Rural communities have accumulated knowledge about survival techniques in the midst of diffi culties, such as ecological, economic or social, and one of the transformation spaces and extraction of resources to these communities is the natural vegetation and homegarden. The aim of this study was to list medicinal plants and characterize the use of these plants at the Sítio do Gois, Apodi-RN, Brazil. Openinterview, semi-structured and guided tours by local experts (fi eld guide person, foresters, herb doctors, healers, farmers, housewives) were realized. Medicinal plants are distributed in 34 families, 46 genera and 52 species. The family with the greatest number of individuals was Lamiaceae (seven species). The species most mentioned were Amburana cearensis (77%) followed by 69% de citation of Myracrodruon urundeuva, Sideroxylon obtusifolium, Ximenia americana. Informants are aware of specifi c uses of native medicinal plants of the caatinga and homegardens. The most common preparations are teas and syrups, used part is the leaf and stem bark and great number of citations for disorders of the digestive and respiratory systems. The most important species with greater use agreement were A. cearensis M. urundeuva, S. obtusifolium and X. americana they deserve pharmacological studies and validation.

Propôs-se, neste trabalho, avaliar o desempenho agronômico da cebola em diferentes densidades de plantio, em Mossoró, RN. O delineamento experimental utilizado foi em blocos casualizados completos em esquema fatorial 2 x 5, com quatro repetições. Os tratamentos consistiram da combinação de duas cultivares de cebola (Vale Ouro IPA 11 e Bella Dura) e cinco densidades de plantio (80, 120, 160, 200 e 240 plantas m-2). As características avaliadas foram: classificação dos bulbos em função do diâmetro transversal; produtividade total, comercial e não comercial; massa média dos bulbos; massa seca dos bulbos e relação do formato de bulbos. A cultivar mais produtiva foi a IPA 11, com produtividade total de 26,76 t ha-1. A densidade que proporcionou maior produtividade total (30,48 t ha-1) foi a de 204 plantas m-2 e comercial (24,74 t ha-1) foi a de 161 plantas m-2. O incremento da densidade reduziu a massa média e seca de bulbo, percentagem de bulbos das classes 2 e 3, mas aumentou a produtividade não comercial, percentagem de bulbos classe 1 (refugo) e relação de formato de bulbo. A cultivar Vale Ouro IPA 11 foi superior ao híbrido Bella Dura com relação à produtividade total de bulbos, massa média de bulbos comerciais e relação de formato, independentemente da densidade de plantio.

With the need of a large-scale seedling production, the application of purple nutsedge extract may represent a promising alternative, contributing to the fruit species propagation. The aim of this study was to evaluate the effects of nutsedge extract on the survival rate, rooting and biomass of acerola’s mini-cuttings. The experimental design was a completely randomized block, with a 5x2 factorial arrangement (five aqueous purple nutsedge extracts of nutsedge (0%, 25%, 50%, 75% and 100%) and two types of mini-cuttings, a pair of entire leaves and a pair of half leaves) resulting in 10 treatments with 5 repetitions and 8 mini-cuttings per repetition. The evaluations were performed at 75 days after planting, when destructive analysis were carried out for morphological characteristics. The evaluates variables were mini-cuttings survival percentage, percentage of mini-cuttings with sprouts, percentage of mini-cuttings with callus, percentage of minicuttings with roots, root system length, shoot dry mass, root dry mass, total dry biomass and the ratio between shoot and root dry mass. For the experiment conditions, the nutsedge extract positively influenced the survival percentage and percentage of sprouting of acerola’s mini-cuttings, however the extract application did not influence the mini-cuttings biomass of, being the results observed with or without the cut on mini-cuttings leaves.

A taxonomic treatment of the Boraginales of Rio Grande do Norte, Brazil, is presented. Twenty-one species in five genera and two families have been recorded: Cordiaceae, with two genera (Cordia (seven species) and Varronia (four)) and Heliotropiaceae, with three genera (Euploca (five), Heliotropium (two) and Myriopus (three)). Cordia oncocalyx and Euploca paradoxa represents new occurrence records for the flora of Rio Grande do Norte, the latter being found for the first time also in the littoral vegetation. Keys to the families and respective genera and species, descriptions and illustrations, as well as distribution and habitat data are included.

This paper explores promising teaching practices for teaching linguistically and culturally diverse international students by identifying the teaching practices that have high levels of international student satisfaction and student perceptions of learning. Data were collected through an online survey at a mid-sized Canadian public comprehensive university. Variability of student satisfaction by individual student characteristics (e.g., level of study, year of study, age, gender, field of study, country of origin, length of time studying outside country of origin, parents' educational level, and study location) is presented. Recommendations for professional practice are discussed along with potential areas for further research.2.1.1. Gender. D'Allegro, and Dickinson [10] stated that there are differences in the way male and female students absorb new content. They found that male and female students have preferences for doing research and testing out