This thesis deals with the evaluation renge of North American asters species Symphyotrichum Ness. Furthmore by their history, morphological, physiological, cultivation and introductionhistorical aspect. In this thesis was evaluated 85 kind and varieties of the genus Symphyotrichum Ness and existing range of collection ZF MENDELU expanded to 138 pieces autumn asters. Part of this work is to compare varieties of these specials and recommendations for the best of them, for gardeners, and for use in urban greenery.

The diploma thesis “Post-harvest Quality of Cut Flowers” aims at the description of solutions and technologies that are able to prolong the vase life of cut flowers and the other new products and techniques that lead to extending the storage time. The thesis also describes the factors that negatively influence the vitality of cut flowers and shorten the vase life. The development of the new solutions and techniques improves the care for the cut flowers, their durability and vitality. The practical part of this thesis covers the experiment which evaluates individual post-harvest commercial solutions. For the purpose of the experiment the Dahlia and Symphyotrichum had been chosen and the vase life of above-mentioned cut flowers was observed. The selected commercial solutions were FloraLife 300, FloraLife Express Clear ULTRA 200. Moreover, one of the solutions was homemade and included sugar and Savo original, which is a Chlorine- containing household disinfectant. The control sample was put into tap water.

Thèse numérisée par la Division de la gestion de documents et des archives de l'Université de Montréal.

Thèse numérisée par la Division de la gestion de documents et des archives de l'Université de Montréal