籼粳稻杂交后代群体形态分化与遗传分化的比较

摘要/Abstract

摘要： 以典型籼稻七山占和典型粳稻秋光构建的F8、F9重组自交系为试材，研究表型性状所揭示的形态分化与籼粳特异SSR标记所揭示的遗传分化差异，探讨维管束性状与形态分化和遗传分化的关系。形态分化和遗传分化所揭示的群体后代籼粳属性均呈偏粳分布，遗传分化所揭示的更加偏粳。依程氏指数、大小维管束比、大维管束比的分类结果与遗传分化相符度均为50%左右，将维管束性状作为程氏指数补充所得总分值与遗传分化的相符度为80%左右，相符度显著增高。维管束数量比可以作为籼粳分类的补充性状。

关键词: 水稻, 重组自交系, 程氏指数, 维管束性状, 微卫星标记

Abstract: A recombinant inbred line (RIL) population of F8 and F9 generations derived from a cross between Qishanzhan (typical indica) and Akihikari (typical japonica) were used as materials to study the morphological differentiation based on phenotype and genetic differentiation based on indica and japonica specific SSR markers and to evaluate whether vascular bundle characters could be a supplement to the method based on the Cheng′s index to discriminate indica and japonica. The results showed that the frequency distribution of morphological differentiations and genetic differentiations in the filial generation were all japonicalinous. The population was more japonicalinous based on the frequency distribution of genetic differentiation than on that of morphological differentiation. The consistence degree of classification based on the vascular bundle characters or the Cheng′s index was about 50% compared with the genetic differentiation. The consistence degree of classification based on the total scores of the Cheng′s index and the scores based on the vascular bundle characters was about 80% compared with the genetic differentiation. It is suggested that vascular bundle characters could be used as a helpful supplement for subspecies classification.

Key words: rice, recombinant inbred line, Cheng′s index, vascular bundle characteristics, simple sequence repeat markers

毛艇, 徐海, 郭艳华, 朱春杰, 陈凯, 王嘉宇, 徐正进. 籼粳稻杂交后代群体形态分化与遗传分化的比较[J]. 中国水稻科学 2009,23(3): 323-326 . .

MAO Ting,XU Hai,GUO Yanhua,ZHU Chunjie,CHEN Kai,WANG Jiayu,XU Zhengjin*. Comparative Study on Morphological Differentiation and Genetic Differentiation in Filial Generation of Cross Between indica and japonica Rice[J]. Chinese Journal of Rice Science 2009,23(3): 323-326 ..

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