摘要
新恢复系HR195是用早熟早籼品种与多个迟熟恢复系杂交,经定向培育而成的含有早熟基因的迟熟恢复系,具有下列特点:(1)自身表现迟熟,但所配系列组合表现早熟,这在其他迟熟恢复系中是少见的;(2)恢复力强;(3)杂种优势明显。HR195系列组合农艺性状优良,中抗稻瘟病、适应性较广,将早熟性和丰产性结合较好,适于多熟制地区的需要。
HR195, derived from multiple crosses of one early variety (Erjiuqin) and three late restorers (Taiyin 1, N Dao and Minghui 63), was developed by way of directional transferring of early gene maturity into late restorer. Its characteristics are: ①It is late in maturity, but its hybrids show earlier maturity, which occurs very scarcely in the existing late restorer lines. ②It has strong restoring ability with the seed set of its combinations above 85%~90% in general. ③Its hybrids show great heterosis. The grain yield of its combinations are between 7.5~8.5 t/hm 2 in general, 5%~15% higher than the controls.④The combinations of HR195 also show good agronomic characters, moderate resistance to blast and wide adaptability.
出处
《杂交水稻》
CSCD
北大核心
1997年第3期5-7,共3页
Hybrid Rice
基金
国家和四川省水稻育种攻关课题