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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
23/03/1992 |
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Data da última atualização: |
31/05/2023 |
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Autoria: |
MANJUNATH, K. L. |
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Afiliação: |
Indian Institute of Horticultural Research. |
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Título: |
Studies on the distribution, transmission, strains and strain interaction of citrus tristeza virus. |
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Ano de publicação: |
1985 |
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Fonte/Imprenta: |
Journal of Plant Diseases and Protection, v. 92, n. 5, p. 502-508, Oktober 1985. |
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Idioma: |
Inglês |
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Conteúdo: |
Indexing of coorg mandarin (Citrus reticulata) orchards showed that citrus tristeza virus (CTV) is widespread in Coorg district. The prevalence of seedling yellows (SY) strain was found through indexing and confirmed by aphid transmission studies. Toxoptera aurantii was found to be an efficient vector of CTV and SY component. Eventhough a single aphid was capable of transmitting the disease, maximum transmission was obtained with 20 or more aphids. Preacquisition fasting of the aphids increased the efficiency of acquisition. Transmissions were obtained at minimum acquisition and inoculation feeding periods of five-minutes each. The aphids retained infectivity up to 3 h beyond which they became non-viruliferous. None of the six mild isolates tested gave complete protection against all the 12 severe isolates challenge inoculated. |
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Palavras-Chave: |
cross protection; seedling yellows; transmission; Tristeza. |
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Thesagro: |
Vírus. |
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Thesaurus Nal: |
Citrus; Citrus tristeza virus; Toxoptera aurantii. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01507naa a2200217 a 4500
001 1646171
005 2023-05-31
008 1985 bl uuuu u00u1 u #d
100 1 $aMANJUNATH, K. L.
245 $aStudies on the distribution, transmission, strains and strain interaction of citrus tristeza virus.$h[electronic resource]
260 $c1985
520 $aIndexing of coorg mandarin (Citrus reticulata) orchards showed that citrus tristeza virus (CTV) is widespread in Coorg district. The prevalence of seedling yellows (SY) strain was found through indexing and confirmed by aphid transmission studies. Toxoptera aurantii was found to be an efficient vector of CTV and SY component. Eventhough a single aphid was capable of transmitting the disease, maximum transmission was obtained with 20 or more aphids. Preacquisition fasting of the aphids increased the efficiency of acquisition. Transmissions were obtained at minimum acquisition and inoculation feeding periods of five-minutes each. The aphids retained infectivity up to 3 h beyond which they became non-viruliferous. None of the six mild isolates tested gave complete protection against all the 12 severe isolates challenge inoculated.
650 $aCitrus
650 $aCitrus tristeza virus
650 $aToxoptera aurantii
650 $aVírus
653 $across protection
653 $aseedling yellows
653 $atransmission
653 $aTristeza
773 $tJournal of Plant Diseases and Protection$gv. 92, n. 5, p. 502-508, Oktober 1985.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
