QUALIDADE FISIOLÓGICA DE SEMENTES DE Allium cepa EXPOSTAS A MIX DE CONTAMINANTES EM CONCENTRAÇÕES AMBIENTAIS RELEVANTES

Abstract

The use of Allium cepa to identify the potential for contaminants has already been carried out to studies in several regions with forms of standardization. The use of pesticides agricultural products, pharmaceuticals, industrial residues, among others, form a mix of contaminants from little-known effect on the environment. Thus, the objective of the research was to determine whether the exposure of seeds to water containing a mix of contaminants in environmental environments Predictive causes physiological damage in germination and early seedling development Allium cepa. The study was carried out with five treatments to moisten the substrate they are: distilled water (control), cytotoxic reagent (cyclophosphamide, 10 mg / mL); it's three recommends a mix of 15 contaminants (Mix Group 1x - 100%, Mix Group ½ x- dilution 50% of the mixture and Mix Group ¼ x- dilution will be 25% of the mixture). The experiment was conducted in a completely randomized design with four replications of 50 seeds of A. cepa. Germination, first germination count, germination speed and seedling root length. Exposure of seeds to water containing a mix of contaminants in predictive environmental environments causes damage physiological effects on germination and initial development of A. cepa seedlings.