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《Chinese Journal of Rice Science》 2003-01
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Japonica Discrimination of Indica-Compatible Japonica Lines in Rice

DING Xiao hua, CHEN Yue jin, YANG Chang shou, ZHANG Ze min, LU Yong gen, ZHANG Gui quan *(Plant Molecular Breeding Research Center, South China Agricultural University, Guangzhou 510642, China; *Corresponding author)  
The indica compatible japonica line (ICJL) is of a japonica character. The genetic diversity of 6 indica testers, 6 japonica testers and 10 candidate ICJLs were investigated by 100 microsatellite markers distributed randomly over 12 chromosomes. It indicated that there was obvious difference in the degree of indica japonica differentiation among the testers whose D j values (japonica discrimination value) ranged from 0.12-0.87. All indica testers were found to show D j values of below 0.25, while D j values of all japonica testers over 0.75. The D j value detected by DNA could be used for japonica discrimination of ICJLs. On basis of D j value, the lines G2416 3, G2417 2 1, G3004 4 and G3005 4 2 belonged to japonicaclinous group, G2505 1 and G2605 belonged to japonica group.
【Fund】: 国家高技术发展计划资助项目 (1 0 1 - Z1 6- 0 2 - 0 12 0 0 1AA2 1 1 1 81 )。
【CateGory Index】: S511.22
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