|Table of Contents|

Study on Drought Tolerance of an Evergreen Broad-leaved Shrub Pachysandra terminalis(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2013年23期
Page:
83-87
Research Field:
Publishing date:

Info

Title:
Study on Drought Tolerance of an Evergreen Broad-leaved Shrub Pachysandra terminalis
Author(s):
YAN Hai-yan1；PAN Feng-ling2；DONG Ran1；ZHANG Shuang1；ZHAO Chao1；
1.College of Horticulture，Jilin Agricultural University，Changchun，Jilin 130118
2.Agricultural Environment Protection and Monitoring Station of Jiaohe City in Jilin Province，Jiaohe，Jilin 132500
Keywords:
Pachysandra terminalis; drought stress; physiological characteristics
PACS:
Q 948.12
DOI:
-
Abstract:
Taking three-year-old cuttage seedlings of Pachysandra terminalis as experimental material，through pot experiment of artificial drought stress and rewatered at different time in outdoor environment，the soil water content (SWC)，leaf relative water content (LWC)，the relative electric conductivity (REC)，malondialdehyde (MDA) content，superoxide dismutase superoxide dismutase (SOD) activity，peroxidase (POD) activity，soluble sugar (SS) content and free proline (Pro) contents variation of some physiological and biochemical indexes of Pachysandra terminalis were studied，the change of soil moisture and drought tolerance physiological response were explored.The results showed that all indexes were in relatively stable dynamic equilibrium except SS content in the control group during the entire experiment；SWC and LWC were down with the stress time，while REC，MDA content and SOD activity increased，POD activity presented the variation of the up-down-up，SS content increased and then decreased，Pro content decreased and then increased in the process of natural soil dehydration 42 d.The physiological indexes of 24 d and 30 d could quickly restore to the level of CK after rewatered.The recovery speed of the stress of it under 36 d was a little faster than 42 d.The recovery speed of the stress of it under 42 d was the slowest than the others.LWC had significantly positive correlation with SWC.REC，MDA，SS had significantly negative correlation with SWC.SOD，POD，Pro had significantly negative correlation with SWC.In brief，P.terminals was an excellent evergreen broad-leaved shrub with strong drought-endurance，REC，MDA，SS，LWC were effective evaluation indexes of the drought adaptability of P.terminalis. SOD activity，POD activity，Pro content could partly reflected the adaptability of it.

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Last Update: 2014-08-20