小麦种质资源成株期氮效率评价及筛选

赵瑞,张旭辉,张程炀,郭泾磊,汪妤,李红霞

Evaluation and Screening of Nitrogen Efficiency of Wheat Germplasm Resources at Mature Stage

ZHAO Rui,ZHANG XuHui,ZHANG ChengYang,GUO JingLei,WANG Yu,LI HongXia

表3 小麦氮效率相关性状的主成分分析

Table 3 Principal component analysis of nitrogen efficiency related wheat traits

性状 Trait 耐低氮性（PI-L） Low nitrogen tolerance (PI-L) 耐高氮性（PI-G） High nitrogen tolerance (PI-G) 因子1 Factor1 因子2 Factor2 因子3 Factor2 因子4 Factor4 因子1 Factor1 因子2 Factor1 因子3 Factor1 因子4 Factor1 株高PH 0.645 -0.085 -0.425 0.465 -0.009 0.586 0.366 0.218 穗长SL 0.744 -0.338 0.036 0.209 0.301 0.464 -0.413 0.547 旗叶长FLL 0.694 -0.288 -0.134 0.449 0.251 0.742 0.065 0.330 旗叶宽FLW 0.303 0.223 0.712 0.411 0.557 0.152 -0.375 0.059 茎粗SD 0.670 -0.383 0.173 -0.249 0.573 -0.058 -0.639 -0.088 可育小穗数FSN 0.822 -0.264 -0.080 -0.311 0.678 0.373 -0.109 -0.548 穗粒数GNPS 0.475 -0.291 0.460 -0.181 0.352 0.580 0.506 -0.132 千粒重TKW 0.620 0.633 -0.071 -0.234 0.709 -0.490 0.356 0.258 粒长GL 0.242 0.635 0.196 0.140 0.554 -0.407 -0.015 0.310 粒宽GW 0.506 0.660 -0.163 0.065 0.679 -0.469 0.311 0.180 单穗产量GWPS 0.883 0.193 -0.074 -0.345 0.895 0.070 0.141 -0.321 特征值Eigenvalue 4.374 1.833 1.030 1.020 3.448 2.243 1.370 1.083 贡献率Contribution rate (%) 39.766 16.661 9.361 9.275 31.348 20.387 12.452 9.850 累计贡献率Accumulated contribution (%) 39.766 56.427 65.788 75.064 31.348 51.736 64.187 74.037