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Published:
Apr 27, 2004Keywords:
Aerial yam Dioscorea Bulbifera in vitro
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An Efficient Protocol For Medium - Term Conservation of the Aerial Yam, <i>Dioscorea Bulbifera</i> L. <i>in Vitro</i>
Abstract
An efficient protocol for medium-term conservation of the aerial yam, Dioscorea bulbifera is hereby reported. Meristem and nodal segments from five-week old plants cultured in half strength MS or B5 medium containing 12 per cent sucrose and 0.5 mg l-1 abscisic acid [ABA] were successfully stored for 15 months at 25± 2oC without loss of morphogenetic capacity. Subculturing of the explants in full strength MS containing low levels of benzyl adenine (2.0-5.0 mg l-1) and reduced sucrose concentration [2.0 per cent ] resulted in vigorous shoot growth after 6 weeks in culture, whereas incorporating ABA (0.2-0.5mg l-1) in the second passage culture medium resulted in the depression of shoot growth and shortening of the time to tuberization on transfer to the field after hardening.
Bio-Research Vol.1(1) 2003: 43-52
Bio-Research Vol.1(1) 2003: 43-52
