Role of biotechnology in the development and production of Lachenalia and Ornithogalum cultivars in South Africa

afrique du sud almacenamiento biotechnologie végétale biotecnología vegetal embriones vegetales embryon végétal in vitro ornamental bulbs plant biotechnology plant embryos plantas de bulbo ornamentales plante ornementale bulbeuse poliploidia polyploidy polyploïdie south africa stockage storage sudáfrica variedades varieties variété