三种外源植物生长调节物质对玉米幼苗耐寒性的影响

金梓浩, 赵文清, 王芳, 王威, 彭云玲, 常芳国

Effects of Three Exogenous Plant Growth Regulators on the Cold Tolerance of Maize Seedlings

Jin Zihao, Zhao Wenqing, Wang Fang, Wang Wei, Peng Yunling, Chang Fangguo

表3 3种外源物质处理综合指标的特征值及贡献率

Table 3 Eigenvalues and contribution rates of three comprehensive indexes of exogenous material treatments

外源物质Exogenous substance 主成分PCA 特征值Eigenvalue 贡献率Contribution rate (%) 累计贡献率Cumulative contribution rate (%) 5-ALA CI (1) 4.792 59.894 59.894 CI (2) 2.058 25.728 85.622 MeJA CI (1) 4.975 62.186 62.186 CI (2) 1.646 20.572 82.757 SL CI (1) 5.073 63.413 63.413 CI (2) 1.975 24.693 88.106