|Table of Contents|

Effects of Exogenous Brassinolide on Cold Resistance of Walnut Under Low-temperature Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2025年6
Page:
72-81
Research Field:
Publishing date:

Info

Title:
Effects of Exogenous Brassinolide on Cold Resistance of Walnut Under Low-temperature Stress
Author(s):
CHEN Yike1; DAI Xingmiao1; TIAN Yi1; WANG Hongxia1; AN Xiuhong1; ZHANG Junpei2
(1.College of Horticulture，Hebei Agricultural University/Hebei Agricultural Technology Innovation Center for Mountainous Areas/National Northern Mountainous Agricultural Engineering Technology Research Center，Baoding，Hebei 071001；2.Research Institute of Forestry,Chinese Academy of Forestry，Beijing 100080)
Keywords:
walnut; BR; low temperature stress; physiological characteristics
PACS:
S 664.1
DOI:
10.11937/bfyy.20243937
Abstract:
Taking ‘Liaoning No.1’ walnut new shoots as the test material，brassinosteroid (BR) was sprayed and subjected to low-temperature stress treatment.The conductivity，moisture content，malondialdehyde，osmoregulatory substances，secondary metabolite content，and antioxidant enzyme activity were measured to study the effect of BR treatment on the cold resistance of walnut tender samples，in order to provide reference for walnut resistance to cold stress.The results showed that under low temperature stress，BR treatment increased the water content of walnut leaves，suppressed electrical conductivity and superoxide anion production rate，reduced the contents of MDA and hydrogen peroxide，significantly increased the contents of proline，soluble sugars，and soluble proteins，and improved the activities of antioxidant enzymes such as SOD，APX，POD，and GPX.Among the treatments，0.1 mg·L-1 BR was the best for improving the cold resistance of walnut branches.

References:

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Last Update: 2025-04-03