花生蔗糖含量的遗传和环境稳定性分析  

Genetic and environmental stability analysis of peanut sucrose content

作　　者：王志慧[1] 张月 陈玉宁[1] 淮东欣[1] 王欣 康彦平[1] 晏立英[1] 姜慧芳[1] 雷永[1] 廖伯寿[1] WANG Zhi-hui;ZHANG Yue;CHEN Yu-ning;HUAI Dong-xin;WANG Xin;KANG Yan-ping;YAN Li-ying;JIANG Hui-fang;LEI Yong;LIAO Bo-shou(Key Laboratory of Biology and Genetic Improvement of Oil Crops,Ministry of Agriculture and Rural Affairs,Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences,Wuhan 430062,China)

机构地区：[1]中国农业科学院油料作物研究所/农业农村部油料作物生物学与遗传育种重点实验室,湖北武汉430062

出　　处：《中国油料作物学报》2023年第5期879-886,F0002,共9页Chinese Journal of Oil Crop Sciences

基　　金：国家自然科学青年基金(32201770);湖北省重点研发计划项目(2021BBA077);湖北省自然科学基金面上项目(2022CFB332);中国农业科学院科技创新工程项目(CAAS-ASTIP-2021-OCRI)。

摘　　要：花生籽仁蔗糖含量是食用花生的重要品质指标。本研究利用中花16和W.h3132构建的重组自交系群体(F_(8)-F_(10))的蔗糖含量开展遗传模型分析,同时基于双亲和其他不同类型花生品种在不同环境下蔗糖含量的变异系数分析其环境稳定性。结果显示在该群体F_(8)-F_(10)中均检测到4对主效基因-加性-上位性为最优候选模型,主效基因遗传率为80.8%~96.1%,表明花生蔗糖含量具有较高的遗传率;第1对和第2对主效基因对表型的解释率较高,分别为30%~52.2%和25.1%~29.6%,第3对和第4对主效基因的表型解释率较小。基于中花16等9个不同类型花生品种在5个不同环境下的蔗糖含量稳定性分析,发现其变异系数为17.39%~39.08%,不同材料的稳定性存在差异。本研究表明花生蔗糖含量是遗传率较高的数量性状,同时受到环境因素的影响,筛选多环境下蔗糖含量稳定的高蔗糖种质对于品质改良和功能基因发掘具有重要意义。Sucrose content of peanut seeds is an important quality indicator for edible peanuts.In this study,we analyzed the main gene plus multigene genetic model for sucrose content based on peanut recombinant inbred lines from continuous generation populations,and investigated the effects of environmental factors on sucrose content based on the investigation of phenotypic variation of different varieties in various geographical locations.The results revealed that 4 main genes plus additive-epistasis(4MG-AI)was the optimal model in all three generations of the RIL population.The heritabilities of the main genes ranged from 80.8%to 96.1%,indicating a high degree of heritability for peanut sucrose content.Among the four main genes,the 1st and the 2nd main gene explained the phenotypes 30%-52.2%and 25.1%-29.6%,respectively,while the third and fourth pairs of main effect genes explained the phenotypes at smaller rates.Based on the stability analysis of sucrose content of nine peanut materials,including Zhonghua 16,in five different environments,it was found that the coefficients of variation ranged from 17.39%to 39.08%,and that the stability of different materials varied.The environmental stability of sucrose content was varied across different varieties.This study showed that peanut sucrose content is a quantitative trait with high heritability,but it is also affected by environmental factors.The germplasms or varieties with high sucrose content and environmental stability were suggested to be further screened for genetic breeding and functional gene discovery in future breeding.

关 键 词：花生 蔗糖含量 遗传分析 环境稳定性分析 

分 类 号：S565.2[农业科学—作物学]