Emergência de plântulas de umbuzeiro após armazenamento das sementes em diferentes embalagens

Abstract

Aiming to evaluate the influence of storage packaging on the emergence of umbuzeiro plants, mature umbus were collected on a private property in the municipality of Sobradinho/BA. The ripe fruits were washed and pulped, and the pits (seeds) were dried in the shade. Tree batches were separated, and each one of batches was stored in one kind of packaging, in cardboard box, plastic bag and PET (Polyethylene terephthalate) bottle. After 12, 13, 14 and 15 months of storage, half of the seeds were immersed in water for 24 hours. Then, the seeds immersed or not in water for 24 hours were sown in washed coarse sand substrate. The emergence of plants was monitored daily to determine index of velocity emergency (IVE), medium time of emergency (TME), and at 60 days after planting, emergence percent (%E), length  of part aerea (size from root neck to apex) and root, diameter of root neck, root and xylopodium were determined. The experiment was carried out in series with 2 factorial (without imerse seed and imerse) x 3 (cardborad box, plastic bag and PET) in DIC, with tree repetition and 4 seeds per experimental unit. Under natural temperature conditions, the storage in cardboard boxes and plastic bag proved to be efficient, the PET bottle isn't efficient in keep the viability of the seeds, immersion in water was efficient in tests, the different packages did not showed influence in part aerea size and xylopodium diameter.