Rice Science ›› 2019, Vol. 26 ›› Issue (3): 195-198.DOI: 10.1016/j.rsci.2019.01.003

• Letters • Previous Articles    

Classification and Identification of indica P/TGMS Lines in China

Mengchen Zhang1, Shan Wang1, Jianfang Yan2, Shuiyong Sun1, Xin Xu1, Qun Xu1, Xiaoping Yuan1, Xinghua Wei1(), Yaolong Yang1()   

  1. 1State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, China
    2Seeds Administration Center of Zhejiang Province, Hangzhou 310016, China
  • Received:2018-10-15 Accepted:2019-01-08 Online:2019-05-28 Published:2019-01-25

Abstract:

SUMMARY Despite extensive studies on cultivated rice, the population structure and genetic diversity of the indica photoperiod- and thermo-sensitive genic male sterility (P/TGMS) lines in China remains unclear. Using 48 simple sequence repeat (SSR) markers, we genotyped a panel of 208 indica P/TGMS lines and confirmed three subgroups, named indica-I, indica-II and indica-III, in indica P/TGMS lines. Further diversity analysis indicated indica-II had the highest genetic diversity. The genetic differentiation between indica-II and indica-III was demonstrated as the largest among the three subgroups. Moreover, indica/japonica component identification was detected that five P/TGMS lines possess indica components less than 0.900. These results improve our knowledge on the genetic background for P/TGMS lines in China and will be beneficial for hybrid rice breeding programs.