摘要
【目的】为新疆陆地棉品种选育、选择和高产栽培提供理论和参考依据。【方法】对29个陆地棉品种(系)的主要性状进行变异性、聚类和相关性分析。【结果】29个陆地棉品种(系)聚为2大类4亚类,这些亚类之间的表型特征差异较明显;其始节位、果枝数、667 m^2株数、株高的变异系数较大,产量及其构成次之、纤维品质构成最小;皮棉产量与单株铃数、单铃重、667 m^2株数、衣分、始节位、果枝数、绒长呈正相关,与株高、籽指、衣指、比强度、整齐度、伸长率和马克隆值呈负相关,其中衣分、667 m^2株数与皮棉产量达到了显著水平。【结论】衣分和667 m^2株数是影响皮棉产量的主要因素,其次是单株铃数、单铃重,因此南疆种植陆地棉应选择高衣分品种、适当增大栽培密度是提高产量的重要途径之一。
[Objective]The present research was carried out to effectively provide the useful information and academic base for choosing and breeding high yield cotton variety in Xinjiang.[Method]The correlation,cluster and variation of the main agronomic characters were analyzed in 29 cotton cultivars or lines by using multivariate statistics.[Result]All the 29 cotton cultivars or lines were clustered into 2 major groups or 4 small categories according to the main characters.The phenotypic characteristics of those subtypes were obviously different.In all the main characters,variation coefficient of first fruit node,fruit branches,plants per 667 m^2 and plant height were the most group,those of the characters of yield were the middle,and those of the characters of fiber quality were the least.Lint yield of cotton had a positive correlation with seven characteristics including bolls per plant,plants per 667 m^2,lint percentage,first fruit node,weight per boll, fruit branch and fiber length,but a negative correlation with seven characteristics including plant height,seed and lint index,fiber strength,uniformity,elongation rate and micronaire.Most importantly,correlation analysis indicated that lint yield was positively relative to plants per 667 m^2 and lint percentage at 0.05 level. [Conclusion]Lint percentage and plants per 667 m^2 are the main effecting factors of lint yield,but bolls per plant and weight per boll are the second effecting factors.Consequently,augmenting plant density,choosing the upland cotton cultivars or lines of the higher lint percentage are one of important approaches for increasing lint yield of the upland cotton in Southern Xinjiang.
出处
《新疆农业科学》
CAS
CSCD
北大核心
2011年第8期1386-1391,共6页
Xinjiang Agricultural Sciences
基金
新疆农垦科学院青年基金项目(YQJ2009-06)
新疆农垦科学院引导计划项目(YYD2010-6)
新疆兵团博士资金专项(2010JC01)
关键词
陆地棉
变异性
聚类分析
相关性分析
upland cotton
variation
cluster analysis
correlation analysis
