辽棉密植条件下铃重、衣分、纤维品质的差异及空间分布规律  

Difference and Spatial Distribution of Boll Weight,Lint Fraction and Fiber Quality of Liao Cotton under Dense Planting Conditions

作　　者：王巍[1] 赵志强 高艳平[1] 王子胜[1] WANG Wei(Liaoning Academy of Agricultural Sciences,Liaoyang,Liaoning111000)

机构地区：[1]辽宁省农业科学院,辽宁辽阳111000

出　　处：《园艺与种苗》2023年第6期78-80,共3页Horticulture & Seed

基　　金：国家棉花产业技术体系辽河综合实验站(CARS-15-31);国家重点研发计划--七大作物育种专项(SQ2018YFD010081,2017YFD0101601,2016YFD0101412)

摘　　要：[目的]通过对4个辽棉品种不同果枝节位铃重、衣分、纤维品质性状的研究,探明不同果枝节位铃重、衣分、纤维品质之间的差异程度和分布规律。[方法]选用特早熟棉新品种(系)辽7171、辽6182、辽102、辽206为材料,吐絮后按照不同品种处于不同果枝节位、不同空间位置采样考种、进行纤维品质指标检测,分析各品种不同果枝节位间铃重、衣分和纤维品质指标的差异及分布规律。[结果]不同果枝节位间铃重和衣分均表现为随着果枝节位的上移呈先上升后下降的趋势,铃重最大值出现在棉株中部横向第3或第4果枝,衣分最高值出现在棉株中部横向第4或第5果枝。各品种不同果枝间纤维上半部平均长度、马克隆值均表现为随着果枝节位的上移呈先上升后下降的趋势。纤维上半部平均长度最大值出现在第2或第3果枝,断裂比强度随着果枝节位的上移呈下降趋势,最大值出现在第1果枝;长度整齐度指数相对稳定。综上,中部果枝的铃重和衣分较高,纤维综合品质指标随着果枝节位的上移整体呈现下降趋势,第1~3果枝的纤维品质指标较好。[结论]为棉花密植研究提供理论参考。[Objective]The boll weight,lint percentage and fiber quality of different fruit nodes of four Liao cotton varieties were studied to find out the difference degree and distribution of boll weight,lint percentage and fiber quality of different fruit nodes.[Method]The new ersly-maturing cotton variety(line)selected by Liaoning Academy of Agricultural Sciences,Liao 7171,Liao 6182,Liao 102 and Liao 206 were materials.After batting,seed sampling was conducted according to different varieties in different branches and different spatial positions,and fiber quality index was detected.The differences and distribution rules of boll weight,lint percentage and fiber quality index among different branches and nodes of different varieties were analyzed.[Result]The results showed that the boll weight and lint percentage of different fruit branches increased first and then decreased with the moving up of fruit branches.The maximum boll weight appeared in the 3rd or 4th transverse fruit branch in the middle of cotton plant,and the highest lint percentage appeared in the 4th or 5th transverse fruit branch in the middle of cotton plant.The average length and Macronone value of the upper part of interbranch fiber of different varieties were firstly increased and then decreased with the move of fruit branch node.The maximum average length of the upper part of the fiber appeared in the second or third fruit branch,and the fracture strength showed a decreasing trend as the node moved upward,and the maximum appeared in the first fruit branch The length uniformity index was relatively stable.In conclusion,the boll weight and coat percentage of the middle branch were higher,and the fiber quality index is relatively stable.In conclusion,the boll weight and coat percentage of the middle branch were higher,and the fiber quality index showed a downward trend with the moving up of the fruit branch,and the fiber quality index of the 1st to 3rd branch was better.[Conclusion]The study could provide reference for dense planting of cotton.

关 键 词：棉花 果枝节位 铃重 衣分 纤维品质 空间差异规律 差异性 

分 类 号：S562[农业科学—作物学]