Physiological quality of kale seeds as a function of hydroconditioning in different periods and concentrations of zinc sulfate
Abstract
The immersion of seeds in a nutritive solution allows the supply of nutrients, the control of the speed of imbibition and the initiation of metabolic processes. The objective of this study was to evaluate the physiological quality of kale seeds, after soaking the seeds in solutions containing zinc. The design used was completely randomized in a 4 x 5 factorial scheme, with four repetitions, with 4 periods of imbibition (6; 12; 18 and 24 h) and 5 zinc concentrations (0; 2; 4; 6 and 8 mL). The variables analyzed were: seed imbibition, primary root protrusion speed index, normal seedlings, abnormal seedlings, seedling length and seedling dry mass. The longest soaking periods had a negative influence on the physiological parameters of kale seeds. Hydroconditioning, coupled with the highest concentrations of the commercial product based on zinc sulfate, negatively interfered with seed germination and seedling length.
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