利用GGE双标图分析花生品质性状的基因型-环境互作

花生品质性状的稳定性和基因型-环境互作研究，可为花生品质育种及不同生态区域花生品种的选择提供参考依据。本研究利用GGE-biplot工具，对我国黄淮海花生主产区16个花生品种两年间的品质性状进行了综合分析，包括含油量、油酸、亚油酸、棕榈酸和蛋白质含量等。结果显示，5个品质性状均有较高的GGE总变异值（主成分因素PC1和PC2变异的总和），变幅在61.5%-79.9%之间，以含油量的GGE变异值最低，为61.5%，油酸含量的GGE变异值最高，为79.9%。16个花生品种2年间部分品质性状表现较为一致，其中濮花9519的含油量表型值波动最小，山花9号的亚油酸含量表型值波动最小，开农49是油酸含量表型值最为稳定的品种，天府23号是棕榈酸含量和蛋白质含量表型值最为稳定的品种。初步明确了徐州和濮阳分别适合高油花生和高油酸花生种植，确定了不同生态类型试点下较适合种植的品种，为花生品种推广应用提供了参考。

Genotype × environment interactions for the quality traits of peanut varieties based on GGE biplot analysis

Studies on variety stability and genotype-environment interaction (GEI), with respect to the quality characters of peanut, which can provide reference for peanut quality breeding and variety selection in different ecological regions. In this study, five quality traits, including total oil content, oleic acid, linoleic acid, palmitic acid,and total protein content of 16 peanut cultivars, which mainly planted in Huang-Huai-Hai area, were evaluated by using GGE-bioplot with two years replication. The results showed that each quality trait exhibited high variation values (the sum of PC1 value and PC2 value), varied from 61.5% to 79.9%. The lowest variation value (61.5%) was observed in the quality of total oil content while the oleic acid content showed the highest GGE variation value (79.9%). The 16 tested peanut varieties showed stable quality trait partially during the two years, of which‘Pu 9519’had the least phenotypic variation of total oil content,‘Shanhua 9’had the least phenotypic variation of linoleic acid content,‘Kainong 49’almost with no phenotypic variation of oleic acid content,‘Tianfu 23’was considered as the most stable variety of palmitic acid content and protein content. Among the 5 regions, Xuzhou City and Puyang City were most representative of the cities in terms of the cultivation of peanuts with high oil content and oleic acid content, respectively. Meanwhile, varieties with good adaptability had also been identified under different ecological environments. Those results provide valuable references for further extension of peanut varieties.