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Wilt causing fungi on broad bean

Authors: M.A. AL-Hamdany and M.M. Salih

Citation: 1986. Indian Phytopathology, 39: 620-622.

Abstract:

        Tissues from stem and crown regions of heavy infected broad bean plants were cultured PDA.  Eight different species of fungi ewer associated with diseased plants: Fusarium avenaceum, F. oxysporum, F. solani, F. acuminatum, F. equiseti, Ceratobasidium cornigerum, Pythium irrigulare and Gliocladium roseum.The occurrence percentages of these species were 44, 8, 12, 4, 16, 4, and 8, respectively. Thus, F. avenaceum was the most frequently species isolated from the diseased plants. The species was isolated from the vascular tissues. All species were able to infect broad bean but highest disease incidence, plant mortality, disease index and severity were observed on plant inoculated with F. avenaceum. Wilt symptoms developed in 7-10 days after inoculation. Out of 30 seedlings, 29 completely wilted and died on day 13th. Other fungi except F. oxysporum caused typical root rot. Regarding the percentages of dead plants and disease severity, there were no significant differences among F.solani, C.cornigerum, and P. Irregulare. F.acuminatum, F. equiseti, and G. roseum caused statistically no effects on broad bean.                                                                                        

Key words: Broad bean, Fusarium avenaceum, Wilt