北疆陆地棉不同品种产量和品质性状的空间分布研究

对六个早熟陆地棉品种(系)的部分产量性状和品质性状的空间分布进行了研究分析,结果表明,不同果枝间的铃重、衣分、绒长存在较大差异,且达显著水平.铃重、衣分、绒长在不同果枝间的分布呈现一定的规律性,铃重表现为中上部果枝的铃重较大,顶部和下部枝铃重偏低,尤以下部第一果枝铃重最低;衣分表现为中部果枝高,而上部和下部较低;绒长则表现为随着果枝节位的升高,绒长呈下降的趋势.比强和马克隆值在不同果枝间的也存在一定差异,但未达显著水平.根据前人研究对以上情况进行了探讨,并以此就北疆棉区的早熟陆地棉育种和栽培提出了看法.

Study on Space Distribution of Yield and Fiber Quality Traits of Different Cultivars of Early Upland Cotton in the North of Xinjiang

Distribution of yield and fiber quality traits of six early upland cotton cultivars(lines) were analyzed.The results showed that there were significant differences of boll size,lint percent,fiber length amomg different fruit branch,but there were no significant differences of fiber strength and micronaire.There are some regulation for the distribution of boll size,lint percent ,fiber length between different fruit branch.The distribution of boll size is different:the boll on middle and upper part is heavier.The boll on upper and lower part is lighter.The performance of lint percent is that lint percent on middle part is higher,lint percent on upper and lower part is lower.Fiber length tends to descend with fruit branch going up.