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EnglishThe aim of this paper was to verify the viability of digital image processing in the measurement of rice seedling and its potential use as seed vigor test. The experiment took place at the Laboratorio Didatico de Analise de Sementes, located in Capao do Leao (RS), using seeds of eight rice cultivars: Irga 424, Puita Inta CL, BRS Esmeralda, SCS 116, Guri Inta CL, BRS Pampa, BRSGO Serra Dourada and Olimar. An image processing system (IPS) was used to measure length and area of shoot and root as an index of seed vigor in rice seeds. The experiment design was completely randomized with five replications. The evaluated variables were root and shoot length in graded ruler and by image, root and shoot area, and field emergence. Results obtained with the IPS were correlated with other quality tests though the Pearson tests. Determination of shoot length and leaf area of the seedlings obtained through IPS is effective for assessing the vigor of rice seeds. portuguesO objetivo neste trabalho foi verificar a viabilidade do processamento digital de imagens na mensuracao de plântulas de arroz e sua potencial utilizacao como teste de vigor em sementes. O experimento foi realizado no Laboratorio Didatico de Analise de Sementes, localizado no Capao do Leao (RS), utilizando sementes de oito cultivares de arroz: Irga 424, Puita Inta CL, BRS Esmeralda, SCS 116, Guri Inta CL, BRS Pampa, BRSGO Serra Dourada e Olimar. Uma ferramenta de processamento de imagens (FPI) foi utilizada para mensurar o comprimento e a area da parte aerea e de raizes de plântulas de arroz de modo a classificar as sementes em niveis de vigor. O delineamento experimental foi inteiramente casualizado com cinco repeticoes. As variaveis avaliadas foram comprimento de raiz e parte aerea em regua graduada e pela imagem, area de raiz e parte aerea e emergencia a campo. Os resultados obtidos com o FPI foram correlacionados com outros testes de qualidade por correlacao de Pearson. A determinacao do comprimento de parte aerea e area foliar de plântulas obtidos atraves do FPI e efetivo para avaliar o vigor de sementes de arroz.

Rice seeds vigor through image processing of seedlings