甘薯苗期耐盐性鉴定及其指标筛选

段文学,张海燕,解备涛,汪宝卿,张立明

Identification of Salt Tolerance and Screening for Its Indicators in Sweet Potato Varieties during Seedling Stage

Wen-Xue DUAN,Hai-Yan ZHANG,Bei-Tao XIE,Bao-Qing WANG,Li-Ming ZHANG

表3 各综合指标特征根、贡献率和特征向量

Table 3 Eigen value, contribution ratio, and eigen vector of comprehensive indexes (CIx)

项目 Item CI1 CI2 CI3 CI4 CI5 特征根 Eigen value 8.6185 1.2008 1.1091 1.0367 0.5274 贡献率 Contribution ratio 61.5606 8.5772 7.9219 7.4050 3.7674 累计贡献率 Cumulative contribution ratio 61.5606 70.1377 78.0597 85.4647 89.2321 特征向量 Eigen vector X1 0.3147 0.0425 -0.1932 0.1368 0.1386 X2 0.3092 0.1377 0.1058 -0.0449 0.1869 X3 0.3095 0.0180 -0.1334 0.0591 -0.0586 X4 0.2819 0.0376 0.1084 -0.4418 0.0333 X5 0.2477 0.1128 -0.2463 -0.3718 0.6375 X6 0.2756 -0.2629 0.3830 -0.1045 -0.0300 X7 -0.2737 -0.1865 0.2135 -0.2465 0.4086 X8 0.1871 -0.5779 -0.1393 0.4066 0.2228 X9 0.2646 0.3335 0.2197 -0.1753 -0.3389 X10 -0.2837 0.1796 0.2257 0.0216 0.0700 X11 -0.3230 -0.0103 0.0359 0.0757 0.1798 X12 0.1844 -0.1598 0.7166 0.1962 0.1313 X13 -0.2591 0.2681 0.1778 -0.0038 0.2789 X14 0.1642 0.5347 0.0620 0.5744 0.2652