The present study evaluates the fruit yield and antioxidant activity of pepper genotypes as a function of nitrogen doses. The experiment was conducted in a greenhouse with seven pepper genotypes: two C. annuum (116 and 163), two C. chinense (39 and 118), two C. frutescens (17 and 113), and one C. praetermissum (141), and 11 nitrogen doses (0, 1, 2, 4, 8, 16, 32, 64, 128, 256 and 512 N mg dm-3). Productive parameters were evaluated, and antioxidant compounds were determined by spectrophotometric methods. Genotypes 116 and 163 showed a higher fruit fresh mass, and genotype 141 produced the highest number of fruits per plant. Genotypes 141 and 163 were the earliest. The highest antioxidant activity was obtained in the extracts of fruits of genotype 113. Nitrogen fertilization did not affect the antioxidant content of fruits. The pepper genotypes of the present study have comparable bioactive compound contents and antioxidant activity. Therefore, they are promising genotypes for the vegetable production sector, with potential for industrial and pharmacological use.

This work is a scientometric analysis of articles published in journals related to the subject “Dipteryx alata, Baru and Brazilian savanna” in its main area of occurrence, the Brazilian savanna biome. The proposal was to draw a scientometric profile related to the aforementioned topic, which is a key species with enormous potential for socio-environmental development, presenting the panorama of the state of knowledge and the main areas of research until the year 2021. A total of 205 articles that had baru as the focus of the study were found, having been published in 114 journals between 1988 and 2021. The area of biotechnology had the greatest representation, followed by ecology. In the area of biotechnology, research had different approaches, such as the nutritional part of the development of new products for the industry, highlighting the importance and plasticity for the use of the species, as a potential product for socio-environmental development, and for some communities, mainly those formed by small family units, it is an important element in complementing the source of income. Another important point of the species is its potential use for the recovery of degraded areas, due to its morphophysiological characteristics, which, in addition to helping in sustainable production and productivity, have a broad, complex and highly important ecological relationship to the Brazilian savanna ecosystem.

RESUMO A capacidade de adaptação fisiológica de uma espécie em locais de maior saturação hídrica contribui para a seletividade destas permitindo que algumas tenham vantagens sobre outras, a exemplo tem-se Calophyllum brasiliense Cambess (Calophyllaceae), que é capaz de se desenvolver em áreas alagáveis. Devido a tais características o presente estudo teve por objetivo realizar uma análise da distribuição espacial do guanandi (C. brasiliense) em áreas com pulso de inundação anual no Rio Guaporé, Município de Vila Bela da Santíssima Trindade-MT. As análises basearam-se em coletas de dados fitossociológicos em 1 ha, essa área foi dividida em 10 transectos de 10x100m (subdivididos em 10m parcelas de 10x10m cada) perpendiculares ao leito do rio, CAP (Circunferência à Altura do Peito, 1,30 m do solo) maior ou igual a 15 cm. A densidade da espécie no rio Guaporé foi de 43 ind.ha-1. A distribuição espacial apresentou um padrão aleatório com valores de Imst (0,49) com maior numero de indivíduos nas menores classes de tamanho, representando uma tendência de J invertido. As médias de CAP dos indivíduos estatisticamente não se diferem significativamente. A espécie encontra-se em um processo de regeneração, este resultado pode ser observado devido ao numero de indivíduos encontrados nas menores classes de tamanho. Tais fatores podem estar relacionados a ações antrópicas, observadas na área de estudo. PALAVRAS-CHAVE: áreas úmidas, regeneração, saturação hídrica.

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