Effects of Herbicide Glyphosate on Photosynthetic and Chlorophyll Fluorescence Characteristics of Grapes
《北方园艺》[ISSN:1001-0009/CN:23-1247/S]
- Issue:
- 2018年14
- Page:
- 57-62
- Research Field:
- Publishing date:
Info
- Title:
- Effects of Herbicide Glyphosate on Photosynthetic and Chlorophyll Fluorescence Characteristics of Grapes
- Author(s):
- HOU Lili1; QIU Yi2; SUN Huimin2; LIN Hezhou2; CHEN Liusheng1; WANG Shaoshan1
- (1．Key Laboratory of Universities of Xinjiang Uygur Autonomous Region for Oasis Agricultural Pest Management and Plant Protection Resource Utilization/College of Agriculture，Shihezi University，Shihezi，Xinjiang 832000；2．Forestry Work Station of the Eighth Division，Xinjiang Production and Construction Corps，Shihezi,Xinjiang 832000)
- Keywords:
- herbicide; glyphosate; grape; photosynthetic characteristics; chlorophyll fluorescence characteristics
- PACS:
- -
- DOI:
- 10.11937/bfyy.20174045
- Abstract:
- ‘Merlot’ grape was taken as test material.Under potting conditions，the grape leaves were treated with different dilution ratio of glyphosate（1∶160,1∶140,1∶120,1∶100,1∶80）.The chlorophyll content of grape leaves was measured at 3 days，6 days，9 days and 14 days after treatments，the chlorophyll fluorescence parameters and gas exchange parameters in the leaves were measured at the 14th day after treatments，the effects of herbicide glyphosate on the photosynthetic characteristics and chlorophyll fluorescence characteristics of grape were studied.The results showed that chlorophyll a content，chlorophyll b content and total contents of the grape leaves decreased as glyphosate concentration and time increased；leaves of grapes photosynthetic rate (Pn)，stomatic conductance (Gs)，transpiration rate(Tr)，water use efficiency(WUE)，maximum photochemical efficiency of photosystemⅡ(Fv/Fm)，actual photochemical efficiency of photosystem Ⅱ(ФPSⅡ)，PSⅡpotential activity(Fv/Fo)，photochemical quenching（qP）decreased as concentration of glyphosate increaed；but inter-cellular CO2 concentration(Ci) non-photochemical quenching（qN）increased as concentration of glyphosate increased.Herbicide glyphosate had a significant effect on the photosynthetic characteristics of grapes，and showed the relationship of the significant positive correlation between concentration and photosynthetic influence.Under the stress of glyphosate，the photosynthetic was inhibited，and PSII was destroyed，at the same time photosynthetic electron transport was suffocated in leaves of grape.
Last Update: 2018-08-07