Three new Fusarium taxa isolated from gramineous plants in Iran (original) (raw)

In the course of a survey during growing seasons of 2002-04, various fields and pastures in 23 Iranian provinces were sampled. Some 1200 isolates of Fusarium from root, crown, stem and spike of various plants belonging to the family Poaceae were recovered using Nash-Snyder selective medium and purified on potato dextrose agar (PDA). Based on morphological characters, 35 Fusarium species were identified using PDA, SNA, KCl+WA and CLA media. Sporulation was encouraged using near UV light and darkness of 12h at 22-25˚ C. Among the species identified, Fusarium verticillioides and F. nygamai recovered from wheat, maize, rice and sugarcane had higher frequencies of 13.5 and 9%, respectively. Fusarium graminum and F. poae isolated from wheat, barley, rice, aegilops and oat had the lowest frequencies of 0.17 and 0.083%, respectively. F. heterosporum, F. pallidoroseum, F. pseudonygamai and F. sacchari from Poaceae are new taxa to the mycoflora of Iran.

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