|Table of Contents|

Effects of Exogenous Salicylic Acid on Physiological Characteristics of Seedlings Under Drought Stress of Platycodon grandiflorus

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年16
Page:
121-125
Research Field:
Publishing date:

Info

Title:
Effects of Exogenous Salicylic Acid on Physiological Characteristics of Seedlings Under Drought Stress of Platycodon grandiflorus
Author(s):
SUN Xiaochun; HUANG Wenjing; LI Bo; WANG Li; TANG Zhishu
(Shaanxi Collaborative Innovation Center of Chinese Medicinal Resources Industrialization/Shaanxi Province Key Laboratory of New Drugs and Chinese Medicine Foundation Research,Shaanxi University of Chinese Medicine,Xianyang,Shaanxi 712083)
Keywords:
Platycodon grandiflorus seedling; salicylic acid; antioxidant enzyme; plant hormones
PACS:
-
DOI:
10.11937/bfyy.20184082
Abstract:
Platycodon grandiflorus seedlings were used as materials,and 20% PEG-6000 was used as artificial drought stress simulation,the effects of exogenous salicylic acid on antioxidant enzyme activities,osmotic adjustment substances and plant endogenous hormones were studied.The results indicated that,exogenous salicylic acid improved superoxide dismutase (SOD),peroxidase (POD),and Ascorbate peroxidas(AsA-POD),and increased the contents of proline and soluble sugar.On the seventh day of adding exogenous salicylic acid under drought stress,the content of abscisic acid increased and gibberellin decreased.The results indicated that,exogenous salicylic acid improves the resistance to drought stress of Platycodon grandiflorus seedlings by increasing antioxidant enzyme activity and osmotic adjustment substance content,and regulating plant endogenous hormones.

References:

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Last Update: 2019-08-30