Las enfermedades de virus en el cafeto

Las enfermedades de virus en el cafeto

Virus diseases in coffee are hardly know due to the scarcity of sound experimental studies. They are of economic importance and their knowledge is urgently needed in view of the increased interchange of living propagation materials. The most common is the "ring spot" virus, described from Sao Paulo, consisting of concentric circles with alternating dark and clear bands. The spots are found upon leaves and fruits. Experimental trials showed that the seeds of infected trees do not transmit the disease. It was impossible also to infect healthy plants with juice inoculations, but it could be transmitted by graft. Recent work has shown that the "spotted wilt" virus of tobacco could be infected in healthy coffee plants by rubbing the leaves with the juice of virotic tobacco. The spots are similar to the "ring spot" referred above. A second virus, also discovered in Sao Paulo, is called "grease-spot". It is a clear green circle, 2-3 mm. in diameter, the tissues having the appearance of being impregnated with oil. A third type, "blister spot", was described from Costa Rica from fruits and leaves. It is also a circular, decolorized spot, often bullate

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Bibliographic Details
Main Authors: 118854 Silberschmidt, K.M., 49124 Bitancourt, A.
Format: biblioteca
Language:spa
Published: 1965
Subjects:ENFERMEDADES DE LAS PLANTAS, VIROSIS, SINTOMAS, TRANSMISION DE ENFERMEDADES,
Online Access:http://orton.catie.ac.cr/repdoc/A8681e/A8681e.pdf
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spelling KOHA-OAI-BVE:752672021-09-09T20:39:45ZLas enfermedades de virus en el cafeto 118854 Silberschmidt, K.M. 49124 Bitancourt, A. 1965spapdfVirus diseases in coffee are hardly know due to the scarcity of sound experimental studies. They are of economic importance and their knowledge is urgently needed in view of the increased interchange of living propagation materials. The most common is the "ring spot" virus, described from Sao Paulo, consisting of concentric circles with alternating dark and clear bands. The spots are found upon leaves and fruits. Experimental trials showed that the seeds of infected trees do not transmit the disease. It was impossible also to infect healthy plants with juice inoculations, but it could be transmitted by graft. Recent work has shown that the "spotted wilt" virus of tobacco could be infected in healthy coffee plants by rubbing the leaves with the juice of virotic tobacco. The spots are similar to the "ring spot" referred above. A second virus, also discovered in Sao Paulo, is called "grease-spot". It is a clear green circle, 2-3 mm. in diameter, the tissues having the appearance of being impregnated with oil. A third type, "blister spot", was described from Costa Rica from fruits and leaves. It is also a circular, decolorized spot, often bullateit was transmitted experimentally by graft to healthy plants. Other diseases that have been attributed to virus without firm experimental proof, are the so called "crespera", in which the leaves take a characteristic crinkled aspectthe "bottling disease" of East Africa, and the "sudden death" of coffee, from AngolaIncluye 8 referencias bibliográficas.Virus diseases in coffee are hardly know due to the scarcity of sound experimental studies. They are of economic importance and their knowledge is urgently needed in view of the increased interchange of living propagation materials. The most common is the "ring spot" virus, described from Sao Paulo, consisting of concentric circles with alternating dark and clear bands. The spots are found upon leaves and fruits. Experimental trials showed that the seeds of infected trees do not transmit the disease. It was impossible also to infect healthy plants with juice inoculations, but it could be transmitted by graft. Recent work has shown that the "spotted wilt" virus of tobacco could be infected in healthy coffee plants by rubbing the leaves with the juice of virotic tobacco. The spots are similar to the "ring spot" referred above. A second virus, also discovered in Sao Paulo, is called "grease-spot". It is a clear green circle, 2-3 mm. in diameter, the tissues having the appearance of being impregnated with oil. A third type, "blister spot", was described from Costa Rica from fruits and leaves. It is also a circular, decolorized spot, often bullateit was transmitted experimentally by graft to healthy plants. Other diseases that have been attributed to virus without firm experimental proof, are the so called "crespera", in which the leaves take a characteristic crinkled aspectthe "bottling disease" of East Africa, and the "sudden death" of coffee, from AngolaENFERMEDADES DE LAS PLANTASVIROSISSINTOMASTRANSMISION DE ENFERMEDADESCafé (Costa Rica)http://orton.catie.ac.cr/repdoc/A8681e/A8681e.pdf
institution IICA
collection Koha
country Costa Rica
countrycode CR
component Bibliográfico
access En linea
En linea
databasecode cat-sibiica
tag biblioteca
region America Central
libraryname Sistema de Bibliotecas IICA/CATIE
language spa
topic ENFERMEDADES DE LAS PLANTAS
VIROSIS
SINTOMAS
TRANSMISION DE ENFERMEDADES
ENFERMEDADES DE LAS PLANTAS
VIROSIS
SINTOMAS
TRANSMISION DE ENFERMEDADES
spellingShingle ENFERMEDADES DE LAS PLANTAS
VIROSIS
SINTOMAS
TRANSMISION DE ENFERMEDADES
ENFERMEDADES DE LAS PLANTAS
VIROSIS
SINTOMAS
TRANSMISION DE ENFERMEDADES
118854 Silberschmidt, K.M.
49124 Bitancourt, A.
Las enfermedades de virus en el cafeto
description Virus diseases in coffee are hardly know due to the scarcity of sound experimental studies. They are of economic importance and their knowledge is urgently needed in view of the increased interchange of living propagation materials. The most common is the "ring spot" virus, described from Sao Paulo, consisting of concentric circles with alternating dark and clear bands. The spots are found upon leaves and fruits. Experimental trials showed that the seeds of infected trees do not transmit the disease. It was impossible also to infect healthy plants with juice inoculations, but it could be transmitted by graft. Recent work has shown that the "spotted wilt" virus of tobacco could be infected in healthy coffee plants by rubbing the leaves with the juice of virotic tobacco. The spots are similar to the "ring spot" referred above. A second virus, also discovered in Sao Paulo, is called "grease-spot". It is a clear green circle, 2-3 mm. in diameter, the tissues having the appearance of being impregnated with oil. A third type, "blister spot", was described from Costa Rica from fruits and leaves. It is also a circular, decolorized spot, often bullate
format
topic_facet ENFERMEDADES DE LAS PLANTAS
VIROSIS
SINTOMAS
TRANSMISION DE ENFERMEDADES
author 118854 Silberschmidt, K.M.
49124 Bitancourt, A.
author_facet 118854 Silberschmidt, K.M.
49124 Bitancourt, A.
author_sort 118854 Silberschmidt, K.M.
title Las enfermedades de virus en el cafeto
title_short Las enfermedades de virus en el cafeto
title_full Las enfermedades de virus en el cafeto
title_fullStr Las enfermedades de virus en el cafeto
title_full_unstemmed Las enfermedades de virus en el cafeto
title_sort las enfermedades de virus en el cafeto
publishDate 1965
url http://orton.catie.ac.cr/repdoc/A8681e/A8681e.pdf
work_keys_str_mv AT 118854silberschmidtkm lasenfermedadesdevirusenelcafeto
AT 49124bitancourta lasenfermedadesdevirusenelcafeto
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