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Propagation of Ornamental Plants
3(1): 27-33, 2003
IN VITRO PROPAGATION OF JACARANDA (JACARANDA MIMOSAEFOLIA D. DON.)
Emilio Maruyama
Transformation Laboratory, Department of Molecular & Cell Biology, Forestry and Forest Products Research Institute, Ibaraki 305-8687, Japan, fax: +(81) 298 73 1542, e-mail: tsumaruy@ffpri.affrc.go.jp
Abstract
Continual large multiplication rates were obtained by subculturing shoot-tips of Jacaranda on B5 medium supplemented with a high concentration level of kinetin (100 µM) and solidified with 0.2 % (w/v) Gelrite. For elongation of proliferated shoots, reduction of the cytokinin level to 1 µM and addition of 0.5 % (w/v) activated charcoal to the medium was optimal. Maximal rooting frequencies were obtained on half-strength B5 medium supplemented with indole-3-butyric acid (IBA) alone, or in combination with naphthaleneacetic acid (NAA). Regenerated plantlets were transferred to vermiculite substratum and acclimatized successfully in a growth cabinet.
Key words: Bignoniaceae, cytokinin treatment, in vitro propagation, Jacaranda mimosaefolia, tropical trees.
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