Emergência de plântulas de jambo em função da forma de coleta e submetidas a diferentes temperaturas

Abstract

The market for jambo (Syzygium malaccense (L.) Meer. & L.M. Perry) has grown in recent years, attracting the attention of Brazilian producers, who seek diversification in production and better prices in the fruit trade. Today there is no record of any variety, with most orchards formed by seedlings produced by seeds. Thus, the work aimed to verify the emergence of seedlings of jambo from seeds collected in the soil and in the crown under different temperatures. The experiment was conducted at the Plant Propagation Laboratory of the Engineering and Agricultural Sciences Campus – CECA/UFAL. The jambo seeds used were extracted from ripe fruits of red jambeiros, collected from seven trees located on the premises of the CECA (soil and treetops). A completely randomized experimental design was adopted, in a 2x5 factorial scheme, with two forms of collection (soil and canopy) and five temperatures (20, 25, 30, 35, 20-30 oC). The evaluated parameters were: water content, first emergency count, emergency, emergency speed index, root and shoot length and seedling dry mass. It was observed in the work that the jambo seeds germinated at different temperatures, which allows their colonization in greater habitat diversity, thus facilitating their dispersion. Jambo seeds from fruits collected in the soil exhibited greater physiological potential.