|Table of Contents|

Comparison of Photosynthesis in Different Months of Bletilla striata(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年22期
Page:
162-165
Research Field:
Publishing date:

Info

Title:
Comparison of Photosynthesis in Different Months of Bletilla striata
Author(s):
HE An-na1; 2; 3; LI Sheng-hua1; 2; 3; ZHU Ya1
1.Department of Life Science,Huaihua University,Huaihua,Hunan 418008;
2.Key Laboratory of Research and Utilization of Ethnomedicinal Plant Resources of Hunan Province,Huaihua,Hunan 418008;
3.Key Laboratory of Xiangxi Medicinal Plant and Ethnobotany of Hunan Higher Education,Huaihua,Hunan 418008
Keywords:
Bletilla striata; photosynthetic characteristics; different months; diurnal variation
PACS:
R 282
DOI:
-
Abstract:
Taking Bletilla striata as materials,the diurnal variation of photosynthetic in June,and August and October by using the Li-6400 photosynthetic system was studied and compared.The results showed that,diurnal variation of photosynthetic rate had a ‘midday depression’ phenomenon,and the photosynthetic rate in June was stronger when there was the strongest photosynthesis and the maximum value reached to 8.1 μmol.m-2.s-1 at 9:00.The maximum value in autumn was also at 9:00 reached to 5.81 μmol.m-2.s-1,and the photosynthetic rate in October was total low whose average value was only 3.31 μmol.m-2.s-1.There was a significant positive correlation between net photosynthetic rate and light intensity in June and October,and the photosynthetic rate of Bletilla striata mainly determined by stomata factors.

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Last Update: 2014-12-13