Correlation Analyses Between Resistance to Cladosporium Fulvum and PAL Activity in Tomato

doi:10.3321/j.issn:1000-7091.2003.01.022

Abstract

Abstract: Several varieties of tomato with di fferent degrees of resistance to cladosporium fulvum were used to study the changes in phenylalanine ammonia lyase(PAL) activi ty and lignin conten as well as their correlationship with the resistance degree of varie t ies and pathogeny during inoculation.PAL activity inc reased through inoculation.PAL peaks peared earl ier in resistant varieties than those in susceptible ones.There was signi ficant variet ies correlation between the seedling resistance and the increase of PAL ac t ivi ty during 36 hours after inoculation(r= 0.96).The changing speed of PAL activi ty as a resis tance inde x was applied successfully in identi fying the di fferentiation in physiological varieties of Cladosporium fulvum.

Key words: Tomato, Cladosporium fulvum, PAL, Resistance index

CLC Number:

S436.412

CUI Yan ling, ZHANG Huan. Correlation Analyses Between Resistance to Cladosporium Fulvum and PAL Activity in Tomato[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2003, 18(1): 79-82. doi: 10.3321/j.issn:1000-7091.2003.01.022.

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