|Table of Contents|

Correlation Between SPAD and Chlorophyll Content in Infected Tomato Leaves at Different Temperatures

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2022年18
Page:
8-15
Research Field:
Publishing date:

Info

Title:
Correlation Between SPAD and Chlorophyll Content in Infected Tomato Leaves at Different Temperatures
Author(s):
XIANG Qian1; WU Lei2; XU Ruohan1; YANG Zaiqiang1; 3
(1.Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science and Technology,Nanjing,Jiangsu 210044;2.Jingbo Agrochemical Technology Co.Ltd.,Binzhou,Shandong 256500;3.Jiangsu Key Laboratory of Agrometeorology,Nanjing,Jiangsu 210044)
Keywords:
tomato; Botrytis cinerea; chlorophyll content; SPAD value
PACS:
-
DOI:
10.11937/bfyy.20220644
Abstract:
Taking the tomato ‘Kaisa’ as the test material,the relationship between the SPAD value and chlorophyll content of the leaves infected by tomato gray mold was studied by SPAD-502 chlorophyll meter and spectrophotometer method,in order to provide reference for the occurrence and development of tomato gray mold.The results showed that SPAD values of healthy tomato leaves,15 ℃ infected tomato leaves and 25 ℃ infected tomato leaves were significantly correlated with chlorophyll a content,chlorophyll b content and total chlorophyll content.When tomato leaves were infected by Botrytis cinerea,their SPAD value and chlorophyll content decreased,and the infection of Botrytis cinerea on tomato leaves at 25 ℃ was more serious than that at 15 ℃.The best fitting model of healthy tomato leaves was the cubic regression equation.The best fitting models of chlorophyll content and SPAD value of tomato leaves infected at 15 ℃ and 25 ℃ were fitted best with linear regression equation and exponential regression equation respectively,and the correlation coefficient reached more than 0.880.

References:

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Last Update: 2022-11-23