در نهالستانها و خزانه هاي سوزني برگان استان كرمان Fusarium شناسايي و بررسي پراكندگي گونه هاي بيماري زاي

Identification and Study of Pathogenic Fusarium Species in Conifers Seedlings in Nurseries of Kerman Province

In years 2000 and 2001 field sampling from roots of conifers seedling in nurseries of Kerman province led to isolation and identification of four pathogenic Fusarium species as F. monilifflrme, Fʹ. solani, F. oxysporum, and F. lateritium. Population densities of these species were not uniform throughout the Province nurseries, but were more in Joupar district. F. monilifflrme had highest, 47%, and F. lateritium had the lowest, 11%, and F. solani, F. oxysporum had moderate abundance. Pathogenicity of the fungi was postulated on 20-days old seedlings of Pinus eldarica. This is also the first report on isolation and proof of pathogenicity of F. lateritium on Iranian conifers seedlings.