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Comparative morphology of uredinia and urediniospores of six Puccinia species parasitic on Poaceae in Saudi Arabia
Authors:Zakaria AM Baka Dr  Hussien M Alwadie  Yasser S Mostafa
Affiliation:Institut für Phytopathologie Ascherslehen der Deutschen Akademie der Land Wirtschaftswissenschaften zu Berlin
Abstract:Uredinia and urediniospores of six Puccinia species growing on Poaceae in southwestern Saudi Arabia were morphologically compared by light and scanning electron microscopy (SEM). Puccinia cenchri, P. fragosoana and P. isiacae were recorded for the first time in Saudi Arabia. Many differences between uredinia and urediniospores of studied Puccinia species were recorded. These differences are not related to host plant but may be due to the species of Puccinia itself. Observations by SEM led to more information in distinguishing between these Puccinia species particularly the presence of paraphyses and density and length of spines.
Keywords:Puccinia  Rust fungi  Saudi Arabia  SEM  Urediniospores
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