Effect of วิตามินซีand ไคโตซาน Film Coating on Storability of Sunflower Seeds

Abstract

Sunflower seeds have a high fat content that causes rapid seed deterioration. The objective of this experiment was to determine the effects of coating of sunflower seeds with polymer (Flare-2, Centor Thai) mixing with  vitamin C and chitosan at the concentrations of 0 (control) 2 4 and 6 ppm (120 ml/100g seed). The coated seeds  were stored in plastic bag for 6 months at 10 ºC. The results showed that the seed germination of coated seeds for all treatments after 4 months of storage was not significantly different from the initial value. However, after 5 and 6 months of storage, the control treatment had the lowest germination percentage of 76% and it was lower than the coated seeds with polymer mixing with vitamin C and chitosan treatments (87-95%). Seed vigor of coated seeds decreased with the longer storage time in every treatment. Germination index (GI) and seedling growth (shoot and root length) of all treatments decreased by the longer storage time. In conclusion, the polymer coated sunflower seeds mixing with vitamin C and chitosan extended storability for 6 months without affecting the germination percentage comparing with the initial value and higher than that of the control treatment