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Effect of Low Temperature Stress on Physiological and Biochemical Characteristics of Three Varieties of Cucumber Seedlings(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2016年17
Page:
30-36
Research Field:
Publishing date:

Info

Title:
Effect of Low Temperature Stress on Physiological and Biochemical Characteristics of Three Varieties of Cucumber Seedlings
Author(s):
FANG YuanZHANG YahongWANG LihuiBAI Xiang
(Agricultural College,Ningxia University,Yinchuan,Ningxia 750021)
Keywords:
cucumbervarietyhypothermiaphysiological indexeffect
PACS:
-
DOI:
10.11937/bfyy.201617007
Abstract:
To discuss the problem of decline in vegetable yield and quality caused by the low temperature in greenhouse cultivation in Ningxia.With common cucumber ‘Del 99’‘Del 99’ graft seedlings,and ‘Del 100’ seedlings as materials.According to Ningxia winter greenhouse temperature,processing temperature set as 23 ℃/6 ℃ (day temperature/night temperature) and 23 ℃/17 ℃ recovery (simultaneously control) for intelligent artificial climate chamber simulation.Low temperature stress were sustained for 2,4,6,8,10 days then recovered for 2,4,6 days.The measurement contained the MDA content,relative conductivity,proline content and superoxide dismutase (SOD) activity in different temperatures and convalescent cucumber seedlings.The results showed that three different species of cucumber showed various damage under low temperature stress,‘Del 99’ and ‘Del 100’ cucumber seedlings could tolerate 6 ℃ of low temperature stress for 2-4 days then restored the state,‘Del 99’ graft seedlings could tolerate low temperature stress for 8-10 days to restore normal growth;use membership function comprehensive evaluation to evaluate seedling cold resistance in 3 species of cucumber seedlings:grafted ‘Del 99’>‘Del 100’>‘Del 99’.It aimed to explore the adaptability and tolerance of cucumber seedlings under low temperature conditions so that it could provide the basis for screening the suitable solar greenhouse cucumber species grown in local in winter and spring.

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Last Update: 2016-10-12