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Effect of Organochlorine Pesticides on Pollution Characteristic and  Chlorophyll a Fluorescence of Muskmelon Fruit Surface(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年07
Page:
18-22
Research Field:
Publishing date:

Info

Title:
Effect of Organochlorine Pesticides on Pollution Characteristic and  Chlorophyll a Fluorescence of Muskmelon Fruit Surface
Author(s):
XUE Zhanjun; LI Hui; GAO Zhikui
(College of Horticulture,Agricultural University of Hebei,Baoding,Hebei 071001)
Keywords:
muskmelon; organo-chlorine pesticides; comprehensive pollution index; chlorophyll fluorescence
PACS:
-
DOI:
10.11937/bfyy.201707004
Abstract:
The 1 000 and 2 000 times dilution of fungicides (procymidone,FML) and insecticides (lambda-cyhalothrin,LZJ) of organo-chlorine pesticides were alone applied to spray young muskmelon fruits of ‘Jiuruihong’ at the 15th day after flowering,respectively.The chlorophyll fluorescence parameters were measured by Mini-Imaging-Pam to analysis and evaluate the pollution effects of organo-chlorine pesticides.The results showed that,compared with the control (water plus additives,CK),pollution symptom charactered by scatter and non-uniform spots distribution was observed on muskmelon fruit surface at the 7th day after spraying pesticides.Not only had the primary photochemical apparatus been destroyed,but also dynamic activity of carbon absorption had been reduced.Moreover,the excess energy dissipation produced by increase of Y(NPQ) and Y(NO) could cause photoinhibition or damage of PSⅡ and/or entire photosynthetic apparatus,led to the generation of thermal burning spots on muskmelon fruit surface.The comprehensive pollution index (CPI) calculated by using subordinative fuzzy function was used to evaluate pollution level of different organo-chlorine pesticides on muskmelon fruits.The greater pollution level was recorded in LZJ than FML,and the higher concentration related to LJZ practices attributed to severe pollution level.

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Last Update: 2017-04-17