小麦新品种“绵阳26”主要性状与产量的关系

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 Relationship of Between the Yield and its Main Components in New Wheat Varity Mianyang 26

The analysis of multipul correlations and regression between the yield and its main components of multi - resistance to diseases, high yield, good quatity wheat: Mianyang 26, Based on the date from 87 experiments points.It was shown that Mianyang 26 wheat between the yield and its main charcters all linearly positevely correlate with yield and multople regression equation of yield to its componented:y = -1084. 3321 5. 2654x1 9. 0142x2 4. 2486x3 8. 3796x4 6. 3627x5The analysis of partial regression and partial correlation showed that 1 00-grain weight and the effective spikes as compared with other yield components was mor contribute and influence on the yield (b1' =1. 2769 R4y0 =0. 5689, b2' =1. 1272 R2y0=0. 7287 ). Due to the negative correlation between the 1000-grain weight and the effective spikes, the number of kernel per spike, likewise limited each other, therefor, under the condition steadied the 1000-grain weight of the yield attention to increased the number of spikes and the number of kernel per spike. It was a difinited factor made Mianyang 26 obtain higher yield.