Microenxertia em cultivares de manga
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Data
2006-12-01
Autores
Zaccaro, Ronaldo Posella [UNESP]
Donadio, Luiz Carlos [UNESP]
Lemos, Eliana Gertrudes Macedo [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Fruticultura
Resumo
Com a finalidade de se testar a viabilidade do método de microenxertia para produzir mudas de mangueira livres do fungo Fusarium subglutinans, agente causal da malformação, foram realizados experimentos utilizando-se do ápice meristemático da cultivar Tommy Atkins. Retirou-se o ápice meristemático do porta-enxerto e colocou-se o ápice meristemático da cultivar-copa, denominando-se essa metodologia de microenxertia por substituição de ápice meristemático, na qual foram utilizadas as cultivares Coquinho, Espada, Ouro e Ubá como porta-enxertos. O material de propagação utilizado foi retirado de uma planta-matriz da cultivar Tommy Atkins sem sintomas de malformação. Primeiramente, a parte apical dos ramos foi cortada com aproximadamente 3 cm de comprimento. Os meristemas foram colocados em uma solução antioxidante composta de ácido ascórbico, ácido cítrico e L-cisteína, para evitar a oxidação dos compostos fenólicos existentes na manga. Os meristemas apicais foram cortados com comprimento de 2 mm. em seguida, efetuou-se o corte do meristema apical e de folhas do porta-enxerto, colocando-se o meristema apical sobre o corte do porta-enxerto, recobrindo-se com Parafilm®. Demonstrou-se com a técnica de microenxertia a possibilidade de formação de plantas-matrizes, para implantação de jardim clonal em condições de viveiro protegido.
This research was carried out with the purpose to produce mangoes trees free of fungus Fusarium subglutinans, causal agent of mango malformation by using the apex meristem to substitute it for the meristem of the commercial cultivar Tommy Atkins. This micrografting methodology was denominated meristem substitution through which the cultivars Coquinho, Espada, Ouro and Ubá were used as rootstocks. The micrografts were collected from 'Tommy Atkins' mother plant without malformation symptoms. Firstly, branch apexes were cut off having length of 3 cm. Each apex meristem was placed in an antioxidant solution composed of ascorbic acid, citric acid and cistein, to avoid the oxidation of the fenolic compounds. The apex meristem was cut with 2 mm length. The apex meristem and leaves of the rootstock were also cut off then the apex meristem of Tommy Atkins was placed on the extremity of the rootstock, being covered with ParafilmR. It was demonstrated that micrografting technique may develop matrix plants to implant a cloned garden in the protected greenhouse conditions.
This research was carried out with the purpose to produce mangoes trees free of fungus Fusarium subglutinans, causal agent of mango malformation by using the apex meristem to substitute it for the meristem of the commercial cultivar Tommy Atkins. This micrografting methodology was denominated meristem substitution through which the cultivars Coquinho, Espada, Ouro and Ubá were used as rootstocks. The micrografts were collected from 'Tommy Atkins' mother plant without malformation symptoms. Firstly, branch apexes were cut off having length of 3 cm. Each apex meristem was placed in an antioxidant solution composed of ascorbic acid, citric acid and cistein, to avoid the oxidation of the fenolic compounds. The apex meristem was cut with 2 mm length. The apex meristem and leaves of the rootstock were also cut off then the apex meristem of Tommy Atkins was placed on the extremity of the rootstock, being covered with ParafilmR. It was demonstrated that micrografting technique may develop matrix plants to implant a cloned garden in the protected greenhouse conditions.
Descrição
Palavras-chave
Fusarium subglutinans, malformação, Mangifera indica L., propagação da manga, Fusarium subglutinans, Mangifera indica L., mango malformation, mango propagation
Como citar
Revista Brasileira de Fruticultura. Sociedade Brasileira de Fruticultura, v. 28, n. 3, p. 533-535, 2006.