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《Guizhou Agricultural Sciences》 2011-09
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Genetic Diversity of Hybrid Japonica Rice Sterilize Lines in China

YAN Shuang-yong,MA Zhong-you,FAN Jun-shan,ZHANG Chun-he,LI Su-min(Tianjin Crops Institute,Tianjin 300112,China)  
The coefficients of parentage(COP) among forty hybrid Japonica rice sterilize lines were analyzed to explore the genetic diversity and provide a reference for improvement of Japonica rice sterilize lines.The results showed that the COP values varied from 0 to 0.75,with an average of 0.03.About sixty percent of the COP values were 0.It indicated that there was little genetic relationship between those pairs of lines.Clustering of lines based on COP matrix resulted in a total of six groups.GroupⅠconsisted of ten sterilize lines,which all derived from Nongken 58.Group Ⅱ was composed of twenty sterilize lines,they are all offsprings of Tengban 5.Group Ⅲ,composed of seven sterilize lines,these lines derived from Nongken 57.Group Ⅳ,GroupⅤ and GroupⅥ included only one line respectively,the three lines had no relationship with other lines,which indicated that the genetic differences among Japonica rice sterilize lines were great and the genetic diversity was high.
【Fund】: 天津市农业科学院院长基金项目“杂交粳稻亲本杂种优势群的划分及杂种优势模式构建”(07002)
【CateGory Index】: S511.22
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