Description:
Originally derived from a C3 population of scab-resistant gene pool generated by intermating among hybrids and progenies of 75 crosses with five agronomic parents (Yangmai 4, Ningmai 3, Zhemai 1, Qianjiang 1 and Wanjian 7909) crossed to each of 15 scab-resistant and/or complementary parents (Sumai 3, Ning 7840, Wangshuibai, Whengzhouhongheshang, Fanshaxiaomai, Emai 9, Zhen 7495, Jinzhou 1, Xiangmai 1, Nobeokabouzu-Komogi, Shinchunaga, Qianhuan 803, 089xAvrora, Frontana and Veery), with the aid of a dominant male-sterile gene Ta1 (ms2), and bulking the seeds from the male-sterile plants, followed by recurrent selection.