Qualidades fisiológicas de sementes de Astronium urundeuva (M.Allemão) Engl. Armazenadas em diferentes embalagens e ambientes.

Abstract

Astronium urundeuva (M. Allemão) Engl. belongs to the Anacardiaceae family, native to Brazil, has great socioeconomic potential, its intense and predatory exploitation, has resulted in the decrease of its population in the natural environment, so the storage of its main propagation unit is of extreme necessity. Therefore, this work aimed to study the physiological quality of A. urundeuva seeds during storage in different packages and environments. The research took place in the year 2019 to 2020 and was conducted in the spaces of the Ecology and Botany Laboratory (LAEB) and the Seed Technology Laboratory, located at the Center for Sustainable Development of the Semiarid Region of the Federal University of Campina Grande (CDSA/UFCG), Sumé-PB campus. Seeds were collected from adult matrices located in the municipality of Camalaú-PB and taken to the laboratory, where they were homogenized, and placed in different packages (Kraft paper bag, glass and plastic packaging) and stored in laboratory environments (without control of temperature and relative humidity) and frezzer (controlled conditions of temperature and humidity), for a period of seven months. In each month of storage, the following parameters were evaluated: water content, emergence, emergence speed index, length and seedling dry mass. Thus, it was possible to verify that, during storage, the environments and packaging influenced the decrease in seed vigor, where the reduction was more accentuated when the seeds were stored in paper packaging in a laboratory environment, increasing the speed of their deterioration. However, the packaging in glass and/or PET packaging in a laboratory and freezer environment can preserve seeds of this species for a period of 180 days, promoting the maintenance of their vigor. The packaging in paper packaging, on the other hand, was not efficient, as it provided significant losses of the variables used to characterize the maintenance of the physiological quality of seeds in different environments.