辣椒株高主基因+多基因混合遗传模型分析  

Genetic Analysis of Plant Height Trait in Pepper with Major Gene Plus Polygene Mixed Model

作　　者：庞欣[1,3] 郭勤卫 张婷 刘慧琴 刘佳 俞佳虹 宋秋平 万红建 PANG Xin;GUO Qinwei;ZHANG Ting;LIU Huiqin;LIU Jia;YU Jiahong;SONG Qiuping;WAN Hongjian(Horticultural Science and Technology,Suzhou Polytechnic Institute of Agriculture,Suzhou 215008,Jiangsu,China;Quzhou Institute of Agricultural and Forestry Sciences,Quzhou 324003,Zhejiang,China;State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products,Institute of Vegetables,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,Zhejiang,China)

机构地区：[1]苏州农业职业技术学院园艺科技学院,江苏苏州215008 [2]衢州市农林科学研究院,浙江衢州324003 [3]省部共建农产品质量安全危害因子与风险防控国家重点实验室,浙江省农业科学院蔬菜研究所,浙江杭州310021

出　　处：《中国蔬菜》2023年第11期80-86,共7页China Vegetables

基　　金：国家自然科学基金项目(32100302,32260769,31960601);2022年江苏高校“青蓝工程”中青年学术带头人培养项目,浙江省农业(蔬菜)新品种选育重大科技专项(2021C02065);浙江省重点研发计划项目(2021C02052);内蒙古自然科学基金(2021MS03106,2021MS03071);乌兰察布市基础研究项目(2021JC202)。

摘　　要：株高是辣椒重要农艺性状之一,直接影响辣椒的抗倒性和丰产性。为明确辣椒株高的遗传规律,以株高较矮的B1-2和株高较高的D50为亲本,采用植物数量性状主基因+多基因混合遗传模型方法对P1、P2、F1、B1、B2和F26个世代的株高进行了遗传分析。结果表明,辣椒株高最适合遗传模型符合E-1模型,即受2对加性-显性-上位性主基因+加性-显性多基因控制。株高的2对主基因加性效应相等,均为3.4087,显性效应值分别为1.3698和-0.7346。B1、B2和F2分离群体中主基因遗传率分别为34.18%、67.48%、66.45%,多基因遗传率分别为46.84%、12.85%、21.99%。试验结果表明,辣椒株高受主基因和多基因共同控制,受环境影响较小。Plant height is one of the important agronomic characters in pepper,which directly affects lodging resistance and yield.To explore the genetic characteristics on plant height in pepper,a dwarf inbred line‘B1-2’was crossed a tall inbred line‘D50’,and the major gene plus polygene mixed genetic model was carried out to conduct a genetic analysis for 6 generations(P_(1),P_(2),F_(1),B_(1),B_(2) and F_(2)).The results indicated that the most suitable genetic model of pepper plant height is E-1(two pairs of additive-dominant-epistatic major genes+additive-dominant polygenes).Additive effect values of the two pairs of major genes of plant height were both 3.4087,and the dominant effect values were 1.3698 and-0.7346,respectively.The inheritability of major genes was 34.18%,67.48%,66.45%in B1,B2 and F_(2),and the inheritability of polygene was 46.84%,12.85% and 21.99%,respectively.In this study,the plant height was genetically controlled jointly by major genes and polygenes,and the environment showed little effect.

关 键 词：辣椒 株高 主基因+多基因混合遗传模型 遗传分析 

分 类 号：S641.3[农业科学—蔬菜学]