Neste trabalho, a atividade alelopática de Schinus terebinthifolius Raddi, a aroeira-vermelha, foi avaliada utilizando-se Lactuca sativa L., a alface, como planta alvo. Os bioensaios foram conduzidos em laboratório com extratos aquosos preparados a partir de folhas e frutos, resultando nos seguintes tratamentos: folha 5% (Fo5), folha 10% (Fo10), folha 20% (Fo20), fruto 5% (Fr5), fruto 10% (Fr10), fruto 20% (Fr20) e água destilada (Controle). A germinação foi acompanhada por seis dias e os resultados expressos em termos de Porcentagem de Germinação (PG), Índice de Velocidade de Germinação (IVG) e Biomassa das Plântulas (BP). Os dados foram submetidos à análise de variância (One-way ANOVA) seguida pelo teste de Tukey (p<0,05). Ápices radiculares foram processados em glicolmetacrilato para análise histológica qualitativa ao microscópio óptico. A germinação foi totalmente inibida pelos tratamentos de maior concentração (Fo20 e Fr20) e todas as variáveis analisadas apresentaram diferenças significativas com relação ao controle, exceto PG e BP no tratamento Fr5, indicando forte efeito alelopático da aroeira-vermelha. Necrose do ápice radicular e alterações celulares nas raízes submetidas aos extratos também foram evidenciadas. Os resultados sugerem que S. terebinthifolius tem potencial para ser utilizada como fonte de compostos bioativos no manejo de ervas daninhas em agroecossistemas.
The Cerrado is one of the six Brazilian biomes and offers a wide variety of edible fruit species. This article is the result of an outreach program entitled Cagaita and Pequi, Economic and Social Importance of the Population of Sete Lagoas, created in 2014. It aimed to take information and build knowledge in the community about the possibility that the fruits of the Cerrado present, especially pequi and cagaita. He sought to contribute to raising awareness of the preservation of the environment and the inclusion of low-income local people, who can use the fruits as alternative food and generate income, thereby protecting and ensuring the survival of future generations and countless families that use the fruits. Still, he tried to contribute to the training and education of the students of the courses of Food Engineering and Bachelor's Degree in Interdisciplinary Biosystems UFSJ. As interventions were used methodology of work in Sete Lagoas and the region, with the support of leaflets, flyers and posters.
The Cerrado biome, predominant in the region of Sete Lagoas is marked by fruit species of the local flora, such as: Araticum, Cagaita, Jatobá, Mangaba, Pequi, among others that are not always known by the community. Environmental education is an important tool for awareness and preservation of the local biome. The extension program aims to bring the community knowledge of the biome and the typical fruit species of the region that are not known and recognized. Inducing a new look and expanding knowledge among students in order to highlight the biome and its characteristics in a playful and didactic way. The program was successful in interventions and achieved satisfactory results in relation to students' perception of classroom work, extolling the biome in which they live, generating new multipliers. The work done in an interdisciplinary way achieved an increase in the percentage of correct answers compared to the numbers obtained before the interventions.
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