关键词: 香味, 优质, 雄性不育系, 杂交水稻

Abstract: The male fertile plants originated from Xiang xiang 2A were crossed with D90A, and backcross technology was used. In this process, minor restorer genes and minor temperature sensitive genes were eliminated by examination of pollen sterility of each plant in different month in every generation. Therefore, good quality aromatic male sterile line Chuanxiang 28A with D type sterile cytoplam have been bred. Its chalkness grains percentage is 18 times lower than one of Zhengshan 97A, area of chalkness less 7.5 times; rice grains are strong aromatic. The apperance and eating quality of hybrids are also very good. Up to now, some combinations with high yield and good quaility characteristics have been screened by using Chuanxiang 28A. Xing you No.1 passed hybrid rice reginal trail in Sichuan in 1997. Chuan xiang 28B as superior quality germplasm was adopted in the programme of grain properties improvement of maintainer lines in hybrid rice.

Key words: AROMA, GOOD QUALITY, MALE STERILE LINE, HYBRID RICE RICE