淹水胁迫下玉米自交系苗期的形态生理差异

郑飞, 汪丽霞, 刘瑞响, 孔令杰, 陈艳萍, 袁建华, 崔亚坤

Morphological and Physiological Differences of Maize Inbred Lines at Seedling Stage under Waterlogging Stress

Zheng Fei, Wang Lixia, Liu Ruixiang, Kong Lingjie, Chen Yanping, Yuan Jianhua, Cui Yakun

表3 13个耐涝指标的主成分分析

Table 3 Principle component analysis on 13 waterlogging tolerance indexes

耐涝指数 Waterlogging tolerance index 因子1 Factor 1 因子2 Factor 2 因子3 Factor 3 因子4 Factor 4 φPSⅡ 0.21 -0.77 0.46 -0.02 NPQ -0.31 0.68 -0.54 0.08 SPAD 0.66 -0.31 0.14 0.38 叶片厚度Leaf thickness 0.22 -0.11 -0.15 0.89 叶面积Leaf area 0.77 0.09 -0.03 -0.29 株高Plant height 0.67 -0.21 0.02 -0.33 根长Root length 0.15 0.35 0.68 0.00 根数Root number 0.52 -0.05 -0.43 -0.22 根干物重Root biomass 0.74 0.58 0.23 0.06 茎干物重Stem biomass 0.83 -0.01 -0.22 -0.03 叶干物重Leaf biomass 0.93 -0.03 -0.15 0.07 总干物重Total biomass 0.95 0.21 -0.07 0.06 根冠比Root/shoot ratio 0.06 0.78 0.48 0.06 特征值Eigenvalue 4.96 2.34 1.56 1.20 贡献率Contribution rate (%) 38.15 17.97 11.97 9.20 累计贡献率 Cumulative contribution rate (%) 38.15 56.11 68.09 77.29