|Table of Contents|

Correlation Between Diurnal Changes of Photosynthetic Rate and  Environmental Factors in Two Cerasus Plants(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年12
Page:
78-82
Research Field:
Publishing date:

Info

Title:
Correlation Between Diurnal Changes of Photosynthetic Rate and  Environmental Factors in Two Cerasus Plants
Author(s):
KUANG JinggeLI WantingCHENG XiaomaoHUANG Xiaoxia
(College of Landscape Architecture,Southwest Forestry University,Kunming,Yunnan 650224)
Keywords:
Cerasus cerasoidesCerasus serrulataphotosynthetic ratephotosynthetic active radiation
PACS:
-
DOI:
10.11937/bfyy.201712020
Abstract:
The net photosynthetic rate,stomatal conductance,transpiration rate,intercellular CO2 concentration and photosynthetic active radiation and air relative humidity,atmospheric temperature of Cerasus cerasoides and Cerasus serrulata were comparatively investigated by LI-6400 portable photosynthesis system in field from September to November,2015.The results showed that the daily variation curves of Cond,Tr and Pn in two plants presented double peak curve.The peak of net photosynthetic rate(Pn) of Cerasus cerasoides appeared at 12:30 and 14:30,reached 7.33 μmol?m-2?s-1 and 7.74 μmol?m-2?s-1 respectively.The peak of net photosynthetic rate(Pn) of Cerasus serrulata appeared at 12:30 and 15:30,reached 6.08 μmol?m-2?s-1 and 3.37 μmol?m-2?s-1 respectively.There were significant correlations among the active radiation(PAR),air temperature(Tair) and relative humidity(RH-R) with Pn in Cerasus cerasoides but not in Cerasus serrulata.There was no correlation between Pn and Ci of two plants.The diurnal variation of Pn of Cerasus cerasoides was exceedingly positively correlated with transpiration rate (Tr),but significant negatively related with the intercellular CO2 concentration (Ci).For Cerasus serrulata,there was significantly negative correlation between the Pn and the intercellular CO2 concentration (Ci).

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Last Update: 2017-06-26