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《Guizhou Agricultural Sciences》 2014-12
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Genetic Diversity of Maize Inbred Lines in Chongqing

DI Shizhong;LIU Hongfang;SUN Xiaohong;QIN Mi;LUO Yongtong;CHEN Weijing;YANG Fei;Southeast Chongqing Academy of Agricultural Sciences Fuling;Department of Life Sciences,Yangtze Normal University;  
The genetic similar coefficient of 66 maize inbred lines was determined by 32 pairs of SSR primers and their genetic relationship was analyzed by clustering analysis to study the genetic diversity of maize inbred lines and improve breeding efficiency in Chongqing.The results showed that:1)307bands are detected by 32 pairs of primers and 4-25 bands can be detected by a pairs of primers.The polymorphism band accounts for 80.78% and the variation range of PIC is 0.516~0.988 with an average of 0.721.The variation range of genetic similar coefficient among tested inbred lines is 0.54~0.88 with an average of 0.68.Most genetic similar coefficient is 0.60~0.70,accounts for 60.33%,which indicates that the genetic relationship among tested inbred lines is closer but there still is a certain difference in genetic relationship;2)66inbred lines can be divided into 6groups.The modified Reid group and Ludahonggu group accounts for 24.24% and 60.60% respectively.Other germplasm groups,especially tropical germplasm resources should be used in maize breeding in Chongqing.
【Fund】: 重庆市涪陵区科委项目“重庆市部分常用及新选玉米自交系遗传多样性分析及其指纹图谱的构建”(FLKJ2013BBB2129)
【CateGory Index】: S513
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