MORPHOLOGICAL ASPECTS ON THE IN VITRO DEVELOPMENT OF THE PLANTLETS FROM THE LOCAL POTATO VARIETIES COLLECTION, PRESERVED IN SLOW GROWTH CONDITIONS AT SUCEAVA GENEBANK

Abstract

Based on the phenotypic evaluation of the over 100 potato genotypes from the "in vitro" collection, the analysis of the modes of manifestation for the main morphological aspects of the plantlets (type of shoots, leaflets and roots, generation of microtubers etc.), a large number of reactions to slow growth conservation conditions were identified. Variability appeared mainly through the way of reaction of different genotypes, the morphological appearance of the plantlets for the same genotype, on different culture media, being relatively similar. Rezumat Pe baza evaluării fenotipice a celor peste 100 de genotipuri de cartof din colecția "in vitro", a analizei modurilor de manifestare a principalelor aspecte morfologice ale plantulelor (tipul lăstarilor, al frunzulițelor și rădăcinițelor, generarea de microtuberculi etc.), a fost identificat un număr mare de reacții la condițiile de conservare prin creștere lentă. Variabilitatea a apărut mai ales prin modul de reacție a diferitelor genotipuri, aspectul morfologic al plantulelor la același genotip, pe diferite medii de cultură, fiind relativ similar.