Abstract
In vitro axillary shoot proliferation was achieved from single-node explants of Indigofera tinctoria on a well-defined medium, Murashige and Skoog (MS) medium supplemented with 1.0 mg l−1 N 6-benzyl adenine (BA) and 0.1 mg l−1 indole-3-acetic acid. Axillary shoot meristems from cultures derived from up to three subcultures were used in the encapsulation–dehydration technique. Preconditioned, calcium alginate-encapsulated, and precultured axillary shoot meristems were subjected to different lengths of desiccation in a laminar flow cabinet. Maximum survival and regeneration rates of 56.7% and 62.2%, respectively, were obtained in half-strength (half the macro- and micronutrients and full-strength vitamins) MS medium supplemented with 0.5 mg l−1 gibberellic acid and 0.2 mg l−1 BA after 4 h of desiccation, during which the moisture content was reduced to 16.0%. According to the analysis of six random amplified polymorphic DNA markers, plantlets derived from cultures initiated with cryopreserved plant material were genetically identical to those derived from nonfrozen (control) tissues.
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The authors thank Dr. William Decruse, Scientist, Tropical Botanical Garden and Research Institute, Palode, Trivandrum, Kerala, India for his valuable advice in the in vitro conservation part of the study.
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Nair, D.S., Reghunath, B.R. Cryoconservation and regeneration of axillary shoot meristems of Indigofera tinctoria (L.) by encapsulation–dehydration technique. In Vitro Cell.Dev.Biol.-Plant 45, 565–573 (2009). https://doi.org/10.1007/s11627-009-9244-4
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DOI: https://doi.org/10.1007/s11627-009-9244-4