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Ornamental and Medicinal Plants, 2017, 1(1): 1-14
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Article

Effect of growth hormones on seed germination and plant growth: with chemical components of Hedychium spicatum Ham.ex.Smith.

Gopichand1, R.L. Meena1, A.K. Maurya2, V. K. Agnihotri1, R.D. Singh1
1Department of High Altitude Biology, CSIR - Institute of Himalayan Bioresource Technology, Palampur, India
2Natural Product Chemistry and Process Development, CSIR - Institute of Himalayan Bioresource Technology, Palampur, India

Received 29 June 2017;Accepted 6 July 2017;Published 1 September 2017
IAEES

Abstract
Hedychium spicatum (Family: Zingiberaceae) is an aromatic crop, which is an endangered due to their high demand in pharmaceutical industries and unplanned, untimely harvesting by local population. For its conservation by its multiplication and cultivation, a seed germination trial (RBD) was laid out using selected growth hormones (IAA, IBA and NAA) with 100, 200 and 500 mg/l concentrations during various months of 2004-05. In the first year (July 2004), higher germination percentage (22%) was recorded for 500 mg/l IBA. While in 2005, in the months of April, May and June the seed germination percentage increased significantly subsequently in each treatment with different concentration. In 2005, in comparison to IAA and NAA, the statistically significant seed germination was recorded in the month of June (32.33%). The plant height and root length increased significantly in second year as compared to first year. In a separate study (2002 to 2004), significant increased growth was recorded in sprouting, plant height and number of leaves, fresh rhizome biomass and yield when treated with BAP 25 mg/l. The rhizomes were analyzed for their essential oils content and chemical composition by gas chromatography (GC-FID). Thirty-six components were identified, representing 89.1-95.9% of the total oil.

Keywords Hedychium spicatum;rhizome;hormones;essential oil;1, 8-Cineole.


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