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The effects of sowing date on cottonseed properties at different fruiting-branch positions

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分类：S[农业科学]
作者机构：Key Laboratory of Crop Growth Regulation, Ministry of Agriculture/College of Agriculture, Nanjing Agricultural University, Nanjing 210095, P.R.China
相关基金：This work was funded by the National Natural Science Foundation of China （31571606）, the Special Fund for Agro-scientific Research in the Public Interest, China （201303002）, the Jiangsu Collaborative Innovation Center for Modern Crop Production, China （JCIC- MCP） and the China Agriculture Research System （CARS-18-20）.

作者： HU Wei, CHEN Mei-li, ZHAO Wen-qing, CHEN Bing-lin, WANG You-hua, WANG Shan-shan, MENG Ya-li, ZHOU Zhi-guo

关键词：播种日期, 水果分支位置, 棉子性质, sowing date, fruiting-branch position, cottonseed properties

中文摘要：

一个二年的地实验被进行在不同水果分支位置(FBP ) 在棉子性质上说明播种日期的效果。二棉花栽培变种(Kemian 1 和 Sumian 15 ) 在 4 月 25 日被播种，在 2010 和 2011 的 5 月 25 日，和 6 月 10 日分别地。圆蒴成熟时期与推迟播种日期增加了。正常播种处理(4 月 25 日) 有更高的种子重量，胚胎重量，胚胎油内容和比迟了的播种处理(5 月 25 日和 6 月 10 日) 满意的蛋白质。flowering 日期，种子重量，胚胎重量，胚胎油和蛋白质内容和蛋白质内容被不同 FBP 改变。播种日期的一个重要相互作用

英文摘要：

A two-year field experiment was conducted to illustrate the effects of sowing date on cottonseed properties at different fruiting-branch positions（FBPs）.Two cotton cultivars（Kemian 1 and Sumian 15）were sowed on 25 April,25 May,and10 June in 2010 and 2011,respectively.The boll maturation period increased with the delaying of sowing date.Normal sowing treatment（25 April）had higher seed weight,embryo weight,embryo oil content and protein content than late sowing treatments（25 May and 10 June）.The flowering date,seed weight,embryo weight,embryo oil and protein contents,and the dynamic changes of embryo oil and protein contents were altered by different FBPs.A significant interaction of sowing date×FBP was observed on embryo weight,embryo oil content,embryo protein content and the dynamic changes of embryo oil and protein contents,but was not observed on seed weight.Seed weight,embryo weight,embryo oil and protein content had significant positive correlations with the mean daily temperature（MDT）,mean daily maximum temperature（MDTmax）,mean daily minimum temperature（MDTmin）,and mean daily solar radiation（MDSR）,indicating that temperature and light resources were the main reasons for different sowing dates affecting the cottonseed properties at different FBPs.Moreover,the difference in MDT was the main difference in climatic factors among different sowing dates.

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