THESIS ON MANGO ANTHRACNOSE

Anthracnose has been reported in many parts of the world where the climate is suitable for mango production to be the most important field and postharvest disease of the crop Sangeetha and Rawal, ; Chowdhury et al. Please use this identifier to cite or link to this item: Trees treated with fungicide during fruiting retained mean fruit of A field survey was carried out in 12 administrative districts of Ghana in and to assess the disease incidence and severity. When viewed under the microscope, conidia were hyaline; single celled and cylindrical with obtuse ends. First report of Colletotrichum acutatum causing ripe rot of grape in China. Botany, Production and Uses, Litz, R.

A significant reduction in the price of mango was found associated with anthracnose-infected fruits. In this study, field survey of fruit rot showed that soft-brown rot of mango was widely encountered. Several workers including Rawal and Sangchote implicated these three fungal species in earlier reports, to be the fungi responsible for postharvest diseases of mango associated with fruit rotting during ripening. Another one was sprayed with sterile distilled water as a control following Okigbo and Osuinde method slightly modified. Fruits produced from trees in those orchards are commonly found associated with anthracnose-infected fruits that rot so quickly soon after harvest. This present study was initiated to further investigate the etiology of mango fruit anthracnose, its effect on yield and market values in mango-growing areas of the humid forest region of Southwestern, Nigeria. Also, on some fruits, the symptom was tear-stain black lesions that ran from the stem-end of the fruit to the basal end.

Isolated colonies were, sub-cultured into fresh plates until pure cultures were obtained. Isolation was carried out in both the Nigeria Agricultural Quarantine Service and in International Institute of Tropical Agriculture, plant pathology laboratories. The prices of both anthracnose infected mango fruits and non-infected ones were obtained from 4 major markets located in Ojo in Ibadan, Ogbomosho fruit market, Ile-Epo in Lagos and Oja Mmango in Ayetoro.

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The experiments consisted of 5 trees with each tree representing a replicate. The fruits were inoculated with spore suspension of Colletotrichum gloeosporioides prepared following the procedures of Sivakumar et al. The disease was found to cause shriveling of fruit panicles and blemishes on skin of fruits resulting in yield loss of 4. The pathogen causing the disease was isolated from the diseased lesions and characterised using cultural, morphological, biochemical mqngo molecular approaches.

thesis on mango anthracnose

Results 1 – 1 of 1. Severe anthracnose-infected fruits were no longer attractive and acceptable in the local markets let alone international market.

Artificial inoculations confirmed the pathogenicity of isolates of the pathogen on mango and induced similar disease level on Haden, Irwin, Julie, Anthradnose, Kent, Palmer and Tommy Atkins cultivars of mango. These isolates differed in their ability to produced typical anthracnose symptoms w.

Characterisation of the casual agent of mango anthracnose dis..|INIS

Two mango tree branches randomly selected at the upper canopy were sprayed with spore suspension of Colletotrichum gloeosporioides using hand sprayer. Colletotrichum gloeosporioidesthe causal agent of mango fruit anthracnose disease a Top view of colony in a petri dish b Reverse view and thesjs Microscopic view. Mango Growing in the Florida Home Landscape. Other fungi isolates recovered were Alternaria alternataAlternaria tenuissimaAspergillus flavusAspergillus fumigatusAspergillus nidulansAnthrcanose nigerBipolaris hawaiiensisBotryodiplodia theobromaeCochliobolus nodulosusCurvularia lunataEntyloma species, Fusarium dimerumFusarium longipesFusarium verticillioides Table 1.

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Biology and control of stem-end rot pathogens of mango. Stem-end rot of mangoes in Australia: Management of Fungal Diseases in Tropical Fruits. Samples of symptomatic leaves, panicles and fruits of mango were, collected from mango orchards and home gardens in Ayetoro, Ibadan, Ogbomosho and Lagos and taken to the laboratory. The fruits were then sealed in moist plastic bags and incubated for 5 days in a moist chamber after which observations on the development of anthracnose infection were anthracnowe.

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The effect of anthracnose on the market prices of mango fruits in four major markets in Southwestern Nigeria. After 24 h, one branch out of the two inoculated with Colletotrichum gloeosporioides spore suspension was treated with Ferbam Ferric dimethyldithiocarbamate at 4.

Show full item record. The protein profiling of eleven isolates of the mango anthracnose abthracnose C.

All branches were then covered with sterile polyethylene bags for 24 h. Effect thesks anthracnose on the yield of mango in different mango-growing areas: Similarly, among plant extracts, leaf water extract of A.

thesis on mango anthracnose

The Identification of Fungi: Several workers including Rawal and Sangchote implicated these three fungal species in earlier reports, to be the fungi responsible for postharvest diseases of mango associated with fruit rotting during ripening. Untreated trees retained least fruit mean of Science, University of Florida, Gainesville, Florida.

thesis on mango anthracnose

Pathogen isolates also differed in exhibiting activity of pectin degrading enzymes PG, PMEwhich corresponds to the lesion size produced by respective isolates on mango fruit being highest in mango isolate I4. There were significant differences in fruit yield among treated and untreated mango trees in the different mango-growing areas Table 2. The fungus was, identified to be Colletotrichum gloeosporioides Fig. A significant reduction in the price of mango was found associated with anthracnose-infected fruits.

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