Open AccessA SIMPLE AND EFFICIENT MICROPROPAGATION PROTOCOL FOR DEVELOPING PLANTLETS OF EXACUM BICOLOR ROXB. – AN ENDANGERED, ORNAMENTAL, AND ANTIDIABETIC HERB
Author(s) -
Sharad S Achar,
Saisha Vinjamuri
Publication year - 2021
Publication title -
asian journal of pharmaceutical and clinical research
Language(s) - English
Resource type - Journals
eISSN - 2455-3891
pISSN - 0974-2441
DOI - 10.22159/ajpcr.2021.v14i5.40966
Subject(s) - kinetin , gibberellic acid , shoot , callus , micropropagation , biology , explant culture , ornamental plant , horticulture , botany , herb , murashige and skoog medium , germination , traditional medicine , medicinal herbs , biochemistry , in vitro , medicine
Objective: Exacum bicolor Roxb. is an endangered medicinal herb due to overexploitation by humans and its inefficient vegetative reproduction. Here, we report an efficient and simple procedure for the regeneration of E. bicolor Roxb. using leaf as an explant.
Methods: The optimal concentrations of the hormones needed for callus induction were determined by full factorial method using DOE (Design expert ver. 8.0). The hormones selected based on literature were kinetin, indole acetic acid, and 6-Benzylaminopurine (BAP). Multiple shoot regeneration was carried out in liquid and solid media with the optimal concentrations of the hormones obtained by DOE. Rooting was initiated using Murashige and Skoog media containing naphthalene acetic acid 0.5 mg/l, indole butyric acid (IBA) 1.0 mg/l, and gibberellic acid 3 0.5 mg/l along with 0.2% of activated charcoal.
Results: Analysis of full factorial design run showed that BAP in combination with kinetin was effective for the growth of callus and multiple shoot regeneration was higher in liquid media (81.25%). The rate of rooting was observed to be 88.23% and the average number of roots was 0.26. Plantlets with budding apical region and well-established leaves and roots were observed in 30 days.
Conclusion: The protocol reported here can be used for effective production of E. bicolor plants in a shorter duration compared to the conventional approach.