title: An in vitro method for rapid regeneration of a monopodial orchid hybrid Aranda Deborah using thin section culture.
abstract: A thin section culture system for rapid regeneration of the monopodial orchid hybrid Aranda Deborah has been developed. Thin sections (0.6-0.7mm thick) obtained by transverse sectioning of a single shoot tip (6-7mm), when cultured in Vacin and Went medium enriched with coconut water (20% v/v), produced an average 13.6 protocorm-like bodies (PLB) after 45 days, compared to 2.7 PLB formed by a single 6-7 mm long shoot tip under same culture condition. Addition of α-naphthaleneacetic acid to Vacin and Went medium enriched with coconut water further increased PLB production by thin sections. PLB developed into plantlets on solid Vacin and Went medium containing 10% (v/v) coconut water and 0.5 g l(-1) activated charcoal. With this procedure, more than 80,000 plantlets could be produced from thin sections obtained from a single shoot tip in a year as compared to nearly 11,000 plantlets produced by the conventional shoot tip method.
authors.affiliation: Plant Tissue Culture Laboratory, Department of Botany, National University of Singapore, Lower Kent Ridge Road, 0511, Singapore.
authors.forename: P
authors.initials: P
authors.lastname: Lakshmanan
authors.forename: C S
authors.initials: CS
authors.lastname: Loh
authors.forename: C J
authors.initials: CJ
authors.lastname: Goh