A peliculização deve ser feita antes ou após a embebição de sementes de tomate com paclobutrazol?
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Data
2015
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Resumo
The paclobutrazol increases resistance to abiotic and biotic stresses favoring the establishment of
seedlings in the field. When the airing of this regulator is done through seed treatment, there are negative
effects to the physiological quality of seeds. The film coating can assist in fixing of paclobutrazol in the
integument of the seeds, though nobody knows for sure what is the best way of combination between the
coating polymer and paclobutrazol. Thus, the objective of determining whether the film coating should be
made before or after the soaking of tomato seeds (grow Giant Kada) with paclobutrazol based on potential
physiological implications of seed and seedling production. It was the completely randomized design with
six replicates. The treatments consisted of: soaking the seed in water; soaking the seed in paclobutrazol
solution (50 mg L -1 ), film coating of seeds before or after soaking in paclobutrazol. The soaking of seeds
with paclobutrazol, regardless of the time of film coating, has harmed the speed of germination and seedling
emergence. There was a reduction of 17% on the first count in the germination test, 11% on seedling
emergence and 57% in the index of seedling emergency speed, relative to the control. It is concluded that the
height reduction promotes paclobutrazol seedlings but harms the physiological potential of seeds. The film
coating as a vehicle for fixation of paclobutrazol is not indicated due to maintenance of reduced seedling
emergence.
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Germinação, Solanum lycopersicum L., Regulador de crescimento, Vigor, Germination, Solanum lycopersicum L., Growth regulators
Citação
MELO, Aniela Pilar Campos de; SELEGUINI, Alexsander; VELOSO, Valquiria da Rocha Santos. A peliculização deve ser feita antes ou após a embebição de sementes de tomate com paclobutrazol? Revista Agrarian, Dourados, v. 8, n. 28, p. 210-215, 2015.