【摘要】 R8 99是湖南省永州市农科所用湘早籼 13号与To974杂交后定向选育而成的早籼恢复系 ,具有恢复力强、抗稻瘟病、米质优、制种产量高等特点。R899所配系列组合表现产量高 ,稳产性好 ,米质较优 ,生育期适宜 ,适应性广。其中Ⅰ优 899和金优 899于2 0 0 4年 2月通过了湖南省品种审定更多还原

【Abstract】 R899, developed from the cross between Xiangzaoxiang 13 and To974 by the Yongzhou Agricultural Research Institute of Hunan Province, is a new early cropping indica restorer line in rice. It is characteristic of strong restoring ability, good blast resistance, fine grain quality and high hybrid seed yield. The serial hybrid combinations of R899 showed high and stable yield, good grain quality, suitable maturity and wide adaptability. Among them, Ⅰ You 899 (You Ⅰ A/R899) and Jinyou 899 (Jin 23A/R899) were certified to release to commercial production in Hunan Province in February, 2004.更多还原