In vitroplant regeneration inHolarrhena antidysentericawall., through high-frequency axillary shoot prolieferation


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Abstract

SummaryAn efficient, rapid and large-scale propagation of the woody, aromatic and medicinal shrub, Holarrhena antidysenterica, through in vitro culture of nodal segments with axillary buds, is described. N6-benzyladenine used at 15 μM was the most effective in inducing bud break and growth, and also in initiating multiple shoot proliferation at the rate of 43 microshoots per nodal explant with axillary buds, after 30 d of eulture. By repeated subculturing of nodal explants with axillary buds, a high-frequency multiplication rate was established. Efficient rooting was achieved with 35 μM indole-3-butyric acid which was the most effective in inducing roots, as 80% of the microshoots produced roots. Plantlets went through a bardening phase in a controlled plant growth chamber, prior to ex vitro transfer Micropropagated plants established in garden soil were uniform and identical to donor plants with respect to growth characteristics and vegetative morphology.

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