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Effect of Exogenous Ca2+on Physiological Indexes inPoplar Seedlings Under Low Temperature Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年11
Page:
55-59
Research Field:
Publishing date:

Info

Title:
Effect of Exogenous Ca2+on Physiological Indexes inPoplar Seedlings Under Low Temperature Stress
Author(s):
LI Xiao-dong1FAN Jun-feng1QIU Xing1ZHANG Yao-hong2SHI Yu-bo3
.College of Forestry,Northwest Agricultural and Forest University,Yangling,Shaanxi 712100;2.Northwest Institute of Forest Inventory,Planning and Design,Xi’ an,Shaanxi 710048;3.Changshan Tea Oil Research Institution,Changshan,Zhejiang 324200
Keywords:
poplarCa2+low temperature stresscold tolerancemembrane injury rate
PACS:
S 792.11
DOI:
10.11937/bfyy.201511015
Abstract:
The young seedlings of ‘Shaanlin No4’ and‘07-69×P.cathayana 1’ were used as experiment materials.In this research,CaCl2 concentrations of 0,5,10,15,20 mmol/L were sprayed before treated under 4℃ stress for 2 days.Then,physiological indexes including membrane injury rate,activities of antioxidant enzymes (SOD and POD),contents of MDA and soluble protein were measured to investigate the effect of different Ca2+concentration on cold tolerance related physiological indexes in poplar under low temperature stress.The results showed that membrane injury rate and MDA content were decreased under 10 mmol/L CaCl2 treatment,while antioxidant enzymes (SOD and POD) and soluble protein were increased significantly.In conclusion,it was made sense that exogenous Ca2+could effectively improve the cold tolerance of poplar seedlings and alleviate the damage caused by low temperature stress.

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Last Update: 2015-08-06