Dima Ali(1)*, Moussah Alsamarah(1), Ahmad Ahmad(2) and Bushra Rizk(2)
(1). Higher Institute for Environmental Research, Tishreen University, Lattakia, Syria
(2). Agricultural Scientific Research Center, Tartous, Syria.
(*Corresponding author: Dima Ali. E-Mail: dimaali473@gmail.com).
Received: 21/08/2022 Accepted: 29/03/2023
Abstract:
Fusarium oxysporum. f. sp. lycopersici is an economically important disease of the tomato crop, causing economic losses in severe cases up to 80%. The study aimed to isolate Fusarium oxysporum. f. sp. Lycopersici (FOL) from tomato plants grown in greenhouses in Tartous countryside, that showed wilt disease symptoms, and assessment its pathogenicity on some growth parameters against three hybrids of tomato. the research was carried out at the Center for Agricultural Scientific Research in Tartous during 2020-2021 season. A total of twelve isolates were identified as Fusarium oxysporum on the basis of their morphological, Among these, seven isolates (F1, F2, F3. F4, F5, F6, & F7) were test its pathogenicity on three hybrids (Sidra, Magdalena, Dumna). The colony appearance of isolates on PDA as highly variable. Indeed, white and yellowish white colony colors, and the result of pathogenicity were showed that the F1 isolate was the most virulent in an average 70. 33% while the isolate F6, and F7 were less virulent in an average 32 and 34.7% respectively.In another hand, the hybrid Dumna was the most sensitive for all isolates compared to the Sidra and Magdulen, also the isolate F1 showed a significant negative effect in the hybrid Dumna on plant height, number of leaves, fresh and dry weight of shoot and root compared with control
Keywords: Tomato, F. oxysoprum f. sp. lycopersici, Isolate, Growth, Hybrids.
Full paper in Arabic: pdf