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- W2182380768 abstract "RESUMEN The La Ramada district and the Bogota River are the principal water resources used for horticultural crop production on the Bogota Plateau, which contain channel pollutant materials, including heavy metals due to domestic and industrial activities on the Plateau. These materials have effects on crop production in this zone. The present research, under laboratory conditions, aimed to evaluate the effect of three concentrations (25, 35 and 50 µM L -1 ) of cadmium (Cd) and chromium (Cr) on imbibition, seed germination and root elongation in lettuce (Lactuca sativa var. Batavia), Swiss chard (Beta vulgaris var. cicla ‘White Ribbed’), and spinach (Spinacia oleracea Hib. 424), three species widely cultivated on the Plateau. The three species used for evaluation showed a differential susceptibility response to Cd and Cr. In lettuce, fresh weight increase (imbibition) was lower with all Cd concentrations at the last day of observation and at 25 µM L -1 of Cd in Swiss chard. Cadmium reduced seed germination by up to 46%, 97% and 8% in Swiss chard, lettuce and spinach, respectively. Also, root elongation decreased in Cd treatments by up to 57%, 89% and 56%, for Swiss chard, lettuce and spinach, respectively. Chromium, which showed fewer negative effects, decreased germination by up to 29% in Swiss chard, 6% in lettuce and 34% in spinach, as compared to the control. La produccion horticola en la Sabana de Bogota tiene como principales fuentes hidricas al distrito de riego La Ramada y al rio Bogota, el cual lleva en su cauce materiales contaminantes como metales pesados, provenientes de las diferentes actividades industriales y domesticas de la Sabana. Estos contaminantes afectan la produccion de cultivos en esta zona. En el presente estudio, bajo condiciones de laboratorio, se evaluo el efecto del cadmio (Cd) y cromo (Cr) en tres concentraciones (25, 35 y 50 µM L -1 ), sobre la imbibicion, germinacion y elongacion radical de lechuga (Lactuca sativa var. Batavia), acelga (Beta vulgaris var. cicla ‘White Ribbed’) y espinaca (Spinacia oleracea hibrida 424), tres especies que son ampliamente cultivadas en la zona. Se encontro una susceptibilidad diferente a los dos compuestos metalicos en cada especie. En lechuga, en el ultimo dia de la observacion, las tres soluciones de Cd disminuyeron el aumento del peso fresco de las semillas (imbibicion), mientras este ocurrio en acelga solamente a 25 µM L -1 de Cd. Cadmio afecto la germinacion en 46%, 97% y 8% en acelga, lechuga y espinaca, respectivamente; tambien, este metal redujo la elongacion radical hasta un 57%, 89% y 56% en las tres especies, respectivamente. El Cr no mostro efectos tan negativos, pero redujo la germinacion de acelga (29%), lechuga (6%) y espinaca (34%), comparado al control." @default.
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- W2182380768 date "2013-01-01" @default.
- W2182380768 modified "2023-09-25" @default.
- W2182380768 title "Cadmium and chromium effects on seed germination and root elongation in lettuce, spinach and Swiss chard Efecto del cadmio y cromo sobre la germinación y elongación radical de lechuga, espinaca y acelga" @default.
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