Armazenamento de sementes de cebola e cenoura em diferentes tempos e embalagens

Abstract

From seed to food, family farming is of great importance in ensuring the quantity and quality of production. For the southern region, the production of vegetables and seeds of onion and carrot vegetables are mainly of a cultural character, passed on from generation to generation. To provide subsidies and provide family farmers with the autonomy to be able to store their seeds without significant quality losses, the present study aimed to evaluate the storage potential of onion and carrot seeds stored in different packaging and environments. Impermeable and permeable packaging were tested under the following conditions: uncontrolled environment, cold room at 15 ° C (± 2 ° C) between 40 and 50% RH and cooler at 5 ° C, during 0, 60, 120, 180, 240 and 300 days, being evaluated the water content, germination, accelerated aging, emergence and emergency speed in a greenhouse. The experiment was conducted in a completely randomized design with four replications in a three factorial scheme. Initially, onion seeds presented average germination of 92% and water content of 6.5% and carrot seeds presented average germination of 77% and water content of 6.1%. The packaging and environments used allowed changes in water content, and the seeds stored in impermeable and permeable packaging, in a refrigerator those that suffered low water content oscillations. Aiming to provide applicable knowledge for family farming, among the treatments studied here, it was found that onion seeds with a moisture content of ± 6.5% can be stored in waterproof containers and in a refrigerator for up to 300 days, without reducing its physiological potential. For storage of carrot seeds, based on germination test, seeds with a moisture content of ± 6% can be stored in a refrigerator and controlled environment in a waterproof package for up to 300 days, it is necessary to evaluate the initial physiological quality of the seeds for later storage, since seeds with low initial vigor will have low storage potential.