以自主发现的皱叶突变体“W2 - 24 -2”为试验材料,该突变体约从第8果枝叶出现皱叶性状,并一直延续到植株的未了节位.在F,群体近等基因条件下分析显示:与正常叶株相比,突变体株的棉铃圆而较小、单株结铃性较差、籽指较小、每囊粒数较少,但衣分则表现增高趋势.分析皱缩叶与正常叶杂交后代的叶型遗传特征表明:该皱叶突变是受一对隐性基因控制的质量性状.该突变体表型与前人已报道皱叶突变并不相同,故将其基因符号暂定为wr3.%The wrinkled leaf mutant " W2 -24 -2" found by us independently was used as the tested material. This mutant appears wrinkled leaves from about the eighth fruiting branch to the last one. In the F2 group, we compared the mutant plants with the normal -leaf plants, and it was found that the mutant plants had round and smaller bolls, less number of bolls per plant, smaller seed index, less grains per capsule, but the lint percentage increased. The genetic analyses of leaf type of the offspring from the hybridization between wrinkled - leaf plant and normal - leaf plant showed that the wrinkled leaf mutation was a qualitative trait controlled by a pair of recessive genes, and the phenntyne, of this mutant was different from that of the wrinkled - leaf upland cotton mutants reported by the predecessors, so its gene symbol was denominated wr3 tentatively.
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