Title: Studies on heterotic ecotypes and heterotic patters of japonica rice
Abstract:The heterotic ecotypes were studies by analysing of heterosis of the F_(1) hybrids,which were created in a diallel set of cross between 9 ecological types. The heterotic patterns of japonica rice were...The heterotic ecotypes were studies by analysing of heterosis of the F_(1) hybrids,which were created in a diallel set of cross between 9 ecological types. The heterotic patterns of japonica rice were also established. The result indicated that Japonica ecotype of Northwest China, Taiwan, Japanese and Korea were considered as heterotic ecotypes in this study. The best heterotic patterns in this study were Japonica ecotype of Korea×Japanese Japonica ecotype, Japonica ecotype of Northwest×American rice and Taiwan japonica rice×Japonica varieties of Japanese. It suggested that Northwest Japonica varieties have heterotic genes in number of grains,Taiwan,Japanese and Korean japonica varieties in number of panicle, IRAT varieties in grain weight, and there were not significant differences of correlation coefficient between heterosis and the divergence of parents in morphological traits.Read More
Publication Year: 2005
Publication Date: 2005-01-01
Language: en
Type: article
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