%0 Journal Article %A Cao Liyong %A Shen Zongtan %T Studies on Earliness of Indica-Japonica Hybrid Rice %D 1997 %R %J Chinese Journal OF Rice Science %P 187-189 %V 11 %N 3 %X The growth period duration of indica-japonica hybrid rice is often very long, which made it difficult to select fine suitable crosses for double seasonal hybrid rice. Using male sterile line Zaoxian A with a dominant earnness gene as a parent could reduce growth period duration for about 17 days, while grain yield might not decrease significantly. %U http://www.ricesci.cn/EN/abstract/article_1331.shtml