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Fungi Associated With Rot Diseases Of Inflorescence And Fruit Of Date Palm In Riyadh Region, Saudi Arabia
Abdulaziz M. Al-Sharidi(1), and Ibrahim M. Al-Shahwan (2).
(1) Department of Extension and Agricultural Services, Ministry of Agriculture, Riyadh, Saudi Arabia
(2) Plant Protection Department, College of Agriculture, King Saud University, Riyadh, Saudi Arabia.
E-mail: ishahwan@ksu.edu.sa
Abstract
Diseased date palm inflorescence and fruit samples were collected during two consecutive growing seasons. Mauginiella scattae and Thielaviopsis paradoxa were isolated together from most diseased male and female inflorescence samples, while each fungus was isolated singly from other samples. It was noted that these inflorescence rots were abundant in the first season (1998) as a result of heavy rain falling during that season compared to the second season (1999 season). Only Alternaria alternata fungus was associated with date palm fruit rots during the two seasons (1997-1998). No fungal pathogen was isolated from the Maskanny cultivar fruit samples with speckled disease symptoms. This is the first report regarding the isolation of T. paradoxa and A. alternata from rotted inflorescences and fruits of date palm, in Riyadh Region, respectively.
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