Campomanesia phaea has commercial interest because its fruits are used in the manufacture of several products, besides its high nutritional potential. Nevertheless, it has low germination potential and there is not much information in the literature. The aim of this study was to perform a biometric characterization and to establish the tetrazolium test for cambuci seeds. Seeds obtained from two collection periods were subjected to biometric evaluations (seed length, thickness, width and mass), water content, determination of the soaking curve and tetrazolium test. The soaking curve was performed with non-scarified seeds and seeds subjected to two scarification methods, mechanical and chemical. The tetrazolium test was performed soaking the seeds in a solution of 2, 3, 5 triphenyl tetrazolium chloride salt at 0.75, 1.00 and 1.50% for 4, 8 and 12 hours. After this period, the seeds were categorized as viable and non-viable. It was concluded that the cambuci seeds presented biometric differences between the two collection periods, because of the different water contents. There was no difference in the soaking curve among the three treatments tested and the solution of 0.75% for four hours in a water bath at 38 oC was considered the best for performing the tetrazolium test.

Considering its adaptation to tropical countries, sweet tamarind (Tamarindus indica L., Fabaceae) has been gaining space in the food and pharmaceutical industry due to its nutraceutical richness. The lack of research on the propagation of non-traditional tropical fruits has been a barrier to the production of large-scale seedlings and to the availability of products in the food and pharmaceutical markets. Thus, the objective of this experiment was to evaluate the influence of collection periods and exogenous indolbutiric acid (IBA) concentrations on rooting of softwood, semi-hardwood and hardwood sweet tamarind cuttings, aiming the production of seedlings. For this, cuttings with 18 cm length were collected in winter and spring, being planted in polyethylene trays filled with medium texture vermiculite. The experiment was conducted in a greenhouse of Pad&Fan type with temperature and controlled humidity. The experimental design was completely randomized in a factorial design (2 collection times x 3 types of cuttings x 5 concentrations of IBA) with four replicates of 10 cuttings. After 90 days, the following variables were evaluated: the percentage of rooted cuttings and dead cuttings; root number; length of the largest root (cm); and shoot number. It was observed that soft-wood cuttings had a higher rhizogenic capacity, influenced by the collection season, with winter being the best time. The highest percentage of dead cuttings was observed in semi-hardwood and hardwood cuttings, both when collected in winter and in spring. The number of roots in soft-wood cuttings was higher in the 1,500 mg kg-1 concentration of exogenous IBA and when collected in winter this material also showed a higher number of shoots. It can be concluded that sweet tamarind softwood cuttings harvested in winter and treated with 1,500 mg kg-1 of exogenous IBA support the percentage of rooted cuttings, number of roots and shoots, showing a better rhizogenic capacity. Highlighted Conclusion The use of 1,500 mg kg-1 of exogenous IBA favors the rooting capacity of sweet tamarind softwood cuttings collected in the winter season.

Agradeço, primeiramente, à Deus pela força e coragem durante esta caminhada, por ser sempre meu sustento e meu guia.Aos meus pais Denise e Marildo por todo apoio e compreensão, por não medirem esforços para que eu chegasse até essa etapa da minha vida, por acreditarem em mim. À minha irmã Mariele pela paciência, amor e incentivos constantes.Ao meu noivo Eduardo por toda ajuda e incentivo, por ser compreensivo, paciente e presente em todos os momentos desta fase.Aos meus avós e todos meus familiares por todo amor e confiança dedicados a mim.

The objective of this work was to evaluate air layering, cutting, and grafting, with different indolebutyric acid (IBA) rates, for the vegetative propagation of Eugenia involucrata. Air layering was carried out for two consecutive years with five different IBA rates. Cutting was tested for woody and herbaceous cuttings, using four IBA rates, in three seasons. The grafting methods – cleft graft and splice graft – were tested in two seasons. For the air layering, cutting, and grafting trials the experimental designs were randomized complete blocks, completely randomized in a 3x4 factorial arrangement, and completely randomized, respectively. Plants were evaluated for rooting, survival percentage, and shoot development. In air layering, low rooting rates of 0 to 50% were observed, the use of IBA showed no consistent results, and no resulting propagules survived after being transplanted. The cutting technique showed low survival, rooting, and leaf retention rates, with no consistent effect of IBA rates. Grafting showed 35 to 50% graft fixation, with no significant difference between the splice and cleft grafting techniques. The air layering and cutting techniques are not efficient for the propagation of E. involucrata, as they do not favor the survival and rooting of seedlings. Grafting, by both techniques, is the most efficient method for E. involucrata propagation.