152份向日葵重组自交系苗期抗旱性的鉴定与评价

周子超, 侯建华, 甄子龙, 石慧敏

Drought-Resistance Identification and Evaluation of 152 Sunflower Recombinant Inbred Lines (RILs) at Seedling Stage

Zichao Zhou, Jianhua Hou, Zilong Zhen, Huimin Shi

表4 各指标抗旱系数与综合抗旱隶属函数值线性回归模型

Table 4 The linear regression models with drought-resistance coefficient as dependent variable and the comprehensive drought-resistance subordinate function value as predictive variable

回归变量Regression variable 回归模型Regression model R2 电导率Electrical conductivity y=0.3771x-0.0220 0.9993 根表面积Root surface area y=0.2708x-0.2707 0.9995 根冠比Root-shoot ratio y=0.0655x-0.0037 0.9995 根长Root length y=0.3795x-0.2501 0.9996 根体积Root volume y=0.1800x-0.0176 0.9989 SPAD值SPAD value y=0.9363x-0.2073 0.9991 叶面积Leaf area y=0.8528x-0.0510 0.9991 叶片相对含水量 Relative water content of leaves y=1.2755x-0.5599 0.9992 株高Plant height y=0.4151x-0.2117 0.9987