Qiyou 1025,an indica type early hybrid rice combination with mid-late mature and good grain quality
LIANG Man-ling, SU Xue-jun, CHEN Cai-hong, XUAN Qi-lin (Rice Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China)
Qiyou 1025 is a thermosensitive indica type early hybrid rice combination matched by MS line Qi A and restorer line 1025. Its growth duration in early season and late season in Nanning are about 130d and 112~114d, respectively. The combination performed with characteristics of : 3 ~ 3.3 million/hm 2of the effective panicles, 150~170 of the grain number per panicle, 80% ~ 90 % of the rearing rate, 18.5~19.5g of 1000-grains weight and good grain quality. The grain quality indexes, except the rate of chalk rice and the chalk degree, all are matched the national standards of 3 rd class. The combination was approved by Guangxi Crop Evaluation Council in Dec. 2001.