Phylogenetic Differentiation of Cultivated Rice, XXII. Numerical Evaluation of the Indica-Japonica Differentiation
Phylogenetic Differentiation of Cultivated Rice, XXII. Numerical Evaluation of the Indica-Japonica Differentiation
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DOI：
10.1270/jsbbs1951.31.402
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发表时间：
1981-12
期刊：
影响因子：
2.4
通讯作者：
H. Morishima;H. Oka
中科院分区：
文献类型：
--
作者：
H. Morishima;H. Oka
对随机抽取的89个亚洲品种的11个性状数据进行主成分分析，再次证实了作者先前的论断，即水稻品种间的籼粳分化是可以根据性状关联模式进行识别的，尽管这两种类型之间没有关键性状的区分。单个性状的错误分类概率从苗木的氯酸钾抗性的3%左右到小穗长宽比的40%左右。结合3个或4个特征值的判别函数，尽管仍有少数中间形式具有重组特征，但错误分类的概率较低。F1不育关系在分类上几乎毫无用处。品种间性状差异的一半左右可归因于水稻品种间的遗传差异。根据12个等位基因的28个等位基因的数据，估计两种类型之间的归一化遗传一致性为0.62。大量的基因差异似乎参与了水稻与水稻的分化。
Principal component analysis of the data for 11 characters of 89 cultivars sampled at random from a large collection of Asian origin has reconfirmed the previous assertion by the junior author that the Indica-Japonica diferentiation of rice cultivars is recogni-zable on the basis of character-association patterns, although there is no key character discriminating between the two types. The probability of misclassification by a single character ranged from about 3 percent by the potassium chlorate resistance of seedling to about 40 percent by the length/width ratio of spikelets. Discriminant functions combining 3 or 4 character values gave lower probabilities of misclassification, although there still remained a few intermediate forms having recombined characteristics. The F1 sterility relationships were almost useless for the purpose of classification. About a half of the total character variance among the cultivars was attributable to Indica-Japonica differenti-ation. The normalized genetic identity between the two types was estimated to be 0.62 from data for 28 alleles at 12 Ioci. A great number of genic differences seem to be involved in the Indica-Japonica differentiation.