QUALIDADE FISIOLÓGICA E TEOR DO ÓLEO BRUTO DE SEMENTES DE Helianthus annus L. DURANTE O ARMAZENAMENTO

Abstract

The present work was conducted at the Laboratory of Postharvest of Plant Products of the Federal Institute of Goiano - Rio Verde Campus, with the objective of evaluating the physiological potential and crude oil content extracted from sunflower seeds during storage. Wet seed lots of sany 66 were used for the analyses, manually harvested with water content of 7.59% wet basis and stored in kraft paper packaging under different environmental conditions (natural environment 29.72 ºC ± 2.28 and air-conditioned environment 22.95 ºC ± 4.25), for 240 days. Every 60 days (0, 60, 120, 180 and 240) the seed quality and crude oil content of the sunflower (water content, germination, germination speed index, normal seedlings, average germination time, emergence, emergence speed index and oil content) were evaluated. The experiment was conducted in a completely randomized design in a factorial scheme 2 × 5, being two environments and 5 storage times, in four replications. The data were submitted to variance analysis and the means compared by the Tukey test at the level of 5% significance. Regression analysis was performed for the quantitative factor (storage time). Based on the results obtained, it can be concluded that only storage time influenced the quality of sunflower seeds. The different environment conditions influenced only the emergency test, not influencing the other characteristics evaluated.