小麦×玉米杂交得胚率的遗传分析  

Genetic Analysis of Embryo Production Frequency in Wheat × Maize Cross

作　　者：刘琨[1] 宁波[1] 李宏生[1] 李绍祥[1] 顾坚[1] 赵红[1] 杨木军[1] 

机构地区：[1]云南省农业科学院粮食作物研究所,云南昆明650205

出　　处：《西南农业学报》2014年第2期491-494,共4页Southwest China Journal of Agricultural Sciences

基　　金：云南省应用基础研究重点项目(2010CC001);国家863计划子课题(2011AA10A106);云南省重点新产品开发计划(2012BB015)

摘　　要：以小麦杂交组合C49S-87/01Y1-1069的DH群体为材料,利用植物数量性状主基因+多基因混合遗传模型对小麦×玉米杂交得胚率的遗传效应进行分析。结果表明,小麦×玉米杂交得胚率受两对显性上位主基因和多基因控制,其主基因效应分别为1.95和6.69,多基因效应为2.80;主基因遗传率为72.09%,说明小麦材料间得胚率的差异主要受基因型影响,但非遗传因素也不可忽视,尤其是对那些得胚率低的小麦材料。A DH population derived from C49S-87/01Y1-1069 was used to analyze the inheritance of wheat haploid embryo production frequency （EPF） in wheat × maize cross with the mixed major gene plus polygene genetic model of quantitative traits.The results showed that the EPF of wheat × maize cross was controlled by two dominant epistatic genes and polygene,with the gene effects of 1.95 for the first major gene,6.69 for the second one and 2.80 for the polygene.The heritability of major genes was as high as 72.09 ％,suggesting that the differences of EPF among wheat materials were mainly influenoed by genotype.However,non-genetic factors were still important,especially for wheat materials with low EPF.

关 键 词：小麦×玉米 单倍体胚得胚率 DH群体 主基因+多基因混合遗传模型 

分 类 号：S513[农业科学—作物学] S512