摘要
为了解陆地棉纤维品质与主要农艺性状之间的关系,对中571和中棉所49杂交F5群体材料的5个农艺性状和3个品质性状进行了相关性分析。结果表明,各性状间存在一定的相关性,在通径分析中,对纤维上半部平均长度的直接贡献大小为衣分>单铃质量>株高>果枝数>果枝节位,对纤维断裂比强度的直接贡献大小为衣分>单铃质量>果枝数>株高>果枝节位,对马克隆值的直接贡献大小为衣分>单铃质量>果枝数>果枝节位>株高。回归分析结果表明,株高、果枝数、单铃质量和衣分决定了纤维上半部平均长度0.197 5的变异,株高、果枝数、单铃质量和衣分决定了纤维断裂比强度0.221 4的变异,果枝节位、果枝数、单铃质量和衣分决定了马克隆值0.471 8的变异。主成分3对棉花纤维上半部平均长度、纤维断裂比强度、马克隆值的累积贡献率分别为68.590 3%、70.343 7%和70.421 7%。对于材料自身的特性而言,通过杂交来互补各品种特性是一种有效方法,可以在棉花品种选育中实现产量与品质的平衡。
In order to understand the relationship between the fiber quality and main agronomic traits of upland cotton, the correlation analysis between five agronomic traits and three quality traits of F 5 generation of Z571 and CCRI 49 hybrid group was carried out. The results showed that there was a certain correlation among characters. In path analysis, the direct contribution to the average length of fiber upper half was lint percentage > boll weight > plant height > fruit branch number > fruit branch location, the direct contribution to the breaking tenacity was lint percentage > boll weight > fruit branch number > plant height > fruit branch location, the direct contribution to micronaire value was lint percentage > boll weight > fruit branch number > fruit branch location > plant height. The regression analysis results showed that plant height, fruit branch number, boll weight and lint percentage determined the variation of the average length of fiber upper half and breaking tenacity by 0.197 5 and 0.221 4 , respectively. Fruit branch location and number, boll weight and lint percentage determined the variation of the micronaire value by 0.471 8 . The cumulative contribution rates of principal component 3 to average length of fiber upper half, breaking tenacity and micronaire value were 68.590 3%, 70.343 7% and 70.421 7%, respectively. For the characteristics of material itself, it is an effective method to complement characteristics of varieties by hybridization, so that the balance of production and quality can be achieved in the cotton breeding.
作者
石建斌
周红
王宁
许庆华
严根土
SHI Jian-bin;ZHOU Hong;WANG Ning;XU Qing-hua;YAN Gen-tu(Institute of Cotton Research of Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology, Anyang 455000, China)
出处
《江苏农业学报》
CSCD
北大核心
2019年第4期770-775,共6页
Jiangsu Journal of Agricultural Sciences
基金
国家重点研发计划项目(2018YFD0100300、2016YFD0101401)
现代农业产业技术体系项目(CARS-18-05)
关键词
陆地棉
农艺性状
纤维品质性状
相关性分析
upland cotton
agronomic traits
fiber quality traits
correlation analysis
