European Journal of Botany, Plant Sciences and Phytology (EJBPSP)

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The Causative of Leaf Spot on Carob- Isolation and Identification

Abstract

The main objective of the present study was to isolation and identification of the cause carob leaves spots. In this study, a total of 4 fungal isolates (referred as A1, A2 and A3) were obtained from symptomatic leaves collected from carob trees distribution in El-Beida city and its suburbs. The pathogen associated with the disease was identified as Alternaria alternata (Fr.) Keissl. All the isolates produced olive-brown to medium-brown conidia with obclavate shape, but the isolates varied in size (length) of conidia, the number of cells per conidium, rate of growth and sporulation on media. Koch´s postulate was verified by inoculating healthy leaves. This was the first report of leaf spot disease of carob caused by Alternaria alternata in Libya.

Keywords: A. alternata, Carob, Libya., leaf spot, pathogenicity, symptomatology

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Email ID: submission@ea-journals.org
Impact Factor: 6.77
Print ISSN: 2055-8139
Online ISSN: 2055-8147
DOI: https://doi.org/10.37745/ejbpsp.2014

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