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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
30/04/1992 |
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Data da última atualização: |
31/05/2023 |
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Autoria: |
GRAHAM, J. H.; TIMMER, N. H. |
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Afiliação: |
Citrus Research and Education Center, University of Florida, Instituteof Food and Agricultural Sciences, 700 Experiment Station Road, Lake Alfred 33850, USA. |
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Título: |
Peat-based media as a source of Thielaviopsis basicola causing black root rot on citrus seedlings. |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Plant Disease, v.75, n.12, p.1246-1249, 1991. |
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ISSN: |
0191-2917 |
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Idioma: |
Inglês |
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Conteúdo: |
Thielaviopsis basicola was identified as the cause of back root rot on citrus seedlings growing in soilless peat-based media in Florida greenhouse nurseries. Three of 14 samples of commercial bases of media and two of 12 samples of Canadian sphagnum peat yielded low densities of T. basicola (1-2 cfu/cm3 of medium) when wetted and plated on selective carrot-etridiazolnystatin medium. T.basicola survived in peat debris and was detected from air samples in a greenhouse that had contained infected plants 2 mo previously. Under winter conditions, where media temperatures ranged from 18 to 27 C, isolates of T. basicola from peat and a peat-based root rot on Ridge Pineapple sweet orange, sour orange, and Volkamer lemon; and mild root rot on rough lemon, trifoliate orange, Carrizo citrange, and Swingle citrumelo. Propagule density in the rhizosphere of all cultivars increased from the inoculated levels in the peat-based medium. Peat-based media may act as a source of T. basicola, a pathogen with a wide host range. |
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Palavras-Chave: |
cultivares. |
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Thesagro: |
Doença. |
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Thesaurus Nal: |
California. |
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Categoria do assunto: |
-- |
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Marc: |
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008 1991 bl uuuu u00u1 u #d
022 $a0191-2917
100 1 $aGRAHAM, J. H.
245 $aPeat-based media as a source of Thielaviopsis basicola causing black root rot on citrus seedlings.$h[electronic resource]
260 $c1991
520 $aThielaviopsis basicola was identified as the cause of back root rot on citrus seedlings growing in soilless peat-based media in Florida greenhouse nurseries. Three of 14 samples of commercial bases of media and two of 12 samples of Canadian sphagnum peat yielded low densities of T. basicola (1-2 cfu/cm3 of medium) when wetted and plated on selective carrot-etridiazolnystatin medium. T.basicola survived in peat debris and was detected from air samples in a greenhouse that had contained infected plants 2 mo previously. Under winter conditions, where media temperatures ranged from 18 to 27 C, isolates of T. basicola from peat and a peat-based root rot on Ridge Pineapple sweet orange, sour orange, and Volkamer lemon; and mild root rot on rough lemon, trifoliate orange, Carrizo citrange, and Swingle citrumelo. Propagule density in the rhizosphere of all cultivars increased from the inoculated levels in the peat-based medium. Peat-based media may act as a source of T. basicola, a pathogen with a wide host range.
650 $aCalifornia
650 $aDoença
653 $acultivares
700 1 $aTIMMER, N. H.
773 $tPlant Disease$gv.75, n.12, p.1246-1249, 1991.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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