晚霜冻胁迫后冬小麦株高降低及其与籽粒产量关系

武永峰, 胡新, 任德超, 史萍, 游松财

Reduction of Plant Height in Winter Wheat and Its Relationship with Grain Yield Under Late Frost Stress

YongFeng WU, Xin HU, DeChao REN, Ping SHI, SongCai YOU

表7 逐步回归模型中各株高构成因素的直接通径系数

Table 7 Direct path coefficients of plant height’s components based on stepwise regression model

试验 Experiment 入选自变量的直接通径系数 Direct path coefficient of entered independent variable 显著性水平 Significant level (P) 穗长 EL 穗下节间长 PL 倒二节间长 PIL 倒三节间长 AIL 倒四节间长 FIL 试验1 Exp.1 — — 0.459 0.483 — < 0.001 试验2 Exp.2 0.116 0.297 0.252 0.401 0.529 < 0.001 试验3 Exp.3 0.116 0.202 0.424 0.488 0.172 < 0.001 试验4 Exp.4 0.245 0.132 0.426 0.251 0.304 < 0.001 试验5 Exp.5 0.176 0.270 0.534 0.183 0.362 < 0.001 试验6 Exp.6 0.079 0.261 0.571 0.186 0.329 < 0.001