Growing degree days is the dominant factor associated with cellulose deposition in cotton fiber

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• 作者：Jingshan Tian (1)
  Xiaobing Hu (1)
  Ling Gou (1)
  Honghai Luo (1)
  Yali Zhang (1)
  Wangfeng Zhang (1)
  
• 关键词：Cotton fiber ; Cellulose ; Temperature ; Growing degree days
• 刊名：Cellulose
• 出版年：2014
• 出版时间：February 2014
• 年：2014
• 卷：21
• 期：1
• 页码：813-822
• 全文大小：710 KB
• 作者单位：Jingshan Tian (1)
  Xiaobing Hu (1)
  Ling Gou (1)
  Honghai Luo (1)
  Yali Zhang (1)
  Wangfeng Zhang (1)
  
  1. Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Group/College of Agronomy, Shihezi University, Shihezi, 832003, Xinjiang, China
  
• ISSN：1572-882X

文摘

Two field experiments were conducted to study the effect of temperatures on the cellulose content of cotton fiber at various stages of fiber development. In the first study, cotton was sown on three different dates so that temperatures were different during fiber development. In the second study, cotton was grown in semi-mobile chambers and night-time temperatures were controlled within the chambers. During the period from anthesis until the onset of rapid cellulose deposition, the average cellulose deposition rate was significantly correlated with growing degree days (GDD) and daily minimum temperature. The onset time of rapid cellulose deposition was significantly affected by GDD and daily maximum temperature. During the period of rapid cellulose deposition, the duration of rapid cellulose deposition and the average rate of cellulose deposition were significantly correlated with GDD. Therefore, GDD had the largest effect on cellulose deposition cotton fiber. The requisite number of GDD during cellulose synthesis must be reached during two stages of cotton fiber development in order to maximize cellulose content. The average cellulose deposition rate between anthesis and the onset of rapid cellulose deposition can be increased by warmer daily minimum. Warmer daily maximum temperatures advanced the onset of rapid cellulose deposition. The cellulose content of cotton fiber is also be affected by conditions during the period of rapid cellulose deposition. Cellulose contents are highest when cellulose accumulates at moderate rates during this period and when the duration of rapid cellulose deposition is long as possible.