Vigor tests to evaluate the physiological quality of corn seeds cv. 'Sertanejo'/ Testes de vigor para avaliar a qualidade fisiologica de sementes de milho cv. 'Sertanejo'

The vigor tests are intended to monitor the quality of seeds as it allows reliably distinguish lots of low and high vigor, providing additional information to the germination test. So in this study the objective was to identify the most efficient vigor tests on stratification of lots of corn seeds c...

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Veröffentlicht in:Ciência rural 2017-03, Vol.47 (3)
Hauptverfasser: Sena, Daniela Vieira dos Anjos, Alves, Edna Ursulino, de Medeiros, Dayana Silva
Format: Artikel
Sprache:eng
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Zusammenfassung:The vigor tests are intended to monitor the quality of seeds as it allows reliably distinguish lots of low and high vigor, providing additional information to the germination test. So in this study the objective was to identify the most efficient vigor tests on stratification of lots of corn seeds cv. 'Sertanejo'. The experiment was conducted at Laboratory of Seed Analysis at the Center of agricultural Science of the Universidade Federal da Paraiba, using samples from 20 seed lots in a completely randomized design. For characterization of the lots it was evaluated water content, germination and vigor (cold test, electrical conductivity, accelerated aging, seedling emergence in field and germination at low temperatures). The accelerated aging, electrical conductivity and field emergence of seedlings tests are the most efficient for classification of lots of corn seeds cv. 'Sertanejo' in levels of vigor, been the seeds of lot 1 the most vigorous. Key words: Zea mays L., viability, seed analysis. Os testes de vigor tem como finalidade monitorar a qualidade das sementes, pois permite distinguir com seguranca os lotes de baixo e alto vigor, fornecendo informacoes adicionais ao teste de germinacao. Assim, no presente trabalho, objetivou-se identificar os testes de vigor mais eficientes na estratificacao de lotes de sementes de milho cv. 'Sertanejo'. O experimento foi realizado no Laboratorio de Analise de Sementes do Centro de Ciencias Agrarias da Universidade Federal da Paraiba, utilizando amostras de 20 lotes de sementes, em delineamento inteiramente ao acaso. Para caracterizacao dos lotes foram avaliados o teor de agua, a germinacao e o vigor (teste de frio, condutividade eletrica, envelhecimento acelerado, emergencia de plantulas em campo e germinacao a baixa temperatura). Os testes de envelhecimento acelerado, condutividade eletrica e emergencia de plantulas em campo sao os mais eficientes para classificacao dos lotes de sementes de milho cv. 'Sertanejo', em niveis de vigor, sendo as sementes do lote 1 mais vigorosas. Palavras-chave: Zea mays L., viabilidade, analises de sementes.
ISSN:0103-8478
DOI:10.1590/0103-8478cr20150705