产量因子和形态性状对高品质抗虫杂交棉皮棉产量的影响  

Effects of Yield Components and Morphological Traits on Lint Yield of Insect-resistant Transgenic Hybrid Cotton with High Quality

作　　者：汤飞宇[1] 付学琴[2] 王晓芳[1] 莫旺成[1] 肖文俊[1] 

机构地区：[1]江西农业大学农学院,江西南昌330045 [2]江西师范大学生命科学学院,江西南昌330000

出　　处：《作物杂志》2009年第3期68-70,共3页Crops

基　　金：江西省农业攻关项目[赣科发计字(2006)38号]

摘　　要：以皮棉产量为指标,利用系统聚类中的最小离差平方和法将30个高品质抗虫棉杂交组合聚为高、中、低产3类,比较3类组合3个产量因子及10个形态性状的差异显著性,并将其与皮棉产量作相关分析和逐步回归分析。结果表明,不同产量类型杂交组合在株铃数和衣分上存在显著差异,两者随着皮棉产量的提高而增加,与皮棉产量的简单相关系数居前两位,且株铃数对皮棉产量具有最大的正向直接效应;10个形态性状未发现存在显著差异,节枝比对皮棉产量具有较大的正向直接效应,始果枝高对皮棉产量具有最大的负向直接效应。Thirty insect-resistant transgenic upland cotton crosses were divided into three types （high, medium, low） based on lint yield per hectare by Ward＇s clustering method. Three yield components and ten morphological traits of the three types were compared using one-way ANOVA. The relationships between them and lint yield were investigated using correlation analysis and stepwise regression analysis. The results showed there existed statistically significant difference in bolls per plant and lint percentage for the three types, which increased with increasing lint yield. The Pearson correlation coefficients between them and lint yield were the highest. The path coefficient was the maximum for bolls per plant to lint yield. No statistically significant difference was found for ten morphological traits in the three types. The path coefficient of ratio of fruit node number to fruit branch number to lint yield was positive and significant at 0.05 level. The minimum path coefficient to lint yield was due to the height of first fruit branch.

关 键 词：抗虫杂交棉 高品质 形态性状 产量 因子 皮棉产量 

分 类 号：S562[农业科学—作物学]