EXAMINATION OF THE PHENOTYPIC VARIABILITY OF THE MUSCAT HAMBURG VARIETY INTHE SKOPJE VINEYARD AS A BASIS FOR ISOLATING CLONES

Abstract

ABSTRACTThis paper describes the experiments performed on the Muscat Hamburg variety in the Skopje vineyard. Initial examinations were made in 2013-2014 in the collection plantations of the Agricultural Institute where the Muscat Hamburg variety was grown. In the then plantation were found 3 individual grapevines(units)in which differences in morphological and physiological characteristics were identified.Such grapevines are marked as individuals, monitored and taken from them for propagation material (they are vegetatively propagated by individual producers, and the seeds are used for laboratory tests). In fact, the phenotypic variability of the variety was monitored. In the following years, from 2013-2019, phenotypic variations were observed in other individualplantations and individual grapevines in the conditions of the Skopje vineyard.Most of the changes in the individual units of the Muscat Hamburg variety are manifested in the bunch, grain, fertilization, phenology, frost resistance and some technologicalcharacteristics. For example, in these units the grape is more compact, with better fertilization, darker color, the phenological feature of maturation takes place earlier and so on. Freezing resistance of these units is higher.They have the potential for better technological characteristics that would be used further for better product quality -wine, spirits and more.These units are the basis for obtaining improved properties in clonal selection and hybridization.