In vitro selection of yellow passion fruit genotypes for resistance to Fusarium vascular wilt
Autor: | Telma Miranda dos Santos, Claudio Horst Bruckner, Onkar D. Dhingra, Sergio Paulo Severo de Souza Diniz, Patrícia Silva Flores, Wagner Campos Otoni |
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Přispěvatelé: | PATRICIA SILVA FLORES, CPAF-AC, WAGNER CAMPOS OTONI, UFV, ONKAR DEV DHINGRA, UFV, SÉRGIO PAULO SEVERO DE SOUZA DINIZ, UEM, TELMA MIRANDA DOS SANTOS, CLAUDIO HORST BRUCKNER. |
Jazyk: | angličtina |
Rok vydání: | 2011 |
Předmět: |
Fusarium
Seleção genótipa Características Agronômicas Genotype Passiflora edulis flavicarpa Enfermedades y desórdenes de las plantas Variedade resistente Horticulture Fusarium oxysporum f sp passiflorae Maracuyá amarillo Maracujá Peroba Passiflora Tissue culture chemistry.chemical_compound Culture filtrate Doença de planta Fusarium oxysporum Botany Plant diseases and disorders Maracujá amarelo Fusariose Cultivar Genótipo Fungo biology Inoculation Fungi food and beverages Plant physiology biology.organism_classification Passiflora edulis chemistry Fusariosis Fusarium oxysporum f. sp. passiflorae In vitro culture Yellow passion fruit Cultivo in vitro Agronomic traits Cultura in vitro Passiflora edulis f flavicarpa Fusaric acid |
Zdroj: | LOCUS Repositório Institucional da UFV Universidade Federal de Viçosa (UFV) instacron:UFV Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice) Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
Popis: | Fusarium vascular wilt (caused by Fusarium oxysporum f. sp. passiflorae) is a limiting factor in the cultivation of yellow passion fruit (Passiflora edulis). Since there is no effective and economically viable control available, development of resistant or at least tolerant cultivars are in demand. A number of procedures have been used for the initial selection of plant genotypes resistant to various fungal pathogens by means of a fungal culture filtrate or purified toxin. In this study, seeds and in vitro-grown plantlets of passion fruit were screened with different concentrations of either Fusarium oxysporum f. sp. passiflorae (FOP) culture filtrate (0, 20, 30, 40 or 50%, v/v) or fusaric acid (0.10, 0.20, 0.30 or 0.40 mM) supplemented in Murashige and Skoog (MS) basal media. Subsequently, selected plants were inoculated with a conidial suspension of FOP to assess correlation between in vivo and in vitro responses. In vitro sensitivity to the selective agents and the resistance response to the pathogen were also compared. Root growth was markedly influenced by FA, culture filtrate, and conidial suspension culture treatments. Observations indicated that roots were primary targets for attack by F. oxysporum. Successful in vitro selection of resistant genotypes by both FA and culture filtrate treatments suggested that this strategy was viable for accelerating breeding of passion fruit for resistance to the Fusarium vascular wilt. |
Databáze: | OpenAIRE |
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