Vigor tests in assessing the quality of signal grass seeds

• Autor(a) principal: Melo, Paulo Alexandre Fernandes Rodrigues de
• Data de Publicação: 2017
• Outros Autores: Jeromini, Tatiane Sanches, Affonso, Carlos Eduardo, Alves, Edna Ursulino, Martins, Cibele Chalita
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Semina. Ciências Agrárias (Online)
• Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/28594
• topic: Brachiaria brizantha; Germination; Forrage grass; Vigor tests.; Brachiaria brizantha; Germinação; Gramíneas forrageiras; Testes de vigor.

The correct assessment of the physiological quality of seed lots is necessary for the quality control program of companies. For such purpose, tests that detect differences in the physiological potential of seed lots and that meet the minimum market requirements. Thus, the study was conducted towards assessing the efficiency of laboratory tests in differentiating the quality of Brachiaria brizantha cv. Xaraés seed lots. Seeds from nine lots were assessed regarding water content, germination, first germination count, electrical conductivity and seedling emergence in sand in the laboratory (normal seedlings, first count and germination rate index), and the results were compared with those from the seedling emergence test conducted in the field. The experimental design used was completely randomized, with four replicates, and the Pearson correlation coefficient between the values from the germination, vigor and field seedling emergence tests was determined. The germination and seedling emergence in sand tests and the seedling emergence rate index efficiently assess the physiological quality of Brachiaria brizantha cv. Xaraés seed lots, providing data similar to those from seedling emergence in the field.