Soluções de pulsing e de manutenção pós-colheita de flores de corte

Abstract

Growing flowers for cut is part of floriculture agrobusiness, whose characteristic is the cultivated are profitability as well as jobs and income generation. All stages of the production process as well as the post-harvest procedures influence upon both end product quality and yield profitability Among the cultivated grown species in Minas Gerais State anthurium, calla lily, and Gerbera can be mentioned for their importance and yield expansion potencial. This work aimed at evaluating sugar, dychlorine isocianurate of sodium, and sodium hypochlorite in both pulsing and flowers maitainance solutions in order to keep anthurium, calla lily, and gerbera quality and post-harvest durability. Anthurium flowers stems were stored in sugar solution (20%) and water for 24 hors and then removed to the preservative solution containing dychlorine isocianurate of sodium (DIS), sodium hypochlorite or water. The use of DIS antecipated anthurium senescence. The inflorescences kept in water after being stored in sugar pulsing solution remained three more days in the commercial pattern when compared to those on the other treatments. Two trials were carried out on calla lilly flower stems. In the first one flower stems early harvested were treated with pulsing (six sugar concentrations) for 24 hours. Longer durability was noticed in the flower stems treated with 0% sugar in the pulsing solution. The secong trial aimed at studying the effect of DIS used as a preserving solution of calla lily flower stems harvested at different satages of spata opening. The flower stems longevity was not influenced by DIS. These which were harvested when their spata was still close or one third opened had higher quality and durability. In the work carried out on Gerbera their flower stems were treated with five sugar concentrations either in presence or in absence of DIS. Longer durability and less mass loss could be noticed when the sugar solution was 4% in presence of DIS.