矮败小麦轮回双向交替选择育种技术研究

Dwarf Male-sterile Wheat Cycle of Two-way Alternate Selective Breeding Technology Research

为育成适合沧州地区生产的小麦突破性品种,利用矮败材料和优异抗旱耐盐亲本材料,建立盐碱圃和优良圃的双向交替选择,从而构建轮回选择群体,创新了矮败小麦轮回双向交替选择育种技术,实现了品种大量聚集有效的主效基因和微效基因,使之充分重组累加,产生更多遗传变异。利用自然选择的方法加大逆境选择压力,培育品种的多抗性,并通过人工选择和自然选择的方法选择培育出不同类型区的品种,培育出了沧核036等小麦品种,是一种行之有效的育种方法。

Abstract ＂In order to breed suitable wheat breakthrough varieties for Cangzhou Area, using dwarf male-sterile materials, and excellent drought resistance and salt tolerance parent material, established two-way alternate choice of saline nursery and excellent nursery so as to build a group of recurrent selection, the cycle of two-way alternate selective breeding technolbgy realized the innovation for dwarf male-sterile wheat, realized the varieties with large effective major genes and minor genes, made full restructuring accumulation, produced more genetic variation. By using the method of natural selection, increased selection pressure, cultivated multiple disease resistance of varieties. And bred different varieties in different type area through artificial selection and natural selection method, we had produced some wheat varieties,including Cang-he 036 and so on, it was an .effective method of breeding.