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Effect of Different Nitrogen Levels on the Several Physiological Indicators and Reactive Oxygen Removal System of Color Pepper(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年04
Page:
17-21
Research Field:
Publishing date:

Info

Title:
Effect of Different Nitrogen Levels on the Several Physiological Indicators and Reactive Oxygen Removal System of Color Pepper
Author(s):
XIAN Kai-mei1; LIU Hui-ying2
(1.The Agricultural Technique Extension Station of Xinjiang Uygur Autonomous Region，Urumqi，Xinjiang 830049;2.Shihezi University,Shihezi,Xinjiang 832000)
Keywords:
nitrogen level; color pepper; physiological indexes; active oxygen removal system; effect
PACS:
-
DOI:
10.11937/bfyy.201504004
Abstract:
For soilless cultivation of greenhouse pepper 2.5，5.0，10.0 (CK)，15.0 and 20.0 μmol/L (the following N2.5，N5.0，N10.0，N15.0 and N20.0) five different levels of nitrogen treatment were set，to measure several physiological indexes (electrolyte permeability，soluble sugar，proline，soluble protein and malondialdehyde content) and active oxygen removal system (reduced glutathione，ascorbic acid content，catalase，superoxide dismutase (SOD) and peroxidase (POD) activity) parameter indicators and so on，in order to provide reference for soilless cultivation management for color pepper.The results showed that in the 5.0-15.0 μmmol/L concentration，reduced glutathione,ascorbic acid content and antioxidant enzyme activity were higher，electrolyte permeability and malondialdehyde content were lower and were the highest under N15.0 treatment (performance (plant) the strongest antioxidant capacity)，followed by N10.0 and N5.0 processing，the lowest was N2.5 processing，it showed that the level of plant antioxidant capacity in this processing was the worst.When the application rate was 2.5 μmol/L or 20 μmol/L，the plant growth，yield and plant membrane integrity，content of antioxidants in the body decreased and membranous peroxide degree increased.

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Last Update: 2015-03-26