|Table of Contents|

Effects of Exogenous ABA on Stomatal Characters and Photosynthetic Characteristics of Rhododendron chrysanthum Pall. Under Low Temperature Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年01
Page:
72-79
Research Field:
Publishing date:

Info

Title:
Effects of Exogenous ABA on Stomatal Characters and Photosynthetic Characteristics of Rhododendron chrysanthum Pall. Under Low Temperature Stress
Author(s):
ZHANG Qingyi; LI Yue; DONG Jiawei; XU Hongwei; ZHOU Xiaofu
(Jilin Provincial Key Laboratory of Plant Resource Science and Green Production,Jilin Normal University,Siping,Jilin 136000)
Keywords:
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PACS:
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DOI:
10.11937/bfyy.20213003
Abstract:
Rhododendron chrysanthum Pall. was used as the test materials,after 4 days of pretreatment with ABA,and 2 days of culture under normal temperature and low temperature stress,the chlorophyll fluorescence content and stomata size were measured respectively. The effects of PSⅡ photosynthetic characteristics and stomatal traits of Rhododendron chrysanthum Pall.on exogenous ABA under low temperature stress were studied,in order to provide a reference basis for exploring the mechanism of cold resistance.The results showed that the normal growth of Rhododendron chrysanthum Pall. seedlings were significantly inhibited by low temperature stress,the maximum photochemical efficiency (Fv/Fm),photochemical quenching coefficient (qP),nonphotochemical quenching (NPQ) and potential activity (Fv /Fo) of PSⅡ decreased significantly (P<0.05). Under low temperature stress,exogenous ABA could significantly alleviate the effects on photosynthetic capacity of Rhododendron chrysanthum Pall. leaves,optimize the gas exchange

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Last Update: 2022-04-01