论文部分内容阅读
采用“八五”育成的七个棉花品种(系),按不完全双列杂交,配制12个组合,分析了单株铃数、铃重、衣分,衣指.纤维2.5%跨长,麦克隆值.比强、整齐度,伸长率等九个性状的一般配合力和特殊配合力。结果表明,“绵育3号”产量构成性状和纤维品质的一般配合力效应最好,川243次之,川棉56产量构成性状的一般配合力表现突出。组合特殊配合力效应分析,川棉56×川243表现较为突出。同时单抗枯萎病品种和抗枯萎兼抗黄萎病品种产量构成性状、纤维品质的配合力无明显差异。本地育成的品种配合力效应优于外地品种,因此,选用本地品种作杂交亲本仍然不可忽视。
Seven cotton cultivars (lines) bred by the “Eighth Five-Year Plan” were used. Twelve combinations were made by incomplete double crosses. The number of bolls per plant, boll weight, lint percentage and clothing index were analyzed. 2.5% span fiber length, Micronaire value. Strong, uniform, elongation and other nine traits of the general combining ability and special combining ability. The results showed that the general combining ability of “Mianyu No.3” was the best, and the combining ability was the best with 243 times. Combination of combining ability with special effects analysis, Sichuan Cotton Ridge 56 × 243 performance is more prominent. At the same time, the resistance to Fusarium wilt and anti-wilt resistance to Verticillium wilt were not significantly different with the combination of fiber quality. The effect of combining ability of local breeds is better than that of foreign breeds, therefore, the selection of local breeds as hybrid parents can not be ignored.