大豆ms1轮回群体品质改良效应与分离特性研究

Studies on quality improvement effect and separate character of soybean male serile(MS1) recurrent selection population

通过对引进的ms1轮回群体进行6年的基因丰富和轮回选择,形成了适宜当地生态类型区选择的LD基础群体。利用高蛋白、高油亲本对LD基础群体进行品质改良,进而形成高蛋白(db)和高油(gy)两个亚群体。改良后的高蛋白(db)亚群体平均蛋白质含量比基础群体增加1.18%,≥45%的个体占22.38%,高于基础群体10.99%;高油(gy)亚群体平均脂肪含量高于基础群体0.24%,≥20%的个体比基础群体增加11.05%。在品质改良的同时,ms1亚群体的开花期,成熟期,结荚习性、脐色、茸毛色等质量性状的分离范围广,分离比例趋于均衡,后代分离类型明显较常规杂交组合丰富。本文还结合ms1亚群体研究实践,讨论了大豆ms1群体育种的方法、关键技术及选择效果。

Two sub-population from the LD base population were constructed by 6 years gene enrichment and recurrent selection. For the db（high protein content） sub-population, the protein content was 1.18 % higher than that of the base population, and the individuals with more than 45 % protein content were 22.38 % and 10.99 % higher than that of the base population.For the gy（high oil content） sub-population, oil content was 0.24 % higher than that of the base population, and the individuals with more than 20 % oil content were 11.05 % higher than that of the base population. In addition,compared with the segregation population of general crosses in the flower date, mature date, pod type, hilum color and hair color,the two ms1 sub-population had larger separation and more types.