|Table of Contents|

Effect of Downy Mildew on Photosynthesis Characteristics of Cucumber in Greenhouse(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年17
Page:
99-102
Research Field:
Publishing date:

Info

Title:
Effect of Downy Mildew on Photosynthesis Characteristics of Cucumber in Greenhouse
Author(s):
QIN Xuefeng1; LIANG Haiyan2; YU Hao1; LI Weihai1
(1.Henan Institute of Science and Technology，Xinxiang，Henan 453003；2.Xinxiang Medical University，School of Public Health,Xinxiang,Henan 453003)
Keywords:
downy mildew; cucumber; photosynthesis characteristics; chlorophyll
PACS:
-
DOI:
10.11937/bfyy.201517025
Abstract:
Using LI-6400 photosynthesis system and spectrophotometry,the photosynthetic rate and chlorophyll content of cucumber ‘Jinyou 35’,that infected by downy mildew were measured respectively.The effect of cucumber downy mildew on photosynthesis of cucumber in greenhouse were studied.The results showed that photosynthetic characteristics factors decreased significantly with the severity increasing，excepting the intercellular CO2 concentration and temperature of leaves.Along with the downy mildew increasing seriously，the light compensation point elevated gradually，which could attain 41.533 7 μmol?m-2?s-1 ultimately，while the apparent quantum yield declined.The maximum of light saturation point was 1 630 μmol?m-2?s-1 at the middle stage，the earlier period and the later period were lower.Chlorophyll content decreased gradually with downy mildew getting worse.

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Last Update: 2015-10-10