Exobasidium vexans Massee, Bulletin of Miscellaneous Informations of the Royal Botanical Gardens Kew () [MB#]. PDF | On Jan 1, , nghe and others published Morphological and Molecular Differences of Exobasidium vexans Massee. Blister blight (causal agent, Exobasidium vexans) is an economically devastating disease of tea (Camellia sinensis). To determine what.
Basidiospores produced by E. This is used when first reloading the page. Cookies mentioned in the last point are Google analytics cookies that are IP anonymized which means that we cannot trace single users.
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blister blight of tea (Exobasidium vexans)
Diseased leaves also affect the quality of finished tea if included in processing as several biochemical characteristics are changed resulting in reduced quality Baby et al.
Lily Eurwilaichitr and Dr. Google cookies and technologies Google Analytics: On the upper side of the leaf, the spots slowly become sunken into a shallow depression; at the same time on the under-side they become correspondingly convex, forming the typical blister lesion.
See below for more information. Transactions of the British Mycological Society.
However, others suggest that some infection can actually lead to an increase in quality Rajalakshmi and Ramarethinam, A wet leaf surface environment of 11 hours or more per day is critical in pathogen propagation. Catalogue of Life CoL.
There are many methods of control throughout Asia, with varying levels of success. Between and the annual loss amounted to 18 kilotonnes of tea, before control measures were fully implemented on an extensive scale Venkata Ram, Detection of Tea Blister Blight is done via a visual inspection of the crop plants for the characteristic blisters. No other cookies than the ones mentioned above are used on our websites. Because the fungus infects the tender foliage that forms the harvest, exobasisium crop losses can occur.
The basidiospores of exobasidoum pathogen are very sensitive, direct sunlight in excess of 4 hours will readily destroy them, therefore other agricultural methods such as planting rows greater distances apart to allow sunlight to penetrate to young target leaves can be helpful in controlling disease spread.
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Affected tea leaves can often be distorted, folded or irregularly rolled, owing to the development of the blister lesions on the mid-rib and the exobasiddium. Continuing to use www.
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Exobasidium vexans Massee, Kew Bulletin These lesions give the lower surface of the leaf the exobaidium blister like appearance. The circular spots enlarge until they reach a diameter ranging from 3 to Most frequently fungicides such as carbendazim, hexaconazole, propiconazole, and tridemorph are used. Bernard Jabas 1 and Dr.
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Application of diluted polyoxin, an antibiotic, has also had some success at control and inhibition of the disease. Views Read Edit View history. Any condition s All condition s. Fungal plant pathogens and diseases Tea diseases Ustilaginomycotina Fungi described in Ustilaginomycotina stubs Plant disease stubs.
It thrives in humid high elevations in Asia. Spores are wind dispersed and readily germinate, usually within 24 hours. The mature two-celled basidiospores are very easily dislodged from the sterigmata and are usually to be found on the surface of the blister.
Using Google Analytics, we can see what content is popular on our websites. It is replaced each time there is a query done. For further information, we recommend you visit the following resources: Exobasidium vexans is an obligate pathogen of tea, which makes the study of it difficult. This plant disease article is a stub.