作物学报2024，Vol.50Issue(1)：209-218,10.DOI:10.3724/SP.J.1006.2024.34039
乙烯利催熟对机采棉铃重和纤维品质的影响
Ethephon ripening affects boll weight and fiber quality of machine-harvested cotton
摘要
Abstract
The use of ethephon can achieve early and concentrated the machine-harvested cotton boll opening.The purpose of this study is to analyze the effect of the boll-period shortening on the boll weight,fiber quality,and relationship,when the ethephon was sprayed at different stages of the boll development with a selection of 18 materials.The results showed that when the period of cotton was 47-69 days,spraying ethephon at the age of boll was 40.5-49.7 days,which could advance boll opening by 3.5-5.7 days.It took 64.1-69.7 days for fiber to fully mature under ethephon,while it took 54.8-60.5 days for cotton seed.When boll was opened 1.5-6.2 days earlier,the probability of boll weight and fiber quality decreasing was up to 58.0%-76.5%.To achieve an early opening of the boll,ethephon can be applied at the boll age of 34.8-44.1 days,when the boll weight(＜0.26 g)and fiber quality damage(length reduction＜0.28 mm and fiber strength＜0.30 cN tex-1)at the top of cotton plant are reduced by 5%and 1%,respectively.In addition,the boll period was shortened in some materials,but the boll weight,fiber length,and strength were increased,with the 9.5%-23.5%probability.Therefore,the reasonable use of ethephon in some cotton varieties can shorten the boll period and improve the boll weight and quality.关键词
棉花/催熟/单铃重/纤维品质/集中吐絮Key words
cotton/ripening/boll weight/fiber quality/concentrated boll-opening引用本文复制引用
刘韬奋,杨明凤,勾玲,罗单,张启鹏,孙圆圆,李培松,田景山,张旺锋,向导,张亚黎..乙烯利催熟对机采棉铃重和纤维品质的影响[J].作物学报,2024,50(1):209-218,10.基金项目
本研究由国家重点研发计划项目(2020YFD1001001),棉花生物学国家重点实验室开放课题(CB2022A26)和新疆兵团财政科技计划项目(2021CB044)资助. This study was supported by the National Key Research and Development Program of China(2020YFD1001001),the Open Project of State Key Laboratory of Cotton Biology(CB2022A26),and the Financial Science and Technology Planning Project of the XPCC(2021CB044). （2020YFD1001001）
