Breeding and Application of Jinliangyou 289,a New Two-line Early Hybrid Rice Combination with Good Grain Quality

Jinshan S-2,a new PTGMS line with low critical temperature and good grain quality,was developed by crossing two PTGMS lines 8-1S and Xiang 125S with complementary characteristics through pedigree selection combined with anther culture.Crossing it with Zaohui 89,a new two-line early hybrid rice combination,Jinliangyou 289,was developed and it was characterized with both high yield and good grain quality.It yielded an average of 7.14 t/hm~2 in two years(2003 2004) of the regional yield trials for quality early rice of Fujian Province,13.6% higher(significant at 1% level) than that of the check Jiahezaozhan.Consequently,it was registered and released for commercial production in Fujian Province in 2005.