|Table of Contents|

Effects of Low Temperature Stress on Anti-senility of Brassica chinensis(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年17
Page:
80-86
Research Field:
Publishing date:

Info

Title:
Effects of Low Temperature Stress on Anti-senility of Brassica chinensis
Author(s):
LIU Wei1; YANG Zaiqiang1; 2; XUE Sijia1; LI Yushan1
1.Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters，Nanjing University of Information Science & Technology，Nanjing，Jiangsu 210044;2.Jiangsu Key Laboratory of Agricultural Meteorology，Nanjing University of Information Science & Technology，Nanjing,Jiangsu 210044
Keywords:
Brassica campestris L.; low temperature stress; chlorophyll; membrane permeability; protective enzyme activity
PACS:
-
DOI:
10.11937/bfyy.20170016
Abstract:
Brassica campestris L. ‘Xinchangqing 1’was used as test material，the effects of low temperature stress on the chlorophyll，protective enzyme activity，and cell membrane permeability of Brassica chinensis were studied by using artificial environment control experiment.The results showed that the chlorophyll content of Brassica chinensis leaves decreased with the increasing of low temperature stress intensity and prolonged duration in the range from -6 ℃ to 0 ℃.SOD activity of leaf tissue increased with the decrease of stress temperature，the activities CAT and POD increased first and then decreased with the prolonging of treatment time.The content of MDA increased first，then decreased and increased again.The relative electrical conductivity of leaves increased with the decrease of temperature，while the lower the temperature，the greater the growth rate.The results showed that the anti-aging properties of the leaves of Brassica chinensis decreased with the decrease of temperature and the cell membrane permeability became worse.When the temperature was -4 ℃ for 9 hours，the cell viability was irreversibly damaged.Therefore，it was the critical temperature of structural damage of Brassica chinensis under low temperature stress.

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Last Update: 2017-09-29