Pathogen identification and biological characteristics of pathogens of tomato leaf spot and fruit spot disease

doi:10.14088/j.cnki.issn0439-8114.2019.22.023

Abstract

Abstract: Pathogenic fungi causing tomato leaf spot and fruit spot disease were isolated from tomato leaves and fruits in greenhouse of Wuhan city. The pathogen identification and biological characteristics were studied. The results showed that the pathogen of tomato leaf spot and fruit spot disease was identified as Corynespora cassiicola by morphological observation, pathogenicity determination and molecular identification. The biological characteristics of the strain showed that the pathogen liked light, the optimum temperature for growth was 25~30 ℃, the optimum pH was 7~9, and the weak alkaline growth environment was preferred. Among the five carbon sources, glucose had the best utilization effect, and potassium nitrate had the best utilization effect among the five nitrogen sources.

Key words: tomato leaf spot, tomato fruit spot disease, Corynespora cassiicola, biological characteristics

CLC Number:

S436.411

YANG Shao-li, WU Ren-feng. Pathogen identification and biological characteristics of pathogens of tomato leaf spot and fruit spot disease[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(22): 104-107.

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