薄皮甜瓜果实单瓜种子数主基因+多基因遗传分析  

Mixed Major Gene+Polygene Genetic Analysis of Seed Number Per Fruit in Oriental Melon

作　　者：陈英达 李怡冰 潘玉朋[2] 郭静茹 徐蒙 刘振宁 张宁 CHEN Yingda;LI Yibing;PAN Yupeng;GUO Jingru;XU Meng;LIU Zhenning;ZHANG Ning(College of Agriculture and Forestry,Linyi University/Shandong Province University Characteristic Laboratory of Crop Molecular Design and Precision Breeding,Linyi Shandong 276000,China;College of Horticulture,Northwest A&F University,Yangling Shaanxi 712100,China)

机构地区：[1]临沂大学农林科学学院/山东省作物分子设计与精准育种高校特色实验室,山东临沂276000 [2]西北农林科技大学园艺学院,陕西杨凌712100

出　　处：《西北农业学报》2024年第12期2288-2294,共7页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：临沂大学博士人才科研启动项目(LYDX2020BS026);临沂大学大学生创新创业项目(51822388);山东省高等学校青创科技计划创新团队(2021KJ055);国家自然科学基金(32260778)。

摘　　要：为探究薄皮甜瓜果实单瓜种子数的遗传规律,本研究以薄皮甜瓜自交系M125(P_(1))为母本,M30(P_(2))为父本,构建6世代(P_(1)、P_(2)、F_(1)、F_(2)、B_(1)、B_(2))群体,采用主基因+多基因混合模型和多世代联合分析法对单瓜种子数进行遗传分析。结果表明,薄皮甜瓜单瓜种子数最优遗传模型为2对加性-显性-上位性主基因+加性-显性-上位性多基因(MX2-ADI-ADI),F_(2)群体主基因遗传率和多基因遗传率分别为80.2622%和16.2708%,表明单瓜种子数以主基因遗传为主。因此,在育种过程中对薄皮甜瓜单瓜种子数的选择适宜在较早世代进行。To explore the genetic pattern of seed number per fruit in oriental melon,the oriental melon inbred line M125(P_(1))and M30(P_(2))were used as parents to build the six-generation populations(P_(1),P_(2),F_(1),F_(2),B_(1),B_(2)),and the genetic analysis of seed number per fruit was performed using the major gene+multiplegene mixed model and multigeneration combined analysis of the six-generation populations.The results showed that the optimal genetic model of seed number per fruit was two pairs of additive-dominant-epistasis major genes+additive-dominant-epistasis polygenes(MX2-ADI-ADI)in oriental melon,and the heritability rates of major genes and polygenes were 80.2622%and 16.2708%,respectively,indicating that seed number per fruit was mainly controlled by the major genes.Therefore,selection for seed number per fruit should be made in early generations during the oriental melon breeding.

关 键 词：薄皮甜瓜 单瓜种子数 主基因+多基因 遗传分析 

分 类 号：S652[农业科学—果树学]