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Multiplicação in vitro de amoreira-preta cultivar Brazos In vitro multiplication of blackberry cv. Brazos

By Fabiola Villa, Chrystiane Borges Fráguas, Leonardo Ferreira Dutra, Leila Aparecida Salles Pio and Moacir Pasqual

Abstract

A micropropagação da amoreira-preta pode gerar plantas livres de vírus e em curto espaço de tempo. Com o objetivo de aprimorar técnicas de micropropagação de amoreira-preta cultivar Brazos (Rubus idaeus L.), segmentos nodais, oriundos de plântulas preestabelecidas in vitro foram excisados e inoculados em meio WPM (0, 50, 100, 150 e 200%), suplementado com diferentes concentrações de BAP (0; 0,5; 1,0; 2,0 e 4,0 mg L-1). Após a inoculação, os explantes foram transferidos para sala de crescimento a 27±1ºC, irradiância de 35 mmol m² s¹ e fotoperíodo de 16 horas, onde permaneceram por 60 dias. O delineamento experimental utilizado foi inteiramente casualizado, utilizando-se de quatro repetições com quatro explantes cada. Maior número de brotos foi proporcionado com 1,0 mg L-1 de BAP associado a 100% de meio WPM e maior comprimento médio dos brotos após 60 dias foi verificado em 1,0 mg L-1 de BAP associado a 200% de meio WPM. Maior peso de matéria seca da parte aérea foi obtido em meio WPM 200% acrescido de 0,5 mg L-1 de BAP.<br>With the objective of multiplying blackberry cv. Brazos, nodal segments, coming from in vitro plants previously selected, were excised and inoculated in WPM culture medium (0, 50, 100, 150 and 200%), supplemented with different concentrations of BAP (0; 0,5; 1,0; 2,0 and 4,0 mg L-1). After inoculation, the explants were transferred to culture room, at 27±1ºC temperature, 35 mmol m² s¹ ofirradiance and photoperiod of 16 hours, for 60 days. The experimental was a design randomized complete block, with four replications and four explants each. Greater number of sprouts was provided with 1,0 mg L-1 of BAP associated with 100% WPM culture medium and larger sprouts length average after 60 days were verified in 1,0 mg L-1 of BAP associated with 200% WPM culture medium. Higher dry matter weight of the aerial part was obtained in 200% WPM culture medium added with 0,5 mg L-1 of BAP

Topics: Rubus idaeus L., micropropagação, benzilaminopurina, meio de cultura WPM, Rubus idaeus L., micropropagation, benzilaminopurin, WPM culture medium, Agriculture (General), S1-972, Agriculture, S, DOAJ:Agriculture (General), DOAJ:Agriculture and Food Sciences
Publisher: Universidade Federal de Lavras
Year: 2006
DOI identifier: 10.1590/S1413-70542006000200011
OAI identifier: oai:doaj.org/article:0afafa932cd8443881b7f701adad01b0
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