|Table of Contents|

Effect of Sodium Nitroprusside on Growth and Characteristic of Photosynthesis and Chlorophyll Fluorescence of Cucumber Seedlings Under Hypoxia Stress

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年16
Page:
23-28
Research Field:
Publishing date:

Info

Title:
Effect of Sodium Nitroprusside on Growth and Characteristic of Photosynthesis and Chlorophyll Fluorescence of Cucumber Seedlings Under Hypoxia Stress
Author(s):
WU Xiaolei1; JIAO Xiaocong2; LIU Huilan1; MA Xiaopeng1; GAO Hongbo1
(1.College of Horticulture，Hebei Agricultural University，Baoding,Hebei 071000;2.College of Horticulture，Northwest A&F University，Yangling,Shaanxi 712100)
Keywords:
cucumber; SNP; hypoxia stress; growth; photosynthetic parameters; chlorophyll fluorescence parameters
PACS:
-
DOI:
10.11937/bfyy.20183917
Abstract:
The study was conducted to investigate the effects of exogenous NO on growth，photosynthetic parameters and chlorophyll fluorescence parameters of cucumber seedlings in nutrient solution by adding 0.1，0.3 and 0.5 mmol?L-1 sodium nitroprusside(SNP) as the NO donor under hypoxia stress.The results showed that the growth，photosynthesis and photosynthetic system activity of cucumber seedlings were inhibited under hypoxia stress.After adding different concentrations of SNP，the growth and photosynthesis of cucumber seedlings promoted significantly，photosynthetic system activity increased significantly，and the injury had been effectively alleviated under hypoxia stress,plant height，stem diameter，root length，roots volume，roots activity，shoot fresh weight,fresh weight and dry weight of roots,Pn,Gs and WUE all increased significantly.The indexes of Fv/Fm,ETR,qP,ΦPSⅡ higher improved dramatically,and NPQ decreased dramatically.One of the most suitable adding concentration of SNP was 0.1 mmol?L-1.

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Last Update: 2019-08-29