Emergência de plântulas e propagação por enxertia de fruteira pão

Abstract

The aim of this study was to evaluate the influence of seed size on emergence and initial development of seedlings of breadfruit tree and the efficiency of the technique of grafting to rootstocks of different ages. In the first experiment the seeds of breadfruit tree variety seminifera were characterized by length, thickness, width, weight and moisture content, and then classified according to individual mass in small (<4.99 g), medium (5.00 to 6.99 g) and large (> 7.00 g). These classes were the treatments of the experiment in a completely randomized design with three replications to evaluate the effect of seed size on seedling emergence percentage and emergence rate index (IVE), height, stem diameter, root length and the air dry weight of shoot and root and relationship between shoot and root. The results showed that the breadfruit tree seeds show variation in the physical characteristics of length, diameter, mass and moisture. The seed mass does not influence the emergence and early seedling development of breadfruit tree. In the experiment of grafting by grafting of top cleft, the rootstocks used were obtained from seeds and breadfruit tree experimental design was completely randomized with five replicates of ten plants per experimental unit, the forks were used from matrices the variety seedless (apyrena). The diameter of the stem, plant height, percentage of fruit set, percentage of graft survival, number of shoots, number of leaves and length of graft largest bud in four different ages (2, 4, 6 and 8 months after emergency). It was found that under conditions in which the study was performed, it is recommended that bread, fruit tree grafting onto rootstocks four months of age and a mean diameter of 10.52 mm.