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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
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Data corrente: |
12/08/1992 |
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Data da última atualização: |
12/08/1992 |
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Autoria: |
AFEK, U. |
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Afiliação: |
University of Jerusalem. |
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Título: |
A rapid method for evaluating citrus seedlings for resistance to foot rot caused by phytophthora citrophthora. |
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Ano de publicação: |
1990 |
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Fonte/Imprenta: |
Plant Disease, v.74, n.1, p.66-68, 1990. |
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Idioma: |
Inglês |
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Conteúdo: |
A method was developed to evaluate the resistance of citrus rootstocks to foot rot disease caused by the fungus Phytophthora citrophthora. This method involved inoculating three-monthold branches of seedling rootstocks with an isolate of P. citrophthora and measuring the length of lesions that developed four days later. The degree of resistance was determined by comparing the lenghs of lesion on seedlings of species of unknown resistance to lengths on seedlings of rootstock species with known resistance. The lengths on seedlings of resistant species were2.8mm for citrus macrophylla and 3.2 mm for Poncirus trifoliata; lengths on moderately-resistant species were 5.0 mm for C. aurantium and 5.2 m for P. trifoliata x C. simensis; lenghts on susceptible speciesre 11.0 mm for both C. jambhiri and C. sinensis. |
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Palavras-Chave: |
Avaliacao; Disease; Fungos; Fungus; Plant; Valuation. |
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Thesagro: |
Doença; Phytophthora; Planta. |
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Categoria do assunto: |
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Marc: |
LEADER 01404naa a2200229 a 4500
001 1071817
005 1992-08-12
008 1990 bl --- 0-- u #d
100 1 $aAFEK, U.
245 $aA rapid method for evaluating citrus seedlings for resistance to foot rot caused by phytophthora citrophthora.
260 $c1990
520 $aA method was developed to evaluate the resistance of citrus rootstocks to foot rot disease caused by the fungus Phytophthora citrophthora. This method involved inoculating three-monthold branches of seedling rootstocks with an isolate of P. citrophthora and measuring the length of lesions that developed four days later. The degree of resistance was determined by comparing the lenghs of lesion on seedlings of species of unknown resistance to lengths on seedlings of rootstock species with known resistance. The lengths on seedlings of resistant species were2.8mm for citrus macrophylla and 3.2 mm for Poncirus trifoliata; lengths on moderately-resistant species were 5.0 mm for C. aurantium and 5.2 m for P. trifoliata x C. simensis; lenghts on susceptible speciesre 11.0 mm for both C. jambhiri and C. sinensis.
650 $aDoença
650 $aPhytophthora
650 $aPlanta
653 $aAvaliacao
653 $aDisease
653 $aFungos
653 $aFungus
653 $aPlant
653 $aValuation
773 $tPlant Disease$gv.74, n.1, p.66-68, 1990.
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Registro original: |
Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
