New contributions to micropropagation of Swietenia macrophylla X Swietenia mahogani (hybrid mahogany) and Cedrela odorata (cedar)
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Abstract
has caused a quick decrease of the number of elite trees;
among the main species are Cedrela and Swietenia. This paper
shows the results of micropropagating these two species from
seeds. The use of mercury bichloride (HgCl2) at 0.25 %, during
five minutes reached the best disinfection levels of Cedrela
seeds; however, in Swietenia seeds, the highest values were
achieved with calcium hypochlorite (CaClO)2 at 2.0 and 3.0 %.
The time of desinfection showed significant effects on the
contamination and germination percentages of seeds. The
supplement of 6-Bencilamine purine (6-BAP) at 0.50 mg.L-1
achieved the best explant quality and multiplication rates in
both species. The use of Indolbutiric acid (IBA) at 0.50 mg.L-1 to
rooting induction achieved very favorable results.
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