胡麻RIL群体苗期抗旱性状的主基因+多基因遗传分析  

Genetic analysis of drought resistance using major gene plus polygene methods of oil flax RILs population at seedling stage

作　　者：王斌[1] 王利民[1] 张建平[1,2] 谢亚萍[1] 牛早霞 赵利[1] WANG Bin;WANG Li-min;ZHANG Jian-ping;XIE Ya-ping;NIU Zao-xia;ZHAO Li(Crop Research Institute,Gansu Academy of Agricultural Sciences,Lanzhou,Gansu 730070,China;College of Agronomy,Gansu Agricultural University,Lanzhou,Gansu 730070,China)

机构地区：[1]甘肃省农业科学院作物研究所,甘肃兰州730070 [2]甘肃农业大学农学院,甘肃兰州730070

出　　处：《干旱地区农业研究》2018年第5期14-20,共7页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金地区基金(31760397;31660368);国家特色油料产业体系胡麻种质资源评价与创新(CARS-14-1-03);甘肃省农业科学院中青年基金(2017GAAS70)

摘　　要：以抗旱品种定亚17号与抗旱敏感品种天亚3号构建的重组自交系群体为材料,采用数量性状的主基因+多基因遗传模型分析方法对胡麻苗期株高、根鲜重、茎鲜重、根干重、茎干重、根长、叶干重、叶鲜重等8个性状的抗旱系数进行遗传模型分析。结果表明,株高、根鲜重、茎鲜重、根干重、茎干重的最适遗传模型为2MG-Inhibiting,受2对抑制性主基因+加性多基因控制。根长、叶干重的最适遗传模型为3MG-CEA,受3对独立主基因+加性多基因控制。叶鲜重的最适遗传模型为4MG-CEA,受4对独立主基因控制。8个性状主基因遗传率在9.59%～50.96%之间。The recombinant inbred lines(RILs)constructed by Dingya No.17 and Tianya No.3.Major gene plus polygene mixed inheritance model was explored to perform genetic analysis of eight traits with the RILs.The results indicated that optimal genetic model of plant height,root fresh weight,shoot fresh weight,root dry weight and shoot dry weight was 2MG-Inhibiting,controlled by two inhibiting major genes plus additive polygene mixed inheritance.The optimal genetic model of root length and leaf dry weight was 3MG-CEA,controlled by three independent major genes plus additive polygene mixed inheritance.The optimal genetic model of fresh leaf weight was 4MG-CEA,controlled by four independent major genes.In RILs populations,the major gene heritability of eight traits was at 9.59%～50.96%.

关 键 词：胡麻 重组自交系群体 苗期抗旱性 主基因+多基因遗传模型 遗传分析 

分 类 号：S332.1[农业科学—作物遗传育种]