Abstract
Morphogenic potential of cabbage cv. Pride of India, for multiple shoot induction was tested under in vitro conditions using cotyledon and hypocotyl explants. Aseptically grown seven to nine days old seedlings of cabbage were used as source of explants for reproducible plant regeneration studies. Forty different concentrations and combinations of TDZ (alone), TDZ with adenine, TDZ with NAA and TDZ with IAA were tried. Maximum shoot regeneration response from cotyledon explants (91.11%) and hypocotyl (94.40%) was obtained on MS medium containing 0.330mg/l TDZ+79.70mg/l Adenine and 0.220mg/l TDZ+0.088mg/l IAA, respectively. Rooting was achieved within two to three weeks on all the rooting media, but MS medium containing 0.10mg/l NAA produced the maximum number of strong and healthy roots (100%). The regenerated complete plantlets with healthy roots and shoot system were transferred to pots containing sterilized cocopeat and successfully acclimatized and no phenotypic variations were observed among regenerated plants. Highly efficient, reproducible plant regeneration protocol has been standardized in cabbage cv. Pride of India, which would be valuable for Agrobacterium-mediated gene transfer studies in cabbage.
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