大麦种质资源成株期抗旱性鉴定及抗旱指标筛选

徐银萍,潘永东,刘强德,姚元虎,贾延春,任诚,火克仓,陈文庆,赵锋,包奇军,张华瑜

Drought resistance identification and drought resistance indexes screening of barley resources at mature period

Yin-Ping XU,Yong-Dong PAN,Qiang-De LIU,Yuan-Hu YAO,Yan-Chun JIA,Cheng REN,Ke-Cang HUO,Wen-Qing CHEN,Feng ZHAO,Qi-Jun BAO,Hua-Yu ZHANG

表6 供试大麦种质各指标主成分的特征向量及贡献率

Table 6 Eigenvectors and contribution rates of principal components of all indexes in tested barley germlasm

指标 Index 因子载荷 Factor loading F1 F2 F3 F4 F5 株高 PH 0.423 -0.631 0.728 -0.076 0.240 穗长 EL -1.420 0.407 -0.032 0.026 -0.731 分蘖数 TN 0.580 -0.020 -0.234 -0.424 -0.120 单株粒数 GNPP 0.214 -0.252 0.272 -0.284 0.661 单株粒重 GWPP 0.259 0.049 -0.513 0.917 0.324 穗粒数 KNPS -0.246 -0.055 0.821 0.192 -0.097 千粒重 TGW -0.205 -0.049 0.153 0.555 -0.066 产量 Y -0.202 0.662 -0.116 -0.190 1.392 特征根 Characteristic root 3.107 1.267 0.963 0.802 0.697 贡献率 Contribution rate (%) 39.46 15.68 11.96 9.94 8.38 累计贡献率 Cumulative contribution (%) 39.46 55.27 65.33 77.21 86.39 因子权重 Factor weight 0.453 0.189 0.135 0.109 0.103