|Table of Contents|

Effects of Different pH of ALA Treatments on Photosynthesis and Chlorophyll Fluorescence Characteristics of Grape Leaves

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年15
Page:
30-36
Research Field:
Publishing date:

Info

Title:
Effects of Different pH of ALA Treatments on Photosynthesis and Chlorophyll Fluorescence Characteristics of Grape Leaves
Author(s):
LIU Lianling; SUN Junli; ZHAO Baolong
(College of Agronomy,Shihezi University/Key Laboratory of Characteristic Physiology and Germplasm Resources Utilization of Fruits and Vegetables,Shihezi,Xinjiang 832000)
Keywords:
5-aminolevulinic acid; pH; ‘Cressen’ grapes; photosynthetic parameters; fluorescence characteristics
PACS:
-
DOI:
10.11937/bfyy.20183953
Abstract:
‘Crimson’ seedless grape in the solar greenhouse was used as the test material,during the fruit expansion period (June 18th),before the color change period (July 2th),and the color change period (July 12th) the leaves were subjected to ALA spray treatment with water and different pH (5.5,6.0,6.5,7.0) to study the effects of different pH of ALA treatments on photosynthesis and chlorophyll fluorescence characteristics of grape leaves.The results showed that different pH of ALA treatments increased photosynthetic parameters including net photosynthetic rate (Pn),stomatal conductance (Gs),intercellular CO2 concentration (Ci) and transpiration rate (Tr),and fluorescence parameters including maximum fluorescence(Fm),potential photochemical activity (Fv/Fo), maximum photochemical efficiency (Fv/Fm),actual photochemical efficiency (Y(II)),photochemical quenching coefficient (qP),non-photochemical quenching coefficient (NPQ),reduced the minimum fluorescence (Fo),in which the effect of ALA treatment at pH 5.5 was the most significant.

References:

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Last Update: 2019-08-15