【摘要】 通过对供试亚洲栽培稻５种同工酶、１０个位点的分析发现，东亚、南亚籼稻品种在Ａｍｐ－１，Ａｍｐ－ｘ，Ａｍｐ－ｙ，Ｅｓｔ－２，Ｅｓｔ－１０五个位点上表现出较大的不同。将五个位点基因以其Ｄｅ值数量化进行主成分分析表明，南亚和东亚材料分别处在不同的群体中，南亚品种主要分布在Ｉ、Ｉ、ＩＩ群；东亚材料主要分布在ＩＶ、Ｖ群。Ｉ、Ｖ群距离最远，南亚、东亚品种亦主要处在这两个群体内。南亚的Ａｕｓ和东亚的中国籼稻群体最具各自地区的特点。由Ｄｅ值得到的Ｐｅ值分析得出了类似的结果。最后，据中国籼稻与南亚籼稻存在明显差异对当前两个主要的亚洲栽培稻分类体系提出了置疑。更多还原

【Abstract】 Analysis was made on 10 polymorphic loci coding 5 enzymes in 642 cultivated rice (O.sativa) accessions from Asia, Africa (mainly ITA and IRAT varieties) and America. The differentiation of indica rice between south Asia and east Asia were found in five loci including Amp 1, x, y, Est 2,10 . After each gene in five loci was displaced with its De value, principal component analysis was done. Principal component analysis shows five groups——I, II, III, IV, V. The varieties from south Asia are mainly located in group I, II, III and that from east Asia in group IV, V. The differences between group I and group V are most significant. Aus rices from south Asia and Chinese rices from east Asia are mainly in group I and group V respectively. A similar result was obtained from analysis of Pe values through calculating De values.更多还原