A Survey of Phytopathogenic Fungi and Oomycetes in Riyadh, Saudi Arabia

Arya Widyawan, Boy Valenza Damiri, Adyatma Irawan Santosa, Haris Setyaningrum

Abstract

A survey of phytopathogenic fungi and Oomycetes
was conducted in Riyadh, Kingdom of Saudi Arabia during
October 2008 – May 2009. Total of 223 samples were collected
from four regions; Al-Kharj, Oyaynah, Old Diriyah, and Al Amariyah. Isolation was done using Potato Dextrose Agar
(PDA). Infected parts were cut then sterilized in chlorox
(10%), then were put in petridish that contain PDA and
incubated at 25-27 °C. A total twelve genera of fungi and
single genera of Oomycetes were isolated from the infected
plants and identifi ed as Fusarium spp., Alternaria spp.,
Helmintosphorium (Bipolaris) spp., Sclerotium spp., Rhizoctonia
spp., Cladosporium spp., Mauginiella scattae, Erysiphe spp.,
Leveillula spp., Macrophomina phaseolina, Ustilago spp.,
Ulocladium spp., and Phytium spp.

Keywords

Phytopathogenic; Oomycetes; Riyadh; Al-Kharj; Oyaynah; Old Diriyah; and Al-Amariyah

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