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|Title:||In vitro propagation of threatened terrestrial orchid, Malaxis khasiana Soland ex. Swartz through immature seed culture|
|Authors:||Deb, Chitta Ranjan|
|Keywords:||Activated charcoal;Immature seed culture;In vitro hardening;Mass multiplication;Plant growth regulators|
|Abstract:||Rapid in vitro propagation of the terrestrial orchid, M. khasiana through immature seed culture was achieved. Immature seeds of 8-9 week after pollination (WAP) cultured on MS medium (2% sucrose) supplemented with 500 mgl-1 casein-hydrolysate and 1 M N6-benzyladenine (BA) exhibited germination of 75% seeds after 107 days of culture and subsequently supported the development of PLBs. Subsequent culture on MS medium enriched with 6 M of indole-3-acetic acid (IAA), 18 M each of BA and kinetin induced multiple shoots and plantlets. Transfer of PLBs to MS medium with 0.1% activated charcoal (AC) facilitated rapid proliferation of PLBs, while AC at 0.2% favored shoot bud induction and rhizome enlargement. The plantlets, developed on medium with IAA, BA and kinetin, after hardening in vitro for 8-10 weeks were planted in community pots and transferred to poly-house. The plantlets showed 65% survival under field conditions.|
|ISSN:||0975-1009 (Online); 0019-5189 (Print)|
|Appears in Collections:||IJEB Vol.44(09) [September 2006]|
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