|Table of Contents|

Effects of Exogenous Hydrogen Sulfide on the Flowering Process and Physiological Characteristics of Strawberry Under Temperature Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年14
Page:
37-42
Research Field:
Publishing date:

Info

Title:
Effects of Exogenous Hydrogen Sulfide on the Flowering Process and Physiological Characteristics of Strawberry Under Temperature Stress
Author(s):
WANG Aiguo1; JIANG Qianqian2; WANG Shuzi3; WANG Guoqing2; WANG Kailong2; YANG Jiaxin2
(1.Agricultural Technology Promotion Center of Weifang，Weifang，Shandong 261000；2.Key Laboratory of Biochemistry & Molecular Biology in Universities of Shandong，Weifang University，Weifang，Shandong 261000；3.Science and Technology Cooperation Center，Fangzi District，Weifang，Shandong 261000)
Keywords:
strawberry; temperature stress; hydrogen sulfide; flowering; chlorophyll fluorescence
PACS:
-
DOI:
10.11937/bfyy.20220268
Abstract:
The strawberry ‘Zhangji’ plants were used as test material.The effects of sodium hydrosulfide (H2S) on the flowering process，the malondialdehyde (MDA) content and antioxidant enzyme activities of flower，the chlorophyll content and chlorophyll fluorescence properties of leaf under temperature stress were investigated by spraying 200 μmol?L-1 sodium hydrosulphide (NaHS，H2S donor)，in order to provide reference for the development of effective defense technology for strawberry temperature damage.The results showed that the low temperature of 4 ℃ significantly inhibited the opening of strawberry flower organs and caused damage to the flowers；the high temperature of 35 ℃ promoted the the opening of strawberry flower organs，shortened the flowering period，and caused the anthers to brown and shriveled.Under temperature stress，the MDA content and the activities of antioxidant enzymes (SOD，POD and CAT) of flower organs were significantly increased；the chlorophyll content，maximum photochemical efficiency (Fv/Fm)，potential photochemical efficiency (Fv/Fo)，actual photochemical efficiency (ΦPSⅡ)，and non-photochemical quenching coefficient (NPQ) of leaves were all significantly reduced.The exogenous hydrogen sulfide could improve the chlorophyll content，enhance the utilization rate of light energy，maintain photosynthesis，increase the activity of antioxidant enzymes and decrease the MDA content，alleviate the damage to flowers caused by low temperature delay the early opening of flowers caused by high temperature stress and maintained anther activity，thereby improving the stress resistance of strawberries.

References:

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Last Update: 2022-09-06