甜椒育种材料N1345的疫病抗性遗传分析  

Inheritance of Resistance to Phythophtora Blight in Sweet Pepper Line N1345

作　　者：张晓芬[1] 韩华丽[1] 陈斌[1] 耿三省[1] 耿利华[1] 

机构地区：[1]北京市农林科学院蔬菜研究中心,北京100097

出　　处：《植物遗传资源学报》2011年第5期816-819,共4页Journal of Plant Genetic Resources

基　　金：国家科技支撑计划(2009BADB8B01);北京市科技计划(D08070500690803);北京市常规育种财政专项

摘　　要：阐明了以甜椒N1345为抗原的疫病抗性遗传机制,为甜辣椒抗疫病新品种选育提供依据。通过稳定高抗疫病甜椒育种材料N1345,与高感疫病辣椒材料N1308构建的P1、P2、F1、B1、B2、F2六个世代,应用植物数量性状主基因+多基因联合分离分析方法,进行了疫病抗性遗传分析。结果显示,以甜椒N1345为抗原的疫病抗性由2对加性-显性-上位性主基因控制(B-1-1),两主基因加性效应、显性效应均相等,主基因遗传率在B1、B2和F2世代分别为63.43%、82.32%和83.46%。The inheritance of resistance to phythophtora blight of N1345 is important for pepper breeding resistant to phythophtora blight. Using the model of major gene plus polygene of quantitative traits, a joint analysis of six-generations from a sweet pepper line N1345 highly resistant to phythophtora blight and a highly susceptible hot pepper line N1308 was performed. The resistance to phythophtora of N1345 was shown to be controlled by two ma- jor genes （B -1 -1 ） with equal additive and dominant effects,and the major genes heritabilities of B1 ,B2 and F2 were 63.43% ,82.32% and 83.46% , respectively.

关 键 词：甜椒育种材料N1345 疫病 主基因+多基因遗传 

分 类 号：S641.3[农业科学—蔬菜学]