|Table of Contents|

Effects of Exogenous 2,4-Epibrassinolide on Physiological and Biochemical Indexes in Rose Seedlings Under Low Temperature Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2025年9
Page:
87-94
Research Field:
Publishing date:

Info

Title:
Effects of Exogenous 2,4-Epibrassinolide on Physiological and Biochemical Indexes in Rose Seedlings Under Low Temperature Stress
Author(s):
KOU Wenhua1WANG Xia1JIA Wenze12
(1.Chongqing College of Humanities,Science & Technology,Chongqing 401527;2.College of Resources,Sichuan Agricultural University,Chengdu,Sichuan 611130)
Keywords:
roselow temperature stress24-epibrassionolidephysiological and biochemical indicatorsmembership function
PACS:
S 685.12
DOI:
10.11937/bfyy.20244095
Abstract:
Taking the rose cultivar‘Angela’ as the test materials,physiological and biochemical indicators determination and membership function analysis method were used,the effects of different concentrations of 2,4-epibrassionolide (EBR) on the physiological and biochemical indicators of rose under low temperature stress were studied,in order to provide a reference for the planting and promotion in the lower temperature areas of rose seedlings.The results showed that spraying EBR under low temperature stress could significantly increase the maximal quantum yield of PSⅡ (Fv/Fm) value and the decrease rate of relative water content (RWC),relief the rate of increase in relative conductivity (REC) and malondialdehyde (MDA) content in rose seedling leaves.At the same time,the growth rate of proline (Pro) content,soluble sugar (SS) content and soluble protein (SP) content were alleviated.In addition,the increase rate of superoxide dismutase (SOD) activity,peroxidase (POD) activity,and catalase (CAT) activity were also significantly reduced.In conclusion,the external application of EBR could significantly improve the cold resistance of rose seeding,and it was further found that the best effect of 0.4 mg·L-1EBR was applied by membership function analysis.

References:

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Last Update: 2025-05-16