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不同种源青钱柳苗期光合特征及变异分析(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2012年04期
Page:
41-45
Column:
研究论文
publishdate:
2012-07-31

Article Info:/Info

Title:
Variation in photosynthetic characteristics of Cyclocarya paliurus seedlings from different provenances
Author(s):
YANG Ruiqing12 CHU Xiuli13 YANG Wanxia1 SHANG Xulan1 FANG Shengzuo1* CHE Shaohui3
1.College of Forest Resources and Environment, Nanjing Forestry University, Nanjing 210037, China; 2.Shanghai City Green Management Guidance Station, Shanghai 200020, China; 3.Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091
Keywords:
Cyclocarya paliurus provenance photosynthetic characteristics
Classification number :
S718.4
DOI:
10.3969/j.jssn.1000-2006.2012.04.008
Document Code:
A
Abstract:
The photosynthetic characteristics of Cyclocarya paliurus from twelve selected provenances were measured with Li Cor-6400 potable photosynthesis system. The results were as follows: The diurnal dynamic of photosynthesis rate(Pn)and transpiration rate(Tr)displayed a 2-peak “M” shaped curve which appeared at around 10:00 and 14:00 respectively. However, CO2 concentration between cells showed a “W” shaped curve which exactly opposite to the Pn and Tr curve. Stomatal conductance had max value at 6:00 but decreased quickly after then. However, it displayed same trend with Pn and Tr after 8:00. Water use efficiency(WUE)increased before 8:00 and after 12:00, but decreased during the period of 8:00-12:00. There were significant differences in the photosynthetic characteristics among different provenances selected. By using the significant differed photosynthesis characteristics to do the Fuzzy mathematics analysis, Kunming, Anji, Lushan, Ziyuan and Shucheng were considered the superior ones cultivated in Jiangsu province.

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Last Update: 2012-07-07