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Different harvest times and physiological quality of coriander seeds/ Diferentes epocas de colheita e qualidade fisiologica de sementes de coentro

The season of harvest is one of the most important factors influencing seed quality. This study evaluated the effect of different harvesting times on the physiological quality of Coriandrum sativum L. seeds, cv. Palmeira. The experimental design was completely randomized, with six treatments (harves...

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Published in:Revista brasileira de engenharia agrĂ­cola e ambiental 2016-02, p.133
Main Authors: Alkimim, Emilly R, David, Andreia M.S. de S, Sousa, Tiago V, Rodrigues, Cleiton G, Amaro, Hugo T.R
Format: Article
Language:Spanish
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Summary:The season of harvest is one of the most important factors influencing seed quality. This study evaluated the effect of different harvesting times on the physiological quality of Coriandrum sativum L. seeds, cv. Palmeira. The experimental design was completely randomized, with six treatments (harvest times) and four replications. The experiment was conducted during the months of April to October 2010. The first moment to harvest seeds was carried out 15 days after full bloom, when approximately 50% of plants were in flowering phase. Other harvests (22, 29, 36, 43 and, 50 days after bloom) were carried out at 7 days intervals until the seeds reached 16.0% of moisture, which occurred in the 6th harvest. Immediately after each harvest, the seeds were analysed for water content, germination and vigor (first count, seedling emergence and emergence rate index). The harvest season most suitable for C. sativum seeds cv. Palmeira occurred between 46 and 50 days after flowering, when the seeds have the highest physiological quality and moisture content between 20 and 16%. Key words: Coriandrum sativum L. germination vigor water content A epoca de colheita e um dos fatores mais importantes que influencia a qualidade das sementes. Este estudo avaliou o efeito de diferentes epocas de colheita na qualidade fisiologica de sementes de Coriandrum sativum L., cv. Palmeira. O delineamento experimental foi inteiramente casualizado, com seis tratamentos (epocas de colheita) e quatro repetinoes. O experimento foi conduzido durante os meses de abril a outubro de 2010, em que a primeira epoca de colheita das sementes foi realizada aos 15 dias apos a floranao quando aproximadamente 50% das plantas apresentavam flores. As demais colheitas (22, 29, 36, 43 e 50 dias apos floranao) foram realizadas em intervalos de 7 dias ate as sementes atingirem aproximadamente 16% de umidade, o que ocorreu na 6a colheita. Imediatamente apos cada colheita as sementes foram avaliadas quanto ao teor de agua, germinacao e vigor (primeira contagem, emergencia de plantulas e indice de velocidade de emergencia). A epoca mais adequada para a colheita de sementes de C. sativum cv. Palmeira ocorreu entre 46 e 50 dias apos a floranao quando as sementes apresentaram a mais alta qualidade fisiologica e teor de umidade entre 20 e 16%. Palavras-chave: Coriandrum sativum L. germinacao vigor teor de agua
ISSN:1415-4366
DOI:10.1590/1807-1929/agriambi.v20n2p133-137