%0 Journal Article %A QIU Fu-lin %A ZHUANG Jie-yun %A HUA Ze-tian %A WANG Yan-rong %A CHENG Shi-hua %T Inspect of Genetic Differentiation of Main Parents of japonica Hybrid Rice in the Northern China by Simple Sequence Repeats(SSR) %D 2005 %R %J Chinese Journal OF Rice Science %P 101-104 %V 19 %N 2 %X Genetic differentiation and indica component degree analysis were conducted on the main parents of japonica hybrid rice in the northern China by simple sequence repeats(SSR). The genomic DNAs of the main parents were amplified with 15 primers. Fifty two polymorphic markers were generated in all. Every primer offered 3.47 markers on average. The molecular phylogenetic tree by UPMGA method showed that main parents were divided into five groups at genetic similarity coefficient 0 69. The parents between groups have great genetic differentiation relatively. The extent of indica component value was from 0 12 to 0.48 in the parents. %U http://www.ricesci.cn/EN/abstract/article_696.shtml