Seasonal changes of endogenous soluble sugar and starch in different developmental stages of Fargesia yunnanensis

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• 作者：Shuguang Wang ; Yulong Ding ; Shuyan Lin ; Xing Ji ; Hui Zhan
• 关键词：Fargesia yunanensis ; Phenology ; Endogenous soluble sugar content ; Starch content ; Seasonal changes
• 刊名：Journal of Wood Science
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：62
• 期：1
• 页码：1-11
• 全文大小：2,918 KB
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• 作者单位：Shuguang Wang (1)
  Yulong Ding (2)
  Shuyan Lin (2)
  Xing Ji (2)
  Hui Zhan (1)
  
  1. Faculty of Life Science, Southwest Forestry University, Kunming, 650224, People’s Republic of China
  2. Bamboo Research Institute, Nanjing Forestry University, Nanjing, 210037, People’s Republic of China
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Wood Science and Technology
  Materials Science
  Characterization and Evaluation Materials
  
• 出版者：Springer Japan
• ISSN：1611-4663

文摘

The endogenous soluble sugars and starch are the main carbohydrates accumulated in bamboo culms and the seasonal changes of their contents are also related to the bamboo phenology. In this study, it is observed that the dormancy phase of new Fargesia yunnanensis culms continued as long as 6 months from November to next May. The time interval for the sugar storage between the branching and leafing stage and shooting stage is relatively short. Moreover, the branching and leafing stage overlapped the shoot buds formation stage. Starch granules were depleted when the branching and leafing stage commenced, but then were accumulated before the shooting stage. The endogenous soluble sugar content in 2- and 3-year-old culms decreased during the branching and leafing stage, but increased before the shooting stage, and then decreased after the shooting stage. In shoots, the endogenous soluble sugar and starch contents increased and decreased with culm elongation, respectively. Starch granules were accumulated more in nodes than in internodes in un-elongated internodes. Shoot buds and shoots are the main sink tissues for sugar storage in the whole clumps. The bamboo clumps should be fertilized and irrigated before and after the branching and leafing stage and shooting stage. The late autumn is the best season for the culm harvest. Keywords Fargesia yunanensis Phenology Endogenous soluble sugar content Starch content Seasonal changes