辣椒白粉病抗性主基因+多基因混合遗传分析  

Genetic Analysisof Resistance to Powdery Mildew by Mixed Model of Major Genes Plus Polygenes in Chili Pepper

作　　者：张涛[1] 马正宝 张茹[2] 汪来田 王永富 黄立娟 郭娜纳 李伟 魏兵强[1] ZHANG Tao;MA Zhengbao;ZHANG Ru;WANG Laitian;WANG Yongfu;HUANG Lijuan;GUO Nana;LI Wei;WEI Bingqiang(College of Horticulture,Gansu Agricultural University,Lanzhou 730070,China;Vegetable Research Institute,Gansu Academy of Agricultural Sciences,Lanzhou 730070,China;Jiuquan Academy of Agricultural Sciences,Jiuquan Gansu 735099,China)

机构地区：[1]甘肃农业大学园艺学院,兰州730070 [2]甘肃省农业科学院蔬菜研究所,兰州730070 [3]酒泉市农业科学研究院,甘肃酒泉735099

出　　处：《西北农业学报》2024年第6期1122-1130,共9页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：甘肃省重点研发项目(21YF5NA091);兰州市人才创新创业项目(2021-RC-65);甘肃农业大学青年导师扶持基金(GAU-QDFC-2020-07);甘肃省农业科学院重点研发项目(2020GAAS17)。

摘　　要：辣椒白粉病是一种常见的真菌病害,该病严重影响辣椒生产。以辣椒白粉病高抗材料(NSR和NVD)为母本,高感材料(20c89、20c93)为父本,分别构建两组P_(1)、P_(2)、F_(1)、F_(2)四世代遗传群体(2021组和2022组),通过调查统计辣椒不同世代群体内单株的白粉病病情指数,利用植物数量性状主基因+多基因混合遗传分析法对辣椒白粉病抗性进行遗传分析。结果表明:两组群体辣椒白粉病抗性遗传均受两对加性-显性上位性主基因+加性-显性多基因控制,并且基因遗传效应和遗传力等参数在两组群体中表现出较高的一致性。2021组第1对主基因加性效应和显性效应值分别为12.7065和-34.7107,第2对主基因加性效应和显性效应值分别为-9.1706和-16.9432,主基因遗传率为86.11%;2022组第1对主基因加性效应和显性效应值分别为20.0431和-18.0682,第2对主基因加性效应和显性效应值分别为-1.0668和-6.0904,主基因遗传率为97.16%。Powdery mildew is a common fungal disease seriously affecting the production of chili pepper.In this study,two progenies of P_(1),P_(2),from F_(1),F_(2)of four generation genetic populations were constructed with materials highly resistant(NSR,NVD)to chili pepper powdery mildew as female parent and high susceptibility materials(20c89,20c93)as male parent.These progenies,named as Progenies 2021 and Progenies 2022,were investigated.The powdery mildew disease indexes of every individuals in different generation population were investigated,the genetic analysis of chili pepper powdery mildew was carried out using the mixed model of major gene plus polygenes.The results showed that the inheritance of the resistance to powdery mildew in the two progenies were controlled by two major additive-dominant epistatic genes and additive-dominant polygene.Genetic parameters such as genetic effect and variance showed high consistency in the two progenies.The values of additive effect and dominant effect of the first major genes in progenies 2021 were 12.7065 and-34.7107,respectively,the values of additive effect and dominant effect of the second major genes were-9.1706 and-16.9432,respectively,and the heritability of the major gene was 86.11%.The values of additive effect and dominant effect of the first major genes in progenies 2022 were 20.0431 and-18.0682,respectively,and the values of additive effect and dominant effect of the second major genes were-1.0668 and-6.0904,respectively,and the heritability of the major gene was 97.16%.

关 键 词：辣椒 白粉病 抗性 主基因+多基因 遗传分析 

分 类 号：S436.418.1[农业科学—农业昆虫与害虫防治]