[Genetic variation of main restorer lines of hybrid rice in China was revealed by microsatellite markers].
A total of thirty-five restorer lines of hybrid rice (Oryza sativa L.) were analyzed by twenty-five SSR (simple sequence repeats) primer pairs, which disperse on 12 chromosomes in rice. Those primers detected 65 alleles among 35 restorer lines of hybrid rice. Per primer pair detected 2.6 alleles on the average. PIC (polymorphism index content) values ranged from 0.206 to 0.682. PIC value is 0.414 on the average. The result from cluster analysis shows that hybrid rice restorer lines have abundant resource in China, but the genetic diversity is small and the genetic background is vulnerable among them. The utilization of rice heterosis was limited seriously.
Key Laboratory of MOE for Plant Developmental Biology, Institute of Genetics, Wuhan University, Wuhan 430072, China.
Shi-Hua
SH
Duan
Jia-Ning
JN
Mao
Ying-Guo
YG
Zhu
D014644:Genetic Variation; D006824:Hybridization, Genetic / Q000235:genetics*; D018895:Microsatellite Repeats; D012275:Oryza / Q000235:genetics*