MR365的香味遗传及在杂交稻育种中的利用

Inheritance of Aroma of MR365 and Its Use in Hybrid Rice Breeding

以MR3 65及其作香味供体育成的香稻不育系湘香 2号A、新香A、湘香 2号S与V2 0B、V41B、珍汕 97B、明恢 63等非香亲本杂交 ,采用KOH溶液法测定杂交组合F1 、F2 、B1 F1 植株和F2 米粒的香味表现 ,结果表明 ,MR3 65的香味遗传受 1对隐性核基因控制。在杂交水稻育种中 ,利用MR3 65育成了几个香稻不育系 ,并选配出一批香型杂交稻组合 ,其中香优 63、新香优 77、新香优 80等高产优质组合已通过省级审 (认 )定 。

The inheritance of aroma of MR365 was studied by crossing MR365 and its derivative aromatc male sterile lines Xiangxiang 2 A, Xingxiang A and Xiangxiang 2 S to non-aromatic lines V20B, V41B, Zhenshan 97B, Minghui 63, etc. Based on the performance of aroma tested by KOH solution method in plants of the generations of F 1, F 2, B 1F 1 and in kernels of F 2 generation, the aroma was controlled by a pair of recessive nuclear genes. In hybrid rice breeding, several aromatic MS lines have been developed from MR365, and a group of hybrid combinations mated with these aromatic MS lines show both high yielding ability and good grain quality with aroma, among which Xiangyou 63, Xingxiangyou 77 and Xingxiangyou 80 have been registered and released to commercial production, and show a very good prospect.