籼型三系杂交稻及亲本感光特性的研究

Photo sensitivity of the three-line indica hybrid rice and its parents

在早季条件下进行短日遮光处理 ,对 12个恢复系及其与多个不育系所配的 44个杂交组合的感光和抑制感光特性进行鉴定分析。结果表明 ,所有的供试材料都表现出不同程度的感光性 ;杂交双亲的感光特性对 F1 的遗传较为复杂 ;龙特浦 A不育系具有抑制感光的特性 , - 32 A不育系具有增强 F1 感光的特性 ;在育种实践中 ,充分利用像龙特浦 A这类具有抑制感光特性的不育系 ,可望实现杂交稻的超高产。

Under the short\|day treatment in the early season,the photo\|sensitivity and restrained photo\|sensitivity of twelve restore lines and forty\|four hybrid progenies derived from the combinations of twelve restore lines mating several sterility lines were identified and analyzed.The results showed that all experimental materials had photo\|sensitivity.Inheritance of F 1 photo\|sensitivity from their parents' was more complicated.Longtepu A had the character of restrained photo\|sensitivity,and Ⅱ\|32A could strengthen its F 1 photo\|sensitivity.Making full use of such sterility lines as Longtepu A which had restrained photo\|sensitivity is hopeful to attain super high\|yield.