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不同纬度引种地马来甜龙竹(Dendrocalamus asper)光合特性的比较(PDF)

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

Issue:
2012年06期
Page:
53-57
Column:
研究论文
publishdate:
2012-12-05

Article Info:/Info

Title:
Comparison of the photosynthetic characteristics of Dendrocalamus asper introduced in different latitude regions
Author(s):
DU Xuhua1DING Xingcui1CHEN Yan1WU Shouguo2ZOU Yueguo3WU Guangwen
1. China National Bamboo Research Center, State Foresty Administration, Hangzhou 310012,China; 
2. Forestry Bureau of Rui′an City, Rui′an 325200,China;
3. Forestry Bureau of Hua′an County, Hua′an 363800,China;
4. Forestry Bureau of Guang
Keywords:
Dendrocalamus asper (Thailand indigenous species)introductionphotosynthetic physiologyphotoresponse
Classification number :
S795
DOI:
10.3969/j.jssn.1000-2006.2012.06.011
Document Code:
A
Abstract:
Through the research on photosynthesis of bamboo species (Dendrocalamus asper)introduced from Thailand and planted in Zhejiang, Fujian and Guangdong provinces,their physiological adaptation response to different environments during domestication process were discussed. Results got in the 3 experimental fields were as follows: Photosynthetic capacity of D. asper was significantly different in three different regions. Its net photosynthetic rate (Pn), phtosynthetic capacity, transpiration rate(Tr) etc. varied with the latitude,i.e.,the one in Rui′an where has the highest latitude and relatively low light and temperature showed lower photosynthetic capacity than those in Hua′an and Guangning. The diurnal change of Pn in Rui′an demonstrated a “singlepeak”, whose peak time appeared at 12:00 am, while the other two were “twin peaks”, whose peak time appeared at 10:00 and 14:00 respectively, and the first peak was higher than the latter. The photoresponse characteristic parameters also demonstrated that the photosynthesis capacity of D. asper in Rui′an was weaker than the other two places. The Pn,max in Rui′an was only about 80 % of that in Hua′an and Guangning. Rui′an′s light compensation point(Plc) and light saturation point(Pls) were also very low, only 38.4 and 712.60 μmol/(m2〖DK〗·s)respectively. Among three places, Plc and Pls of D. asper′s in Hua′an was the highest. In the morning, the Gs was the essential factor to Pn, comparing that Pn might be effected mainly by other factors in the afternoon. Gs in Rui′an was obviously lower than that in the other two regions, therefore, the intercellular CO2 concentration and Pn in Rui′an was the lowerest among the three. The dormancy of Pn in the noon time was mainly caused by the inhibition of Gs, while in the afternoon, the intercellular CO2 concentration kept high, as the low rate of Pn was caused by nonstomatal factors.

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Last Update: 2012-11-30