科研之友
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摘要
The world market for flowers is showing great economic prominence in recent years. Despite the establishment of micropropagation techniques, improvements are still needed in the protocol. In this sense, the aim of the present study was to evaluate the in vitro multiplication of species of ornamental pineapple Ananas comosus var. bracteatus and A. comosus var. erectifolius at different evaluation periods and concentrations of BAP. Were used as explants axillary buds of ornamental pineapple. We used a completely randomized design, consisting of 16 treatments with 5 replicates and 2x4x2 factorial design, with one explant per tube. For leaf number, variety erectifolius was more efficient than bracteatus; evaluation performed 60 days, the number of leaves was two times higher than at 30 days at the concentration of 1 mg L-1 BAP. The variety erectifolius presented leaves longer in the concentration of 1 mg L-1 BAP. The length of the leaves decreased with increasing concentration of BAP. The number of roots produced was not influenced by the variety, or the evaluation period. The variety erectifolius showed greater root length main bracteatus that in the absence of BAP at 60 days. The concentration of 3 mg L-1 BAP was more effective in the formation of shoots. The variety bracteatus at 60 days showed the highest shoot formation in ornamental pineapple.
- 出版日期2014-6
