Production, florescence and fruitfication of Pokan mandarin tree submitted to gibberellic acid application/Producao, florescimento e frutificacao de tangerineira 'Ponca' submetida a aplicacao de acido giberelico

The florescence and the production of tangerines are influenced by the last production. So, the inhibition of an excessive florescence can avoid a great production and the exhaustion of the plant reserves, contributing to a more uniform production every year. The objective of this work was to evalua...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Ciência rural 2010-03, Vol.40 (3), p.507
Hauptverfasser: Maia, Emanuel, de Siqueira, Dalmo Lopes, Cecon, Paulo Roberto
Format: Artikel
Sprache:spa
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The florescence and the production of tangerines are influenced by the last production. So, the inhibition of an excessive florescence can avoid a great production and the exhaustion of the plant reserves, contributing to a more uniform production every year. The objective of this work was to evaluate the effect of the reduction of the florescence in Ponkan mandarin trees upon the production of fruits in two consecutive productions. The results demonstrated that the gibberellic acid application reduced the flower production and increased the percentage of fruit production in relation to the year with an excessive flowering. The application of the gibberellic acid around 90-150 days before the full flowering period can contribute to the reduction of the effect of the production alternance. Key words: Citrus reticulata, production alternance, fruit set, gibberellins, growth regulator. O florescimento e a producao de tangerinas sao influenciados pela safra anterior. Assim, a inibicao do florescimento excessivo pode evitar uma frutificacao elevada e a exaustao das reservas da planta, contribuindo para uma producao mais uniforme ao longo dos anos. O objetivo deste trabalho foi avaliar o efeito da aplicacao de giberelina na reducao do florescimento em tangerinas 'Ponca' e na producao de frutos em duas safras consecutivas. Os resultados demonstram que a aplicacao de acido giberelico reduziu a emissao de flores e aumentou a porcentagem de pegamento de frutos em relacao ao ano de florescimento excessivo. A aplicacao de giberelinas cerca de 90-150 dias antes do pleno florescimento pode contribuir para reducao do efeito da alternancia de producao. Palavras-chave: Citrus reticulata, alternancia de producao, pegamento de frutos, giberelinas, reguladores de crescimento.
ISSN:0103-8478