|Table of Contents|

Effect of High Temperature and Different Air Humidity on Stomatal Characteristics for Tomato Leaves

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年06
Page:
23-31
Research Field:
Publishing date:

Info

Title:
Effect of High Temperature and Different Air Humidity on Stomatal Characteristics for Tomato Leaves
Author(s):
LI Jiajia1; YANG Zaiqiang1; 2; WEI Tingting1; HUANG Qinqin1; DING Yuhui1
(1.Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science & Technology,Nanjing，Jiangsu 210044;2.Jiangsu Key Laboratory of Agricultural Meteorology,Nanjing，Jiangsu 210044)
Keywords:
tomato; high temperature; stomatal characteristics
PACS:
-
DOI:
10.11937/bfyy.20193074
Abstract:
In order to study the effect of high temperature and different relative humidity on stomatal characteristics of greenhouse tomatoes,the three-factor orthogonal test of temperature,relative humidity and durations was carried out from June to September 2018 in the Agricultural Meteorological Laboratory in Nanjing University of Information Science and Technology. ‘Jinguan 5’ was used as material.The factor of temperature was set 4 levels,32 ℃/22 ℃,35 ℃/25 ℃,38 ℃/28 ℃ and 41 ℃/31 ℃(day/night temperature),and air relative humidity was set 3 levels,50%,70% and 90%,with 4 durations (3 d,6 d,9 d,12 d).Using 28 ℃/18 ℃ and 50%-55% humidity as control (CK),the stomatal characteristics of tomato leaves was determined under different treatments.The results showed that temperature had the most significant effect on stomatal characteristics of tomato leaves；the stomatal length,width,area,circumference and aperture increased with the increase of temperature in the range of 32-38 ℃；the stomatal density decreased and the stomatal opening ratio decreased first and then increased；the stomatal density was higher than CK under different treatments.With the increase of humidity,stomatal density increases,stomatal length and aperture first increased and then decreased,stomatal opening ratio first decreased and then increased,and stomatal width,area and circumference did not change significantly，which indicated that 70% relative humidity could alleviate the negative effect of high temperature stress on stomatal length and aperture of tomato leaves.This study revealed the variation of stomatal characteristics of plants in different environments,which could provided scientific basis for temperature and humidity regulation of greenhouse tomatoes.

References:

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Last Update: 2020-05-05