ABSTRACT
RESUMO O funcho (Foeniculum vulgare) é uma espécie medicinal nativa da Europa e amplamente cultivada em todo o Brasil. Possui propriedades carminativas, digestivas e diuréticas. Dada a grande importância dessa espécie no âmbito medicinal, objetivou-se com este trabalho avaliar o efeito de diferentes substratos e temperaturas na germinação de sementes de funcho. Os tratamentos foram compostos de duas temperaturas sendo uma constante de 20ºC e outra alternada de 25-30 °C e três diferentes substratos: papel mata borrão (Germitest), areia e vermiculita, em esquema fatorial 3 x 2, com 4 repetições de 25 sementes. Foi avaliado o índice de velocidade de germinação (IVG), porcentagem de germinação (PG), comprimento da radícula (CR), massa fresca (MF) e seca (MS) de plântulas. A temperatura de 20 ºC proporcionou maiores IVG, porcentagens de germinação, comprimento de radícula e massa seca. A germinação de sementes de funcho não foi influenciada pelos diferentes substratos testados. Pelos resultados, conclui-se que a condição que permitiu maior porcentagem de germinação das sementes de funcho foi a temperatura de 20 °C atingindo 91% de germinação.
ABSTRACT Fennel (Foeniculum vulgare) is a medicinal plant native to Europe that is widely cultivated throughout Brazil. It has carminative, digestive, and diuretic properties. Given the great importance of this species in medicine, the objective of this study was to evaluate the effect of different substrates and temperature on the germination of fennel seeds. The treatments consisted of two temperatures – one a constant 20°C, and the other alternating from 25 to 30°C – and three different substrates: blotting paper (Germitest), sand, and vermiculite, in a 3 x 2 factorial with four replications of 25 seeds. The germination speed index (GSI), percentage of germination (PG), radicle length, and fresh (FM) and dry mass (DM) of seedlings were evaluated. The 20°C temperature resulted in higher GSI, germination percentage, root length and dry mass. The fennel seed germination was not influenced by the different substrates tested. From the results, we concluded that the condition that allowed greatest percentage of fennel seed germination temperature was 20°C, reaching 91% germination.
Subject(s)
Seeds/classification , Foeniculum sativum/analysis , Germination , Plants, Medicinal/classificationABSTRACT
AIM: This study aimed to evaluate the effect of a digital learning tool on undergraduate dental students' performance in detecting dental caries using ICDAS. METHODS: An experimental digital learning tool (DLT) was created using digital photographs of sound and carious teeth. Thirty-nine students were divided into three groups (n = 13) and each assessed 12 randomly allocated patients before and after learning strategies: G1, ICDAS e-learning program; G2, ICDAS e-learning program plus DLT; G3, no learning strategy. Students (n = 32) reassessed patients 2 weeks after training. RESULTS: Comparing before and after the learning strategies, any difference in the values of specificity and area under the ROC curve for all groups was found. Sensitivity was statistically significantly higher for G1 and G2. Comparing the groups, G2 showed a significant increase in sensitivity at the D2 and D3 thresholds. Spearman's correlations with the gold standard before and after the learning strategy were 0.60 and 0.61 for G1, 0.57 and 0.63 for G2, and 0.54 and 0.54 for G3, respectively. The Wilcoxon test showed a statistically significant difference between the values obtained before and after learning strategies for G1 and G2. CONCLUSIONS: Use of the DLT after the ICDAS e-learning program tended to increase the sensitivity of ICDAS used by undergraduate dental students. The DLT appeared to improve dental students' ability to use ICDAS.
