Accelerated aging test to evaluate the quality of crambe (Crambe abyssinica Hochst - Brassicaceae) seed physiology
Teixeira do Amaral,José Augusto
The present study aimed to evaluate the efficiency of the accelerated aging test to determination of the physiological potential of the Crambe abyssinica Hochst seeds, from two harvests (2009 and 2010). Were evaluated: water content, germination and vigor by germination speed index, accelerated aging in temperatures of 41, 43 and 45 °C for 24, 48, 72 and 96 hours, fresh and dry mass. The experiment was conducted in a 2x3x5 factorial (batches x temperature x exposure time), in a completely randomized design, with four replicates of 25 seeds. The fresh and dry mass were not effective for distinguish the physiological quality of Crambe abyssinica seeds. The accelerated aging test influences, similarly, the percentage of germination and vigor, with greater sensitivity when the seeds treated with temperatures of 41 or 43 °C, for 72 h, and evidenced promising role to a stratification of the physiological quality of crambe seeds batches with similar germination.