耐低氮糜子品种的筛选及农艺性状的综合评价

陈凌,王君杰,王海岗,曹晓宁,刘思辰,田翔,秦慧彬,乔治军

Screening of Broomcorn Millet Varieties Tolerant to Low Nitrogen Stress and the Comprehensive Evaluation of Their Agronomic Traits

CHEN Ling,WANG JunJie,WANG HaiGang,CAO XiaoNing,LIU SiChen,TIAN Xiang,QIN HuiBin,QIAO ZhiJun

表4 11个指标的前5个主成分加权系数、主成分特征值、方差贡献率及累积贡献率

Table 4 Weighted coefficients, eigenvalues, variance contribution, cumulative variance contribution of first five principal components based on 11 index

指标 Index 主成分Principal component 因子1 Factor 1 因子2 Factor 2 因子3 Factor 3 因子4 Factor 4 因子5 Factor5 株高Plant height 0.233 0.273 -0.028 -0.483 0.441 穗长Panicle length 0.217 0.435 -0.311 -0.375 0.063 草重Straw weight 0.327 -0.079 0.290 0.226 0.206 单株穗重Panicle weight per plant 0.493 0.0005 0.096 0.169 -0.029 单株粒重Grain weight per plant 0.497 0.010 -0.039 0.154 -0.101 千粒重1000-grain weight -0.142 0.272 0.421 0.428 0.498 叶面积Leaf area 0.084 0.218 0.544 -0.292 -0.321 主茎节数Number of main-stem nodes -0.053 0.452 -0.175 0.337 -0.541 茎粗Stem diameter -0.098 0.503 -0.322 0.314 0.243 氮含量N content -0.126 0.389 0.448 -0.137 -0.188 氮吸收量N absorption 0.497 0.010 -0.039 0.154 -0.101 特征值Eigenvalues 3.654 1.440 1.292 1.006 0.950 方差贡献率Variance contribution (%) 33.219 13.089 11.742 9.143 8.632 累积方差贡献率Cumulative variance contribution (%) 33.219 46.308 58.050 67.193 75.825