%0 Journal Article
%T Incidence of seedborne fungi on pink trumpet tree (Tabebuia impetiginosa) and yellow poui (Tabebuia ochracea) in Roraima = Incid那ncia de fungos associados a sementes de ip那-rosa (Tabebuia impetiginosa) e ip那-amarelo (Tabebuia ochracea) em Roraima
%A Ataiza de Andrade Sousa
%A C芍ssia Rejane do Nascimento
%A Auriane da Conceiˋˋo Dutra da Silva
%A Rosianne Nara Thom谷 Barbosa
%J Agro@mbiente On-line
%D 2012
%I Universidade Federal de Roraima
%X The objective of this study was to identify and quantify fungi associated with seeds ipe-pink (Tabebuia impetiginosa), yellow-ipe (Tabebuia ochracea) and evaluate the effects of aseptic seed germination and seed seeding. The experiment was done at the Laboratory of Plant Science Center of Agrarian Sciences, Federal University of Roraima. Samples of ip那 yellow and pink ipe were collected and extracted from fruits harvested in the urban area of the city of Boa Vista - RR. Each sample was divided into two sub-samples, treated and untreated, and were then submitted to germination and health analyses. The filter paper method was used for the health test where contaminated seeds were analyzed for the detection and identification of fungi. For the germination test method was also the filter paper, obtained the germination rate, rate of plants with lesions, number of seeds germinated and the rate of non-germinated seeds that had fungus. The results were subjected to variance analysis and when significant, means were compared by the Tukey test at 5% probability. The experimental design was completely randomized with four replications of 50 seeds for each treatment. Asepsis with 70% alcohol for a minute then with sodium hypochlorite (NaClO) to 2% for three minutes was positive for the elimination of fungi on seeds of ipe-yellow and ipe-pink, it favored germination and decreases the rate of seedlings with lesions. = Objetivou-se com o presente trabalho identificar e quantificar os fungos associados 角s sementes de ip那-rosa (Tabebuia impetiginosa), ip那-amarelo (Tabebuia ochracea) e avaliar o efeito da assepsia das sementes na germina  o e na plantula. O Experimento foi realizado no Laborat車rio de Fitotecnia do Centro de Ci那ncias Agr芍rias da Universidade Federal de Roraima. Foram coletadas amostras de sementes de ip那-amarelo e ip那-rosa extra赤das de frutos colhidos na 芍rea urbana do Munic赤pio de Boa Vista - RR. Cada amostragem foi dividida em duas sub-amostras, tratada e n o tratada, as quais foram submetidas aos testes de germina  o e sanidade. O m谷todo utilizado para o teste de sanidade foi o papel de filtro, sendo as sementes contaminadas analisadas para a detec  o e identifica  o dos fungos associados 角s mesmas. Para o teste de germina  o o m谷todo tamb谷m foi o papel de filtro, obteve-se o percentual de germina  o, percentual de plantulas com les es, n迆mero de sementes n o germinadas e percentual de sementes n o germinadas que apresentaram fungos. Os resultados foram submetidos a an芍lise de variancia e, quando significativa, as m谷dias foram comparadas pelo teste de
%K Aspergillus
%K Curvularia
%K Fusarium
%K Seed pathology. = Aspergillus
%K Curvularia
%K Fusarium
%K Patologia de sementes.
%U http://ufrr.br/revista/index.php/agroambiente/article/view/622/657