Indian Journal of Science and Technology
DOI: 10.17485/ijst/2010/v3i7.17
Year: 2010, Volume: 3, Issue: 7, Pages: 781-786
Original Article
M. Vijayakumar1 , R. Vijayakumar2 and R. Stephen3*
1 Dept. of Biotechnology, Vinayaka Mission University, Salem - 636 308, TN, India
2 Research Dept. of Microbiology, Bharathidasan University College for Women, Orathanadu – 614 625, TN, India
3 Dept. of Botany, Government Arts College, Ariyalur – 621 713, TN, India
[email protected]
We report the micropropagation of Bacopa monnieri L. a medicinal plant from Shervarayan Hills, Salem, Tamil Nadu, India. Effect of auxins (IAA, NAA & 2, 4-D) and cytokinins (BA, KIN & TDZ) on shoot induction and IAA and TDZ on root induction were assessed. Callus induction on Murashige and Skoog’s medium (MS) supplemented with NAA, 2,4-D and TDZ at various combinations/concentrations were also investigated. The auxiliary buds formed from both leaf and nodal explants on hormone free MS medium within 9 d. Growth hormones at different combinations brought out remarkable variations in shoot, root and callus induction. Rooted plantlets were transferred to 10 different soil mixtures with various ratio/combinations of biological and natural fertilizers such as humus rich soil alone (control), soil with vesicular arbuscular mycorrhizae (VAM) (10:1 & 10:2) soil with vermicompost (4:1 & 4:2) soil with farmyard manure (4:1 & 4:2) soil with flyash (1:1 & 1:2) and soil with agropeat (4:1 & 4:2) in sterile polythene bags. When the plantlets were transplanted to the actual field, this pre-adaptation increased their survival as much as 80-90% (observed for 45 days).
Keywords: Bacopa monnieri L., growth hormones, auxiliary shoot proliferation, transplantation.
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