Abstract
Three Alstroemeria genotypes—A30, ER292, and 16-1-2—developed at the Univ. of Connecticut were grown in vitro on two media: Murashige and Skoog (MS) basal medium and Alstroemeria medium (ALA). Each medium had four levels of 6-benzylaminopurine (BA) added: 0, 9, 18, and 36 μm. Alstroemeria rhizomes initially containing one bud were cultured on the 24 treatments for 12 weeks with transfers onto fresh medium at 4 and 8 weeks. At each transfer and at the end of the experiment plants were scored for the number of shoots produced, number of new buds, fresh weight, and presence of roots. No difference was observed between the MS and ALA media. No interaction was found between medium and hormone concentration. BA inhibited the formation and growth of roots that were observed only in the control without BA. The control was different from 9, 18, and 36 μm BA for the number of buds produced, number of shoots and fresh weight while no differences were observed between the various concentrations of BA. ER292 gave the highest yields in number of buds, shoots and fresh weight of all the genotypes.
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