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通过对冀中南种植棉花新品种进行产量品质性状的综合评价分析,结果表明在不同的生态环境条件下,供试棉花品种产量性状以单铃重的变异系数最大,纤维品质性状以马克隆值的变异系数最大。通径分析的结果表明,按照直接通径系数由高到低排序,产量构成因子中的衣分>单株铃数>单铃重>籽指,纤维品质性状中的整齐度指数>断裂比强度>马克隆值>伸长率>上半部平均长度。前3个主成分的累计方差贡献率达87.263%,基本反映供试棉花品种10个主要性状的绝大部分信息。
Through the comprehensive evaluation of yield and quality traits of new cotton varieties planted in central and south of Hebei Province, the results showed that under different ecological environment conditions, the coefficient of variation of boll weight per yield of tested cotton varieties was the highest, the fiber quality traits were micronaire The coefficient of variation is the largest. The results of path analysis showed that according to the order of direct path coefficient from high to low, the percentage of yield component> bolls per plant> boll weight> index of uniformity of fiber quality index> breaking strength > Micronaire> elongation> average length of the upper half. The cumulative variance contribution rate of the first three principal components reached 87.263%, basically reflecting most of the 10 main traits of the tested cotton varieties.