小麦株高问题的探讨

为提高育种预见性和选择效率,对小麦株高问题进行了探讨。认为选育矮秆和半矮秆品种是现代小麦育种的发展趋势,分析了小麦品种过度矮化的不利影响和适度高化的有利作用。株高的理想范围不能一概而论,应根据生产条件和产量水平来确定。在适当控制株高的基础上,应着重提高茎秆质量和根量,注重合理群体组成及冠层结构的选配工作,进一步优化综合农艺性状,从而在更高的基础上实现形态性状的理想组合,才能提高产量潜力,实现产量的突破。

Study on Plant Height of Wheat

To enhance breeding predictability and selection efficiency,the problem of wheat height was discussed.Breeding of the dwarf and semi -dwarf varieties was the development tendency of modern wheat breeding.The negative impacts of over-dwarf and the beneficial effects of moderate height were analyzed. The ideal height range was not certain,which should be determined based on production conditions and yield level.On the basis of appropriate height,we should focus on improving the quality of stem and the quantity of root,screening rational group composition and canopy structure to further optimize the comprehensive agronom-ic traits of wheat.Then the ideal combination of wheat morphological traits on higher basis could be realized to improve the yield potential and make a breakthrough.