Poder germinativo de sementes de jambolão [Syzygium cumini (L.) Skeels] de acordo com o tempo de secagem posterior ao hidrocondicionamento

Abstract

The Syzygium cumini ( L. ) Skeels fruit tree is belonging to the Myrtaceae exotic species being cultivated in several countries, including Brazil. This fruit bowl has great potential, mainly due to its medicinal properties. However, these capabilities are still not commercially exploited, having to form commercial orchards. So if you must leave for studies for the production of healthy seedlings. Typically, the spread of jambolan is by seeds presenting feature of polyembryony, though not always with desirable germination. The objective of this study was to analyze the germination of seeds jambolan submitted to different drying times after the hydropriming. The experiment was conducted at the Laboratory of Plant Physiology and Colleges of Education and Research Nursery Seedling Production, Universidade Tecnológica Federal do Paraná, Câmpus Dois Vizinhos. From mature seeds jambolan was used. The seeds were extracted manually. Following the extraction, the seeds were kept in the shade 24 hours, and then weighed. After the seeds were hidrocondicionadas in water for 24 hours, its weight being made to obtain fresh weight after hydropriming. Then the seeds were hidrocondicionadas drying BOD using a temperature of 25 ° C for time 0, 12, 24, 36 , 48, 60 , 72, 84 and 96 hours. Each subsequent period of drying, the seeds were reweighed to obtain the fresh weight after drying. Each elapsed period of drying, the seeds were sown in beds of sand. The experimental design was completely randomized, with 9 treatments, 4 replicates of 100 seeds per experimental unit. At sixty days, the percentage of emergence index and emergence rate were analyzed. However the results were satisfactory, thus allowing it to adopt hydropriming followed by drying seeds jambolan, for up to 96 hours at 25 ° C, without prejudice to the emergence percentage and emergence rate index.