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9 July 2008 In vitro propagation of a high value medicinal plant: Asparagus racemosus Willd
Nishritha Bopana, Sanjay Saxena
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Asparagus racemosus Willd. is an important medicinal plant of tropical and subtropical India. Its medicinal usage has been reported in the Indian and British Pharmacopoeias and in traditional systems of medicine such as Ayurveda, Unani, and Siddha. The multiple uses of this species have increased its commercial demand, resulting in over-exploitation. Because of destructive harvesting, the natural population of A. racemosus is rapidly disappearing, and it is recognized as ‘vulnerable’ (Warner et al., Some important medicinal plants of the Western Ghats, India: a profile. International Development Research Centre, Artstock, New Delhi, India, 15 pp, 2001). The development of an efficient micropropagation protocol will play a significant role in meeting the requirements for commercial cultivation, thereby conserving the species in its natural habitat. In the present study, in vitro shoot proliferation was obtained by culturing single node segments in Murashige and Skoog's (MS) medium supplemented with 3.69 μM 2-isopentyl adenine and 3% sucrose with a multiplication rate of 3.5. For proper root formation, the in vitro-formed shoot clusters were cultured on half strength (major salts reduced to half) MS medium with 1.61 μM 1-naphthalene acetic acid, 0.46 μM kinetin, 98.91 μM adenine sulfate, 500 mg/l malt extract, 198.25 μM phloroglucinol, and 3% sucrose. On this medium, 85% rooting was observed within 20 d. Following a simple hardening procedure involving sequential transfer of plants to a greenhouse, polyhouse, and shade net, the tissue-cultured plants were transferred to the field where the survival rate was 100%.

Nishritha Bopana and Sanjay Saxena "In vitro propagation of a high value medicinal plant: Asparagus racemosus Willd," In Vitro Cellular and Developmental Biology - Plant 44(6), 525-532, (9 July 2008).
Received: 31 January 2007; Accepted: 19 March 2008; Published: 9 July 2008

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Asparagus racemosus Willd
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