论文部分内容阅读
对45个试验点的资料分析，多抗、丰产、优质、广适小麦新品种绵阳26的主要性状有效穗x1、穗粒数x2和千粒x3、单穗重x4与产量y的回归方程为：y＝－614．8425＋9.8683x1＋7.3223x2＋10．5315x3＋22．5748x4。经偏回归和偏相关分析，产量构成因素中，千粒重、有效穗对绵阳26产量的贡献和影响最大（b’3＝1．7435，b’1＝1．5372，R3y.＝0．7983，R1y＝0．6991）。在现有产量的基础上稳定千粒重，主攻穗数和穗粒数，是发挥绵阳26高产潜力的决定因素。
The data of 45 experimental sites showed that the regression equation of the main characters of panicle x1, panicle number x2 and thousand-grain x3, panicle weight x4 and yield y was: : Y = -614.8425 + 9.8683x1 + 7.3223x2 + 10.5315x3 + 22.5748x4. By partial regression and partial correlation analysis, among the components of grain yield, the effect of 1000-grain weight and effective panicle on the yield of Mianyang 26 was the most significant (b’3 = 1.7435, b’1 = 1.5372, R3y. = 0.7983, R1y = 0.6991). Stabilizing 1000-grain weight, main panicles and grains per spike on the basis of the existing yield is the determining factor for the high-yield potential of Mianyang26.