Concentrations of plant regulators in the blanching in vitro of pineapple of the field

Márcia Maria Dias, Moacir Pasqual, Aparecida Gomes Araújo, Verônica Andrade dos Santos, Antônio Clarete de Oliveira, Vantuil Antônio Rodrigues

Abstract


The ornamental pineaple Ananas comosus (L.) Merr. var. ananassoides (Baker) Coppens & F. Leal, also denominated of pineapple of the field or it crowns green it is a plant still little explored economically in spite of the ornamental potential as " cut flower ". Studies about the propagation of the pineapple of the field are scarce, in this sense, the micropropagation of this can represent a progress for the commercial production of the species. The objective of the work was to evaluate the different combinations of 6-BAP and GA3 in the multiplication and development of the explants of Ananas comosus (L.) Merr. var. ananassoides (Baker) Coppens & F. Leal. The randomized experimental desing was used, with a factorial scheme 4x4 consisting of four concentrations of 6-BAP (0; 0,25; 0,5 and 1,0 mg.L-1) and four concentrations of GA3 (0; 0,5; 1,0 and 2,0 mg.L-1) combined. According to the results, the interaction 1,0 mg.L-1 of 6-BAP and 0,5 mg.L-1 of GA3 provided larger sprouts number. The addition of 6-BAP propitiated a reduction of the bud length and of the roots number of explants. The addition of GA3 caused a larger length of the aerial part and it didn't influence in the rooting of the explants.


Keywords


Micropropagation; Ornamental pineapple; Bromeliaceae; Cytokinin; Gibberellin.



DOI: http://dx.doi.org/10.5433/1679-0359.2011v32n2p513

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional