Yellow mombin is a fruit tree that grows spontaneously in the Semi-Arid Northeastern Brazil. Its fruits are still extractively exploited. The pulp of yellow mombin fruit stands out regarding the commercial aspect due to the characteristic flavor and aroma felt when consumed in diverse ways. This study aimed to evaluate the presence of bioactive compounds, total extractable polyphenols, and antioxidant activity of yellow mombin fruits (Spondias mombin, L.), from clone and ungrafted genotypes. The fruits were harvested at commercial maturity from twelve yellow mombin tree genotypes from an experimental orchard located at the municipality of Joao Pessoa, Paraíba, Brazil, and evaluated for chlorophyll, carotenoids, yellow flavonoids, total extractable polyphenols, and antioxidant activity, which was measured by the β-carotene/linoleic acid method. The antioxidant activity showed a percentage of inhibition of oxidation higher than 75% for all genotypes evaluated at the time of 120 minutes. The fruits from clone genotypes showed a higher percentage of antioxidant activity.

RESUMO -A mangaba (Hancornia speciosa Gomes) tem a via sexuada como principal forma de propagação. São escassas as pesquisas referentes à extração de suas sementes; entretanto, a viabilidade e o vigor dependem diretamente do método empregado. O presente trabalho teve como objetivo avaliar a qualidade fisiológica de sementes de mangaba extraídas sobre três métodos, sendo um manual (peneira) e outros dois mecânicos (despolpadeira e batedeira). Em seguida, as sementes foram submetidas aos testes de umidade, germinação, condutividade elétrica, primeira contagem, emergência de plântulas em areia e massa seca de plântulas. A extração manual proporcionou sementes com maior qualidade fisiológica, e entre os métodos mecânicos, a batedeira resultou em sementes mais viáveis e vigorosas, enquanto a despolpadeira provocou danos agudos. Termos para indexação: Hancornia speciosa, semente, viabilidade, vigor. DIFFERENT EXTRACTION METHODS AIMING MANGABA SEEDS QUALITYABSTRACT -Mangaba (Hancornia speciosa Gomes) has the sexual way as the main propagation form. Researches regarding the extraction of its seeds are scarce; however, viability and vigor depend directly on the applied method. The present work had as objective to evaluate physiologic quality of extracted mangaba seeds on three methods, in which one is manual (drizzles) and the other two are mechanical (content removing device and mixer), further the mentioned seeds were submitted to humidity, germination, electric conductivity, first count, seedling emergence and seedlings dry mass tests. Manual extraction provided seeds with a larger physiologic quality and, among mechanical methods; the mixer resulted in viable and vigorous seeds, while the content removing device caused sharp damages.

RESUMO-A necessidade de técnicas de propagação assexuada recomendadas para a produção comercial de mudas limita a expansão comercial da cajazeira. Portanto, foi instalado um experimento na Empresa de Pesquisa Agropecuária da Paraíba -EMEPA, com o objetivo de avaliar o melhor método de enxertia para a cajazeira. Adotou-se o delineamento experimental em blocos ao acaso, com quatro repetições, em esquema de parcelas subdivididas no tempo, estando nas parcelas os métodos de enxertia (garfagem em fenda cheia, inglês simples e fenda lateral) e nas subparcelas os períodos de avaliação (8 períodos). Cada unidade experimental foi constituída por 12 plantas. As avaliações de crescimento, comprimento da brotação dos enxertos (cm), diâmetro da brotação do enxerto (mm) e número de brotações por enxerto foram realizadas quinzenalmente, a partir da instalação do ensaio. O percentual de pegamento dos enxertos foi determinado aos 120 dias após a realização da enxertia. Os dados foram submetidos e interpretados através de análise de variância. Os maiores percentuais de pegamento de enxertia na cajazeira foram verifi cados nos métodos de garfagem a inglês simples e fenda lateral. O crescimento dos enxertos foi mais vigoroso na garfagem inglês simples. Termos para indexação: Spondias mombin L., propagação assexuada, garfagem em fenda cheia, garfagem em inglês simples, garfagem em fenda lateral. GRAFTING OF YELLOW MOMBIN TREEABSTRACT-The need for asexual propagation techniques recommended for commercial seedlings production, limits the commercial expansion of yellow mombin tree. Therefore, an experiment was set at the Empresa de Pesquisa Agropecuária da Paraíba -EMEPA with the aim of evaluating the best method of grafting for yellow mombin tree. It was used the randomized block design with four replications in a split-plot in time scheme, standing in the plots the methods of grafting (cleft grafting, splice grafting, and side-veneer grafting), and in the sub-plots the periods of evaluation (8 periods). Each experimental unit consisted of 12 plants. The assessments of growth, sprout length of the graft (cm), diameter of the shooting of graft (mm), and number of shoots per graft were carried out each fi fteen days since the setting of the assay. The percentage of grafting success was determined at 120 days after grafting. The data were analyzed and interpreted using analysis of variance. The highest percentages of grafting success for the yellow mombin tree were verifi ed for the methods of splice grafting and side-veneer grafting. The growth of the grafts was more vigorous in the splice grafting.

The high rate of fruit decay and berry drop reduces quality and increases postharvest losses in 'Isabel' grapes, requiring pre-harvest and postharvest management practices available to the small-scale farmer, which maintain quality and extend postharvest life of the clusters. The objective of this study was to evaluate the effect of the pre-harvest application of CaCl 2 and Citrus Biomass-based elicitor in 'Isabel' grapes, in the maintenance of quality during storage at room conditions under ambient and modified atmospheres. The experiment was conducted in a randomized block design with 8 replicates, in the field located at the municipality of São Vicente Férrer-PE, Brazil. 'Isabel' vines were treated 28 days before harvest with: Citrus Biomass-based elicitor (CB), Citrus Biomass-based elicitor + CaCl 2 (CB + C), CaCl 2 (C) and Control (T) -without application. Grapes harvested in the commercial maturity were stored in a 4 × 2 × 7 factorial arrangement, with 4 treatments (applied in the field), 2 storage conditions, ambient (AA) and modified (AM) atmospheres, under room conditions (25 ± 2 °C and 75 ± 2% RH) and 7 evaluation periods in four replicates. The application of CaCl 2 and CB-based elicitor reduced the berry drop index (55 and 75%, respectively), the decay and weight loss of 'Isabel' grape clusters. These treatments, associated or not, increased MA efficiency in maintaining cluster quality. The 'Isabel' grape berry drop index was directly influenced by the SS/TA ratio, pH and fruit decay index. Key words: Modified atmosphere. Berry drop. Resistance inducers. Decay. Vitis labrusca. ResumoO alto índice de degrana e podridão das bagas reduzem a qualidade e elevam as perdas pós-colheita em uvas 'Isabel', demandando técnicas de manejo na pré e pós-colheita acessíveis ao pequeno produtor, que mantenham a qualidade e ampliem a vida útil pós-colheita dos cachos. Assim, este trabalho teve por objetivo avaliar o efeito da aplicação na pré-colheita de CaCl 2 e elicitor à base de biomassa cítrica em uvas 'Isabel' na manutenção da qualidade durante o armazenamento na condição ambiente sob atmosferas ambiente e modificada. O experimento foi conduzido em blocos casualizados a campo, no município de São Vicente Férrer-PE com 8 repetições. Videiras 'Isabel' foram tratadas, 28 dias antes da

To produce seedlings with quality is one of the factors that mostly contribute to increase the production chain of a fruit crop. The use of organic substrates in the production of seedlings becomes a way to reduce costs by using raw material available regionally. Then, the aim of this study was to evaluate the influence of rooting inducers and the contribution of organic substrates to improve the rooting of herbaceous cuttings of 'Paluma' guava. The experiment was completely randomized arranged in a 5×2 factorial design with 4 replications and 10 cuttings per plot. The factors comprised five substrates (S1-100% OC; S2-25% CRH + 75% OC; S3-50% CRH + 50% OC; S4-75% CRH + 25% OC; S5-100% CRH), where CRH: carbonized rice husk and OC: organic compost, and 2 rooting inducers (Radimaxi 20 ® and Indolbutyric Acid -IBA), with the concentration of 2000 mg L -1 . With regard to the analyzed variables, rooting, mortality, length of roots, and dry weight of shoots and roots did not fit with any regression model. However, the live rootless cuttings, callus, sprouting, leaf retention, and number of roots showed interaction between the inducers and the used substrates. The maximum rooting percentage obtained was 20%, independently of the type of inducer or used substrate; the use of Radimaxi 20 ® provides greater percentage of cuttings with callus and live rootless cuttings; the carbonized rice husk in composition S2 (25% CRH + 75% OC) is indicated to compose the rooting substrate of 'Paluma' guava cuttings; despite the satisfactory results obtained in this work, more studies are needed to clarify the rhizogenic process of guava in diversified conditions.