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Effect of Drought Stress Simulated by PEG-6000 on Physiological Characteristics of  Scutellaria scordifolia F. Seedling(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2013年12期
Page:
65-68
Research Field:
Publishing date:

Info

Title:
Effect of Drought Stress Simulated by PEG-6000 on Physiological Characteristics of  Scutellaria scordifolia F. Seedling
Author(s):
YUE Hua; ZHANG Wen-juan
College of Landscape Architecture,Northeast Forestry University,Harbin,Heilongjiang 150040
Keywords:
seedling of Scutellaria scordifolia F.; PEG-6000; drought stress; physiological characteristics
PACS:
S 601
DOI:
-
Abstract:
Using seedling of Scutellaria scordifolia F. as materials,the effect of drought stress by different mass concentrations(10％,20％ and 30％) of PEG6000 on five physiological characteristics of Scutellaria scordifolia F.were studied,and its drought resitance was evaluated.The results showed that Scutellaria scordifolia lost ornamental value after 20 hours of stress by 20％and 30％PGE,respectively.Leaf relative water content and cell membrane permeability correlate with stress positively，that could not be restored to normal levers after again water.MDA content accumulated stress prolonging,that concentration of 30％PEG-6000reached the top at 20 hours.Membrance suffered huge damage.At 12 hours the protective enzyme system to scaveng oxygen free radicals resist drought stress.SOD activity reached its peak in the 12 hours than declining.30％of PEG-6000 had the largest decline,it was difficult to recover after rewatering.The results showed that Scutellaria scordifolia had a strong ability to resist drought stress,and it was able to adapt to 16～20 hours of stress by 20％and 30％PEG-6000through self-regulation.

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Last Update: 2014-08-19