Hort. Sci. (Prague), 2007, 34(2):77-83 | DOI: 10.17221/1853-HORTSCI

Influence of growth regulators and nitrogenous compounds on in vitro bulblet formation and growth in oriental lily

S. Kumar, V. Awasthi, J. K. Kanwar
Department of Biotechnology, University of Horticulture & Forestry, Solan, India

The influence of growth regulators and nitrogenous compounds on in vitro bulblet formation and growth was studied in two hybrids of Lilium. Bulbscales isolated from pre-cooled bulbs of hybrids Rosato and Marco Polo were used. The basal portion with plate (5 × 6 mm) of inner bulbscales was cultured on Murashige and Skoog (MS) medium containing 0.5 or 1 mg/dm3 naphthaleneacetic acid (NAA) and/or benzyladenine (BA). The presence of NAA (0.5 mg per dm3) showed higher explant regeneration, producing about three bulblets per explant as compared to control. About four bulblets per explant were produced at both concentrations of BA. The bulblets with significantly higher fresh weight were obtained on medium containing NAA. Approximately a three-fold increase of bulblet fresh weight was observed with all the concentrations of TDZ in both cultivars. The bulblets cultured with nitrogenous compounds after attaining the size of 14-16 cm flowered during the second year of the growing period without any phenotypic variations.

Keywords: lily hybrids; Rosato; Marco Polo; NAA; BA; TDZ; thiourea; phenylthiourea; urea; bulblet regeneration and production

Published: June 30, 2007  Show citation

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Kumar S, Awasthi V, Kanwar JK. Influence of growth regulators and nitrogenous compounds on in vitro bulblet formation and growth in oriental lily. Hort. Sci. (Prague). 2007;34(2):77-83. doi: 10.17221/1853-HORTSCI.
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