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Influence of some plant growth regulators on the growth and organogenesis ofCymbidium aloifolium (L.) Sw. seed-derived rhizomesin vitro

  • Developmental Biology/Morphogenesis
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Summary

An efficient procedure is outlined forin vitro regeneration of an epiphytic orchid,Cymbidium aloifolium (L.) Sw. using rhizomes developed from seeds. Murashige and Skoog's (1962) medium (MS) containing indole-3-acetic acid (IAA), indole-3-butyric acid (IBA), or 1-naphthaleneacetic acid (NAA) stimulated growth and proliferation of rhizomes with NAA being most effective at 5.0 mg.l−1 (27.0 μM). Shoot bud differentiation was induced in the apical portions of the rhizomes on MS medium containing kinetin (Kn) or N6-benzyladenine (BA). The highest frequency of shoot regeneration (91.5%) and the maximum number of shoot buds formed (3.5 shoots/rhizome) were recorded with BA at 1.0 mg.l−1 (4.4 μM). NAA (0.1 mg.l−1, 0.54 μM), whenever added to the medium in conjunction with BA (1.0 mg.l−1, 4.4 μM), slightly enhanced the frequency of shoot bud regeneration (92.6%) and the number of shoot buds formed (5.2 shoots/rhizome). Moreover, an NAA-BA combination induced rooting in regenerated shoots thereby producing complete plantlets in one step. Shoots developed on cytokinin-supplemented medium were rooted on MS containing NAA at 1.0 mg.l−1 (5.4 μM). Regenerated plantlets were acclimated and eventually established in a garden.

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Nayak, N.R., Chand, P.K., Rath, S.P. et al. Influence of some plant growth regulators on the growth and organogenesis ofCymbidium aloifolium (L.) Sw. seed-derived rhizomesin vitro . In Vitro Cell.Dev.Biol.-Plant 34, 185–188 (1998). https://doi.org/10.1007/BF02822706

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  • DOI: https://doi.org/10.1007/BF02822706

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