小麦新品种绵阳26号主要性状与产量的关系

The Relationship Between Yield and Main Components of New Wheat Variety Mianyang 26

对８７个试验点的资料分析表明，多抗、丰产、优质、广适小麦新品种绵阳２６号的主要性状与产量的回归方程为：ｙ＝－１０８４．３３２１＋５．２５６４ｘ１＋９．０１４２ｘ２＋５．２４８６ｘ３＋８．３７９６ｘ４＋６．３６２７ｘ５。偏回归及偏相关分析结果，产量构成因素中，千粒重、有效穗对产量的贡献和影响最大；千粒重、有效穗、穗粒数之间为负相关，存在不同程度的制约关系。稳定千粒重，主攻穗数和穗粒数的提高，是发挥绵阳２６号高产潜力的决定因素。

The analysis of multiple correlations and regression between the yield and its main components of multi resistance to diseases high yield, good quality wheat: Mianyang 26, basing on the data from 87 experiments showed that Mianyang 26 main characters all linerly positively correlate to yield and multiple regression equation of yield to its component was y=-1084.3321+5.2654x 1+9.0142x 2+5.2486x 3+8.3796x 4+6.3627x 5 . The analysis of partial regression and partial correlation showed that 1 000 grain weight and the effective spikes as compared with other yield components had more contribution and influence on the yield. Due to the negative correlation between the 1000 grain weight and the effective spikes, the number of kernel per spike, pay attention to keep 1000 grain weight and increase the number of spikes and the kernel per spike was a difinited factor made Mianyang 26 higher yield.