|Table of Contents|

Adaptive Physiological Response to Low Temperature Stress of Xanthoceras sorbifolia

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年04
Page:
73-79
Research Field:
Publishing date:

Info

Title:
Adaptive Physiological Response to Low Temperature Stress of Xanthoceras sorbifolia
Author(s):
YAN Xingrong1; 2; LI Xiang1; ZHANG Xingxing1; ZHANG Yunxiang1; 2; GUO Jinping1; 2
(1.College of Forest,Shanxi Agricultural University,Taigu,Shanxi 030801;2.Shanxi Key Laboratory of Northern Functional Oil Tree Cultivation and Research,Taigu,Shanxi 030801)
Keywords:
Xanthoceras sorbifolia seedling; low temperature stress; physiological index; responding mechanism
PACS:
-
DOI:
10.11937/bfyy.20191381
Abstract:
Thirty-day-old of seedings of Xanthoceras sorbifolia A099 seedlings were used as test materials.The method of contrast test was used to studied the change tendency of the relative conductivity (REC),malondialdehyde(MDA),soluble sugar content,soluble protein content,superoxide dismutase(SOD) activity,peroxidase(POD) activity,catalase(CAT) activity under the condition of 4 ℃ low temperature and different treatment time (0,4,12,24,48 hours).The aim was to study the explore the physiological responses of Xanthoceras sorbifolia seedlings under the low temperature stress.In the meantime,the resistance of Xanthoceras sorbifolia seedlings to low temperature stress could be evaluated.The results showed that the appearance and morphology of Xanthoceras sorbifolia seedlings were significantly affected under 4 ℃ low temperature stress.The REC and MDA contents of Xanthoceras sorbifolia seedlings increased in the early stage and decreased slowly in the late stage.The contents of soluble sugar and soluble protein increased,while the activities of POD and CAT activity increased at first and then decreased.The activities of SOD showed that the trend of decreasing at first and then rising.There was correlation among many indexes.Based on the principal component analysis,the cumulative contribution rate of 7 main physiological indexes was 90.715%,which could be classified into two independent comprehensive indexes.According to the membership function analysis,the ability of Xanthoceras sorbifolia seedlings to resist low temperature stress was 0 h＞48 hours＞24 hours＞12 hours＞4 hours.The results showed that Xanthoceras sorbifolia seedlings could resist the change of low temperature by self-regulation.

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Last Update: 2020-03-30