Otro
Efeito do estresse hídrico e salino na germinação e vigor de sementes de maxixe
Registro en:
Interciencia. Caracas: Interciencia, v. 39, n. 5, p. 333-337, 2014.
0378-1844
WOS:000337860200007
Autor
Alves, Charline Zaratin
Santos Lourenco, Flavia Mendes dos
Silva, Josue Bispo da
Benetoli da Silva, Tiago Roque
Resumen
The objective of this work was to evaluate the germination and vigor of two lots of gherkin seeds in different osmotic potentials using polyethylene glycol (PEG 6000) and sodium chloride (NaCl). Seeds of the 'North' cultivar were sown in germitest paper moistened in solutions of polyethylene glycol and sodium chloride in osmotic potentials of 0, -0.3, -0.6 and -0.9MPa. The experimental design was completely randomized in a factorial 2x4 design (solutions x osmotic potential), with four replications. Seed vigor was evaluated by the germination test, first germination count, length and dry weight of root and hypocotyl. It is concluded that the reduction in osmotic potential from -0.3MPa induced by PEG 6000 and NaCl reduces the germination and vigor of gherkin's seeds. The osmotic stress induced by PEG 6000 produced more severe effects than saline in physiological quality of gherkin's seeds.