RESUMO:Brosimum gaudichaudii Tréc. (Moraceae), espécie típica do cerrado, popularmente conhecida como algodãozinho e mama-cadela, é muito apreciada pelo sabor adocicado dos frutos. É planta medicinal utilizada para o tratamento do vitiligo. O objetivo deste trabalho foi avaliar as características biométricas das sementes, a emergência e o desenvolvimento de plântulas provenientes de diferentes locais do cerrado mato-grossense. A coleta das sementes foi realizada aleatoriamente e o delineamento foi inteiramente casualizado com três tratamentos (procedência das sementes) e quatro repetições. As características biométricas das sementes, de cada procedência, foram medidas com paquímetro digital. As sementes foram distribuídas em substrato de areia, em caixas de plástico, a profundidade de 2 cm e colocadas a 26ºC e 40% de umidade relativa por 42 dias. Foram consideradas como germinadas as sementes que formaram plântulas com 2 cm de altura. As variáveis observadas foram: dimensão das sementes, massa de 100 sementes, porcentagem e tempo médio de emergência de plântulas, altura, diâmetro basal e número de folhas das plântulas e o nível de coloração do caule (verde, róseo, avermelhado e vermelho). Apesar de não ter havido diferença na porcentagem de emergência de plântulas de Brosimum gaudichaudii das três procedências foram verificadas diferenças significativas tanto para o tempo médio de emergência quanto para o desenvolvimento de plântulas de diferentes procedências. Palavras-chave: Moraceae, germinação, biometria, plantas medicinais, cerradoABSTRACT: Biometric characteristics and emergence of Brosimum gaudichaudii Tréc. seedlings from different parts of "Cerrado mato-grossense". Brosimum gaudichaudii Tréc. (Moraceae), a typical Cerrado species popularly known as "algodãozinho" and "mama-cadela", is greatly appreciated for the sweet flavor of its fruits. It is a medicinal plant used to treat vitiligo. The aim of this work was to evaluate the biometric characteristics of seeds and the emergence and development of seedlings from different parts of "cerrado mato-grossense". Seeds were randomly collected and the experimental design was completely randomized with three treatments (seed provenances) and four replicates. Seed biometric characteristics were measured with a digital pachymeter. The seeds were distributed into sand substrate in plastic boxes at 2 cm depth and stored at 26ºC and 40% relative humidity for 42 days. Seeds were considered germinated when they formed 2 cm-tall seedlings. The following characteristics were analyzed: seed dimensions, 100-seed weight, seedling emergence percentage and mean time, height, basal diameter, leaf number and stem color degree (green, pinkish, reddish and red). Although there was no difference in the emergence percentage of Brosimum gaudichaudii from the three provenances, significant differences were verified for both emergence mean time and development of seedlings from distinct provenances.
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