一、前言(一)选育广泛适应性小麦品种的意义一个作物品种要求有一定的生长环境,也要有一定的生态条件适应范围。有的品种适应范围广,有的品种适应范围狭,这与所选品种的遗传背景和选择鉴定条件有关。每个育种者都希望选育适应性宽的作物品种,这种品种能在差异较大的生态条件下生长,而 First, the preface (A) the significance of breeding a wide range of adaptive wheat varieties A crop species requires a certain growth environment, but also have some ecological conditions to adapt to the scope. Some species adapt to a wide range, and some species to adapt to a narrow range, which is related to the genetic background of the selected varieties and selection and identification conditions. Each breeder wants to breed a wide variety of crop varieties that can grow under widely varying ecological conditions and