绵阳26号小麦丰产稳产性研究

Studies on Stability of Wheat Variety of Mianyang 26

用AMMI模型对绵阳26号小麦的丰产、稳产性进行分析,发现其产量显著高于对照品种,并且具有稳产、适应性广、综合性状好等特性。其高产稳产的主要原因之一是穗、粒、重自身水平高,二是源、流、库协调,三是具有良好的冠层结构。产量构成因素中,千粒重和有效穗对绵阳26号的产量贡献和影响最大。

The yield stability and high yield of wheat of Mianyang 26 were analysed by using AMMI model. The results show that the yield of Mianyang 26 is higher than CK, and it has superiority of wide regional, adaption, high and stable yield. The reasons of wide regional adaption, high and stable yield are: 1.The effective spikes, kernal per spike, and the 1000grain weight are high. 2.Source, sink and transport coordinate and balance. 3.It has good structure of crown. The effective spikes, the 1000grain weight as compared with other yield components, make more contribution and have more influence on the yield.