|Table of Contents|

Effects of High Temperature and High Humidity on Stomatal and Photosynthesis Characteristics of Grape Leaves in Greenhouse(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年23
Page:
94-101
Research Field:
Publishing date:

Info

Title:
Effects of High Temperature and High Humidity on Stomatal and Photosynthesis Characteristics of Grape Leaves in Greenhouse
Author(s):
ZHU Yuqing; YANG Zaiqiang
Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science & Technology,Nanjing，Jiangsu 210044
Keywords:
stomatal characteristics; grape; stomatal conductance; photosynthesis characteristics; transpiration rate
PACS:
-
DOI:
10.11937/bfyy.20171451
Abstract:
Vitis vinifera L.cv.Hongti was used as material.Three levels of daily maximum temperature and relative humidity were set,30 ℃ and (70±5)% (T1),35 ℃ and (80±5)% (T2),as well as 40 ℃ and (90±5)% (T3).25 ℃ and (60±5)% was as CK.The stomatal and photosynthesis characteristics of grape leaves were measured to study the effects of high temperature and high humidity on stomata characteristics and photosynthesis characteristics of grape leaves.The results showed that the stomata size and stomatal opening in the treatment of high temperature and high humidity under T1,T2 had increased slightly,and the change of stomatal density were opposited.The stomata characteristics of T3 changed obviously,the stomata size,stomatal opening,and ratio of stomatal opening and closure reduced by about 20%,60% and 50%,respectively,at 8 days,while the stomatal density increased by 40%,compared to CK.The order of the net photosynthetic rate on grape leaf was CK>T1>T2>T3.The changes of stomatal conductance and transpiration rate were positively correlated with the increase of high temperature and humidity.Meanwhile,the stomatal conductance and transpiration rate of T3 was the lowest,they were 0.026 mol?m-2?s-1 and 0.72 g?m-2?h-1,respectively.Therefore,high temperature and high humidity could cause stomatal conductance,transpiration rate and net photosynthetic rate dropped significantly.The results provided anevidence for the control of temperature and humidity in greenhouse grapes.

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Last Update: 2017-12-19