Fungi associated with a dry invasive white patches on trunks of economic fruit trees in south-west Nigeria
| Autor: | M.T. Ayeni, W.A. Lamidi, S.B. Akinde |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Aspergillus biology Theobroma food and beverages General Medicine Orange (colour) biology.organism_classification 01 natural sciences 03 medical and health sciences Horticulture 030104 developmental biology Fungal Counts Aspergillus kola-nut sweet orange Theobroma cacao Fungal morphology Citrus × sinensis Fruit tree 010606 plant biology & botany |
| Zdroj: | African Crop Science Journal; Vol 27, No 1 (2019); 1-12 |
| ISSN: | 1021-9730 2072-6589 |
| Popis: | An unprecedented number of fungal and fungal-like diseases are the main threat to the diversity and productivity of economic fruit trees in south-west Nigeria. The objective of this study was to investigate the fungi associated with dry invasive whitish patches, noticeable on trunks and branches of cocoa (Theobroma cacao), kola-nut ( Cola spp.) and sweet orange ( Citrus sinensis ) trees prevalent in south-west Nigeria. A total of 108 whitish patch scraped samples were aseptically obtained from the affected cocoa, kola-nut and sweet orange trees in Osogbo, Ife, Ejigbo and Ilesha plantations in south-west Nigeria for this study. Viable fungal populations, were determined using the spread-plate techniques; and pure fungal isolates were identified through their morphological appearance, microscopic features and sporing structures. Mean viable fungal count in the samples ranged from 3.85 x 104 ± 0.00 to 9.75 x 103 ± 0.00 CFU g-1. Viable fungal counts were significantly different (P < 0.05) between fruit tree species and across locations. A total of 52 fungal species belonging to 21 genera were isolated, with Aspergillus and Penicilliumas predominating and occurring at 23 and 17%, respectively. Other isolated genera included seven from cocoa trees; ten from kola-nut trees and five from sweet orange trees. There is need for appropriate control strategies to prevent further spread in contiguous plantations. Key Words: Aspergillus , kola-nut, sweet orange, Theobroma cacao |
| Databáze: | OpenAIRE |
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