论文部分内容阅读
对87个试验点的资料分析,绵阳26的主要性状与产量的回归方程为:y=-1084.3321+5.265x1+9.0142x2+5.2486x3+8.3796x4+6.3627x5。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的产量贡献和影响最大(b’4=1.2769.b’2=1.1272,R2y0=0.7287,R4y0=005689);而千粒重、有效穗、穗粒数之间为负相关,存在着不同程度的制约关系。在本资料现有产量的基础上,稳定千粒重,主攻穗数和穗粒数的提高,是发挥绵阳26高产潜力的决定因素。
The data of 87 experimental sites showed that the regression equation of main characters and yield of Mianyang 26 was: y = -1084.3321 + 5.265x1 + 9.0142x2 + 5.2486x3 + 8.3796x4 + 6.3627x5. By partial regression and partial correlation analysis, among the components of grain yield, grain weight and effective spike contributed most to the yield of Mianyang26 (b’4 = 1.2769.b’2 = 1.1272, R2y0 = 0.7287, R4y0 = 005689). However, there was a negative correlation between 1000-grain weight, effective panicles and grains per spike, with different degrees of restriction. On the basis of the current output of this data, stabilizing the 1000-grain weight, increasing the number of main spikes and grains per spike is the determining factor for the potential of high-yielding in Mianyang 26.