Comparative Analysis between Triple Cross and Double Cross among Three Parents of Crop  

作物三亲本三交与三亲本双交对比分析（英文）

作　　者：欧行奇[1] 李新华[1] 乔红[1] 

机构地区：[1]河南科技学院农学系,河南新乡453003

出　　处：《Agricultural Science & Technology》2015年第6期1106-1109,共4页农业科学与技术（英文版）

摘　　要：In this paper, the triple cross and double cross were compared by analysing the characteristics of genetic variation in progeny of triple cross hybrid and double cross hybrid among three parents, based on the successful breeding practices of Beijing No.10. The results showed that the selection duration of double cross was one year shorter than that of triple cross. The F1 generations of single cross hybrids of double cross showed higher breeding value, and the multiple cross-ing timing of triple cross was more flexible. More wheat varieties have been bred by triple cross, instead of double cross. Moreover, the double cross has a disad-vantage of heavy workload.该文通过比较三亲本三交与三亲本双交杂种后代的遗传变异特点,并结合北京10号小麦良种选育成功的经典实例分析后认为,双交比三交的选择进程可能早一年,双交的单交F1育种价值较高,双交的复交时机比较灵活机动。又从采用三交比采用双交育成更多的小麦等作物品种的事实出发,同时也指出了双交也具有杂交工作量大的缺点。

关 键 词：Triple cross Double cross Selection process 

分 类 号：S334[农业科学—作物遗传育种]