正林,谢戎,钟秉强,谭自俊,何光华   

  • 出版日期:2005-07-05 发布日期:2005-07-05

Analysis on the Inheritance of Clustered Spikelets in Rice Resource Z1820

Zhang Yi，Shen Fucheng，Xie Rong，Zhong Bingqiang，Yang Zhenglin，Tan Zijun，He Guanghua   

  • Online:2005-07-05 Published:2005-07-05

摘要： 用簇生性亲本Z1820与无簇生性的正常亲本缙香1A、缙2A和缙4A杂交得F1代，让F1自交得F2，同时以缙香1A、缙2A和缙4A为轮回母本亲本回交得BF1，调查各世代簇生情况。结果分析表明：F1的簇生性为中间类型，F2、BF1的簇生性在簇生程度上产生分离；Z1820与缙香1A、缙2A产生的后代的遗传行为符合单基因不完全显性遗传，而Z1820与缙4A的遗传表现则有所偏离，缙4A可能具有影响簇生性表现的遗传因子。笔者首次使用簇生率描述水稻的簇生性。

Abstract: Z1820 is a rice resource of clustered spikelets but Jinxiang1A, Jin2A, and Jin4A are normal. Three F1 combinations and 3 F2 generations of normal/clustered were obtained in crosses of Jinxiang1A/Z1820, Jin2A /Z1820 and Jin4A /Z1820. And three backcrosses were produced by using Jinxiang1A, Jin2A, and Jin4A as recurrent female parents. The main results showed: all F1 combinations performance a middle degree of clustering character and F2, BF1 generations represent segregation in clustering degree; the character of clustered spikelets in Z1820 is controlled by a part-dominance gene but a genetic factor in Jin4A can affect the expression of clustering. Clustered ratio was proposed firstly to characterizing clustering degree.