Received: 16-09-2013 / Accepted: 26-12-2013
Lily can be propagated by sexual and asexual means. There are many asexual propagation methods to produce bulbs: separation of younger, small bulbs from mature bulbs, offsets growing from parent plants, bulbils formed in the leaf axils, tissue culture or by scales.. The propagation by scaling method is used mainly in the countries producing lily bulbs. In Vietnam, this propagation method is hardly applicable. Therefore, this study aimed at finding the technical parameters for production of small bulbs by bulb scales. The most suitable main bulb perimeter to take scales is 20-22 cm. The scales are placed between land and coir layers to obtain high multiplication rate and quality of small bulbs. Cold treatment (50C) of small bulbs most rapidly transformed the starch and sugar into reducing and soluble sugar during the first 40 days of cold treatment. The results may serve as basis for further research in the production of lily bulbs by scaling method.