Relevance of gray mold disease on grapes in different regions of Al-Jabal Al-Akhdar, Libya.
DOI:
https://doi.org/10.54172/7pgt3861Keywords:
Gray mold disease, Botrytis cinerea fungus, Grape, Al-Jabal Al-khdar regions.Abstract
The current study was conducted from May to September 2023, and aimed to survey the grape gray mold disease in several regions of Al-Jabal Al-khdar including Al-Wesita, Masa, Al-Faidia, Al-Aoilia and Batta. Leaf samples were collected and examined. The results of isolation and identification after preparing slides of fungal growth, describing the pathogen Botrytis cinerea and taking its measurements under a light microscope, showed that the recorded thickness of old mycelium was 5-12.5 µm thickness of young myce-lium 3-7.5 µm, spore length 7.5-12.5 µm, spore width 5-7.5 µm and Conidiophore length 15-25 µm. The results of the statistical analysis indicated significant differences between the regions, where, the Al-aoilia region had the highest infection rate, 54%, in May. Whereas in Masa region had the lowest infection rate in September 0.22%. The density of infection ranged from 0.06 to 13.67 % at the same condi-tions.
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