| Texto completo | |
| Autor(es): |
Fernandes De Campos, Kelly Aparecida
[1]
;
De Azevedo, Fernando Alves
[1]
;
Bastianel, Marines
[1]
;
Cristofani-Yaly, Mariangela
[1]
Número total de Autores: 4
|
| Afiliação do(s) autor(es): | [1] Inst Agron IAC, Ctr APTA Citros Sylvio Moreira, Cordeiropolis, SP - Brazil
Número total de Afiliações: 1
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Revista Brasileira de Fruticultura; v. 39, n. 5, p. 1-10, 2017. |
| Citações Web of Science: | 0 |
| Resumo | |
Alternaria brown spot (ABS) disease is caused by the fungus of Alternaria alternata f. sp. citri, which causes injury in leaves, branches and fruits of citrus. The action of the pathogen is directly related to the presence of toxin receptors in susceptible genotypes. The objective of this study was to characterize a population of citrus hybrids obtained from controlled crosses between Pera de Abril sweet orange and the hybrid of Murcott tangor x Pera sweet orange (TM x LP 163) for response to ABS through the in vitro inoculation of fungal spores in young detached leaves. The fungus was isolated from the lesions of Murcott tangor fruits that exhibited ABS symptoms. Two hundred thirty-five hybrids were evaluated, and 70 (30%) showed different levels of disease symptoms on detached leaves after 72 hours of inoculation with the fungus, and 165 (70%) were asymptomatic. The frequency of segregation observed (165R:70S) and high level of heritability (h(g)(2) = 0.91) suggest that few genes may be involved in controlling the inheritance of ABS resistance in citrus. (AU) | |
| Processo FAPESP: | 11/18605-0 - Obtenção e avaliação de novas variedades copas e porta-enxertos para citricultura de mesa |
| Beneficiário: | Mariângela Cristofani-Yaly |
| Linha de fomento: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 11/21559-0 - Caracterização horticultural e seleção de acessos de tangerinas e híbridos para o estado de São Paulo |
| Beneficiário: | Marinês Bastianel |
| Linha de fomento: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 14/50880-0 - INCT 2014: de genômica comparativa e funcional e melhoramento assistido de citros |
| Beneficiário: | Marcos Antonio Machado |
| Linha de fomento: | Auxílio à Pesquisa - Temático |