Piper aduncum L. is a shrub specie, found mainly in soil with elevated organic matter and humidity. The essential oil containing insecticide and bactericide action, and also has broad application in agricultural and medicinal areas. The objective of this study is to characterize the lamina of P. aduncum. There was realized anatomical and histochemical characterization of paradermic, and anatomical characterization of transversal sections from apical region, median and basal of leaf blade, prepared according to usual technique of light and electronic microscopy of scaning. The mesophyll is dorsiventral with subcelular layer in both epiderms. In the epidermis and subcelular layers, it was only found the presence of total protein. In the palisade and spongyous parenchyma were found starch total and insaturated lipids. In the fundamental parenchyma there were visualized starch, protein, total lipids, ortodihidroxiphenols and terpenoid with carbonil group. There are present unicellular idioblasts in subcelular layers, epiderm or mesophyll. It is hipoestomatic, contains tetracitic stomates. There were observed short trichome tector unicellular with fine cap, pluricelular with fine cap and glandular sac- like trichome and perolated glandula. In the basal portion of the tector trichomes there were found total protein. In the oil idioblast there were observed the presence of total lipids, ortodihidroxiphenols, sesquiterpenic lactones and terpenoid with carbonil group, while it was possible to observe in the sac-like trichomes, protein, total lipids and ortodihidroxiphenols.

Piper aduncum L. (Piperaceae) es una especie arbustiva umbrófila que se encuentra generalmente en suelos con elevado contenido de materia orgánica y humedad. De las hojas se extrae aceite esencial con acción insecticida, fungicida y bactericida, con una amplia utilización en el sector agrario y medicinal. El objetivo del trabajo fue caracterizar el limbo de P. aduncum. Se efectuó la caracterización anatómica e histoquímica de la sección transversal y la caracterización anatómica de la sección paradérmica apical, mediana y basal del limbo. Para ello las hojas fueron preparadas con las técnicas tradicionales de microscopía de luz y microscopía electrónica. El mesófilo es dorsiventral con capas subcelulares en ambas epidermis. En la epidermis y las capas subcelulares sólo se encontró la presencia de proteínas totales. En el parénquima en empalizada y en el parénquima esponjoso fueron observados almidón, lípidos totales e insaturados. En el parénquima fundamental fueron encontrados almidón, proteína, lípidos totales, ortodihidroxifenoles y terpenoides con grupo carbonilo. Están presentes idioblastos unicelulares en las capas subcelulares de la epidermis del mesófilo hipoestomático, los estomas son tetracíticos y salientes. En los idioblastos oleíferos fue detectada la presencia de lípidos totales, ortodihidroxifenoles, lactonas sesquiterpénicas y terpenoides con grupo carbonilo. Fueron observados tricomas tectores unicelulares cortos, de extremos agudos, pluricelulares de extremos agudos y capitados, y tricomas glandulares saculares y glándulas perladas. En la porción basal de los tricomas tectores fueron encontradas proteínas totales y en los tricomas saculares, proteína, lípidos totales y ortodihidroxifenoles.

O objetivo deste trabalho foi verificar a influência de diferentes idades e tipos de estacas na produção de mudas de Mentha arvensis L. Foram avaliados quatro diferentes tipos de estacas: estacas apicais retiradas da parte aérea; estacas retiradas da parte aérea mediana; estacas retiradas da ponteira do estolão e estacas retiradas da parte mediana dos estolões. Os diferentes tipos de estaca foram avaliadas com 25 e 40 dias de cultivo. Foram empregadas estacas com 4-5cm de comprimento, enterradas 2/3 no substrato comercial Plantmax®. Foram avaliados, nos dois períodos de enraizamento (25 e 40 dias) nos diferentes tipos de estaca na bandeja, a altura, o número de brotações, a biomassa seca da parte aérea e das raízes e a porcentagem de mortalidade. As estacas, após os períodos de enraizamento foram transplantadas para canteiro e vasos. Foi também determinada a porcentagem de mortalidade e a biomassa seca da parte aérea, das raízes e estolões, após um cultivo por 30 dias. Os resultados mostraram que as estacas apicais da parte aérea aos 25 dias e aos 40 dias após o plantio na bandeja apresentaram maior enraizamento e desenvolvimento da parte aérea e baixa porcentagem de mortalidade. Aos 25 dias, as estacas apicais da parte aérea se desenvolveram estando as mudas aptas ao transplantio para o campo. Aos 30 dias após o transplantio, as estacas apicais da parte aérea apresentaram maior crescimento, exceto para biomassa seca dos estolões.

The objective of this research was to verify the influence of different age and types of cuttings in the production of scion of Mentha arvensis L. Four different types of cuttings were evaluated: apical and medium cuttings (from aerial part); tip and medium cuttings (from rhizome part). The different types of cuttings were evaluated at 25 and 40 days of age. The cuttings used had 4-5cm long and covered with Plantmax® substrate to a depth of 2/3. Two rooting periods (25 and 40 days) from the different types of cuttings were evaluated: height, shoots number, aerial and roots dry biomass and percentage of mortality. The cuttings after the rooting period were transplanted to bed and pots. The mortality and the aerial part, roots and rhizome dry biomass were determined 30 days after being cultivated. The results showed that apical cuttings from aerial part at 25 and 40 days after being planted in trays had higher rooting, aerial part development and low mortality. At 25 days the aerial part developed and the scion was ready to be transplanted to field. Thirty days after transplanted apical cuttings from aerial part showed a higher growth, except for rhizome dry biomass.