Metodologia para condução do teste de germinação em sementes de chia (Salvia hispanica L.)

Abstract

Salvia hispanica belongs to the Lamiaceae family, is native to Mexico and popularly known as "chia". The fruits wrongly called seeds, have many medicinal, culinary, artistic and religious uses that have made important this crop, especially in the nutritional aspect due to the high content of fatty acids like omega-3. Currently there are no analysis methodologies to evaluate the germination of S. hispanica seeds in the ISTA (International Seed Testing Association) rules or RAS (Regras para Análise de Sementes) rules, being used as a reference other species of the same genus. The objective of this study was to establish methodological standards for conducting the germination test in S. hispanica seed. Seven lots of chia seeds were used that were subjected to six different temperatures (20 ° C, 25 ° C, 30 ° C; 20-30 ° C; 15-35ºC, 20-35ºC) in the presence and absence of light. Seeding was made in gerbox boxes, using the substrate on paper. Daily counts were made to determine the appropriate times to perform the evaluations. Germination, First count of germination, IVG, GV, CVG and Emergency were evaluated. The results showed that the seeds of S. hispanica L. feature light the indifferent behavior , the counts in the germination test should be conducted at four and seven days after sowing and the most suitable temperature for performing the germination test are constant 20 ° C and 20-30 ° C alternating.