Abstract
Twentyfour samples of naturally mosaic infected sugarcane plants were collected from Giza and Kena Governorates of A. R. E. They were identified as SCMV strain D and its substrains Da and Dc according to their physical properties in diseased samples and symptoms produced on differential hosts. The two substrains are recorded for the time in Egypt as incitants of this disease. Distribution frequency of strains varied with locality. Strain D was distributed more in Giza Governorate than in Kena Governorate while frequency of substrains Dc and Da was of a reverse trend. Dilution end point, thermal inactivation point and longevityin vitro for strain D and its substrains Da and Dc ranged 10−3–10−6, 50°C–63°C, and up to 48 h respectively. These properties varied also within each strain.
Zusammenfassung
In den ägyptischen Distrikten Giza und Kena gesammelte Proben von Zuckerrohrpflanzen, die das Mosaikvirus (Sugarcane Mosaic Virus, SCMV) enthielten, ergaben den SCMV-Stamm D mit seinen Unterstämmen Da und Dc. Die Bestimmung erfolgte nach physikalischen Merkmalen und nach den am Wirt induzierten Symptomen. Die Stärke des Auftretens der 3 Pathogentypen war örtlich verschieden. Der Stamm D war stärker in Giza als in Kena, bei den Unterstämmen Da und Dc war es umgekehrt. Verdünnungsgrenzpunkt, thermaler Aktivitätsgrenzpunkt und Lebensdauerin vitro rangierten für die 3 Pathogentypen zwischen 10−3 bis 10−6, 50°C bis 63°C sowie bis zu 48h. Diese Merkmale variierten innerhalb jedes der 3 Stämme bzw. Unterstämme.
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El-Nasr, A.M.A., Sellam, M.A., Abd-Elrazik, A.A. et al. Zur Bestimmung von Zuckerrohrmosaikvirus-Stämmen In Ägypten. Anz. Schadlingskde., Pflanzenschutz, Umweltschutz 54, 41–45 (1981). https://doi.org/10.1007/BF01905918
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DOI: https://doi.org/10.1007/BF01905918