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Physiological Responses and Adaptability of Sedum nicaeense Under Saline Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年19
Page:
121-126
Research Field:
Publishing date:

Info

Title:
Physiological Responses and Adaptability of Sedum nicaeense Under Saline Stress
Author(s):
CHENG Hongyan1YUAN Minshu2SHEN Yufang1
1.College of Resource and Environment,Northwest A & F University/State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau,Yangling,Shaanxi 712100;2.College of Forestry,Northwest A & F University,Yangling,Shaanxi 712100
Keywords:
saline stressSedum nicaeense All.physical characteristics
PACS:
-
DOI:
10.11937/bfyy.20170132
Abstract:
In order to lay a theoretical foundation for enlarging its green area in mild salinization,the physiological response and adaptability of Sedum nicaeense under salt stress was explored.In this study,seedlings of Sedum nicaeense were treated with different concentrations of sodium chloride (0,2.5,3.5,4.5,5.5,6.5,7.5,8.5,9.5 mg?g-1),respectively.The free proline content,malondialdehye content,chlorophyll content,leaf area,leaf water content,root and shoot ratio and chlorophyll fluorescence parameter(Fv/Fm) were measured to evaluate the salt tolerance of Sedum nicaeense seedlings.The results showed that when the concentrations of sodium chloride was less than 8.5 mg?g-1,it was conducive to the growth of seedlings of Sedum nicaeense,especially when the concentrations of sodium chloride was 3.5 mg?g-1,Sedum nicaeense were in the best growth state.Once concentration of sodium chloride was higher than 8.5 mg?g-1,it could had serious effects on their normal growth,which would be of great significance for the promotion of Sedum nicaeense in salinization area.

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Last Update: 2017-10-12