摘要
对28个棉花新品系的10个农艺性状进行评价,并对主要农艺性状与皮棉产量进行相关和通径分析。结果表明,衣分、单株铃数、株高与皮棉产量的相关性达极显著水平,相关系数分别为0.59、0.57和0.53,果枝数与皮棉产量显著相关,相关系数为0.46。通径分析表明,衣分、籽指、单铃重和株高4个性状对皮棉产量的影响较大。结合回归方程,确定单铃重和衣分为影响皮棉产量的主要因素,可作为棉花新品系高产育种的重要指标。
10 agronomic traits of 28 new cotton lines were evaluated, and the correlation and path analysis for the main agronomic traits and lint yield were acted as well. The results indicated that the correlation between lint yield and lint percent- age, bolls per plant, plant height reached extremely significant level, the correlation coefficients were 0.59, 0.57 and 0.53 respectively; the correlation between fruit branche numbers and lint yield were significant, the correlation coefficient was 0.46. According to the path analysis, lint yield was affected largely by hnt percentage, seed index, boll weight and plant height. Combined with the regression equation, boll weight and lint percentage were the main factors affecting the lint yield, and they could be taken as the important indexes for high - yield breeding of new cotton lines.
出处
《棉花科学》
2016年第4期22-28,共7页
Cotton Sciences
基金
国家现代农业产业技术体系建设资金项目(CARS-18-39)
河南省科技攻关项目(162102110016)
关键词
棉花
农艺性状
产量
相关分析
通径分析
Cotton
Agronomic traits
Yield
Correlation analysis
Path analysis
