JOURNAL OF BIOSCIENCE AND BIOTECHNOLOGY DISCOVERY
Integrity Research Journals
ISSN: 2536-7064
Model: Open Access/Peer Reviewed
DOI: 10.31248/JBBD
Start Year: 2016
Email: jbbd@integrityresjournals.org
Role of phytohormone on in vitro regeneration of tea [Camellia sinensis (L.) O. Kuntze]
https://doi.org/10.31248/JBBD2023.186 | Article Number: 4C51E6841 | Vol.8 (4) - August 2023
Received Date: 05 June 2023 | Accepted Date: 04 July 2023 | Published Date: 30 August 2023
Authors: Mokaram Hanifa Koly , Md. Ekramul Hoque , Khadiza Khatun , Kazi Meftahul Jannat and Md. Rafiqul Islam*
Keywords: Callus induction, MS media, phytohormone, shoot regeneration, tea.
Phytohormones are small molecules present in very low concentrations in plants and provide a promising strategy to improve mass culture biotechnology due to their intrinsic role in growth, development, and survival. This study is aimed at evaluating the effect of different plant growth regulators on in vitro callus induction and shoot regeneration in tea. The experiment was conducted at Complete Randomize Design (CRD) with three replications. Callus induction and shoot regeneration was done by using Murashige & Skoog (MS) media supplemented with various concentrations and combinations of Naphthalene Acetic Acid (NAA), Benzyl Adenine (BA), and 2,4-Dichlorophenoxyacetic Acid (2,4-D). Shoot tips and nodal segments were used as explant. The highest percentage (86.51%) of callus induction was observed in the combined treatment of 2.00 milligram per litre (mg/L) BA + 1.50 mg/L 2, 4-D in 2.12 weeks. The same treatment produced the highest weight of calli, which was 0.18, 0.56, and 1.11 grams (g) for 6, 10, and 14 weeks after inoculation (WAI), respectively. The highest percentage (84.39%) of shoot induction was recorded with 2.00 mg/L BA + 2.00 mg/L NAA in 32.43 days. The maximum number (1.42, 2.46, and 4.49) and the highest length of the shoot (1.41, 3.28, and 4.61 cm) at 60, 90, and 120 DAI (days after inoculation) were also recorded from the same treatment. No callus or shoot induction was recorded in the controlled treatment. The protocol developed from the present study might be useful for the large-scale production of healthy, disease-free planting material for tea.
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