一、材料和方法在本所现有棉花品种资源中,按照一般杂交亲本的选配原则,选择遗传和地理远缘,丰产性和适应性较好,绒长相近的品种(系)54个作亲本,共配制32个杂交组合。分别于一九七八和一九七九年进行杂种一代筛选鉴定。亲本种子都是一般良种,未经自交提纯。对照品种为本省当家品种沪棉204原种一代,杂交组合绝大多数采用正交,个别反交和三交。田间试验设计为间比法排列,每小区种组合一个(双行),两个 I. Materials and Methods In accordance with the matching principle of common hybrid parents, 54 varieties (lines) with similar cashmere length and high yield and adaptability were selected from the existing cotton variety resources of this institute. Parents, a total of 32 hybrid combinations. The hybrid generation was identified in 1978 and 1979 respectively. The parents of the seeds are generally thoroughbred, without self-purification. The control varieties of the native variety Hu Jin 204 seed generation, the vast majority of hybrid combinations using orthogonal, individual anti-cross and three cross. Field trial design for the ratio method, a combination of each district species (two lines), two