[1]朱万泽,吴永波,薛建辉.贡嘎山地区黄背栎的光合特性[J].南京林业大学学报(自然科学版),2006,30(01):025-28.[doi:10.3969/j.jssn.1000-2006.2006.01.006]
 ZHU Wan-ze,WU Yong-bo,XUE Jian-hui.Photosynthetic Characteristics of Quercus pannosa in Gongga Mountain Region[J].Journal of Nanjing Forestry University(Natural Science Edition),2006,30(01):025-28.[doi:10.3969/j.jssn.1000-2006.2006.01.006]
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贡嘎山地区黄背栎的光合特性
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
30
期数:
2006年01期
页码:
025-28
栏目:
研究论文
出版日期:
2006-01-20

文章信息/Info

Title:
Photosynthetic Characteristics of Quercus pannosa in Gongga Mountain Region
文章编号:
1000-2006(2006)01-0025-04
作者:
朱万泽1吴永波2薛建辉2
1. 中国科学院成都山地灾害与环境研究所, 四川 成都 610041; 2. 南京林业大学森林资源与环境学院, 江苏 南京 210037
Author(s):
ZHU Wan-ze1 WU Yong-bo2 XUE Jian-hui2
1. Institute of Mountain Harzard and Environment CAS, Chengdu 610041, China; 2. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037, China
关键词:
黄背栎 光合特性 贡嘎山地区
Keywords:
Quercus pannosa Photosynthetic characteristics Gongga Mountain region
分类号:
S718.43
DOI:
10.3969/j.jssn.1000-2006.2006.01.006
文献标志码:
A
摘要:
<正>从福寿螺的胃部组织中获得总RNA,经RT-PCR扩增、测序得到1条新糖苷水解酶基因片段。分析显示其ORF(Open Reading Frame)全长882bp,编码294个氨基酸。与福寿螺多功能纤维素酶EGX的C端高度同源性达到89.8%。含有糖苷水解酶第10家族的保守性氨基酸序列。
Abstract:
The photosynthetic characteristics of leaves of Quercus pannosa at the different elevation spots of Gongga Mountain region were studied by using the Li-6 400 portable photosynthesis system. The results were as follows: (1) The diurnal variation of net photosynthetic rate (Pn) on sunny days in August were one smooth peak curve and had no midday depression. With the elevation increasing, the net photosynthetic rate and the transpiration rate and the water use efficiency decreased, but the conductance increased, which favored gas exchange of photosynthesis in the plants of high elevation; (2) There were obvious differences in the responses of Pn to photosynthetic active radiation at different elevation spots. The light compensate point(LCP) and the light saturated point(LSP) of leaves were 39.16~68.06/Lmol/(m2?s) and 1124.78~1754.88μmol/(m2?s) respectively. The apparent quantum efficiency was between 0.02812 and 0.03173. With the elevation increasing, the LCP, LSP and the maximum net photosynthetic rate of leaves increased; (3) The CO2 compensate point was between 68.47μmol/mol and 105.21μmol/mol. With the elevation increasing, the O2 compensate point decreased, which favored for adaptability of plants to the circumstance of low CO2 pressure in higher elevation regions. The CO2 saturated point was 700μmol/mol or so, and the carboxylation efficiency was between 0.035 and 0.038.

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更新日期/Last Update: 2013-05-20