J. Phys. IV France 107 (2003) 653
Absorption of cadmium in bean cultivars variety black JamapaM.C.V. Ibarra1, R. Gomez2 and R.M. Arriaga3
1 Reforma Agraria, 65 Col Moctezuma, CP. 63180, Tepic, Nayarit, Mexico
2 Facultad de Agricultura, UAN km.8, Carr. Pto. Vallarta, Cd. de la Cultura A. Nervo, Tepic, Nayarit, Mexico
3 Universidad Autonoma de Nayarit, Centro Multidiscilinario de Investigacion Cientifica, Laboratorio de Suelos y Agua, Cd. de la Cultura Amado Nervo, CP. 6300, Tepic, Nayarit, Mexico
(4) The cadmium is highly toxic and for all biota in very small concentrations, these study was to know the limit of phitotoxicity and nutrition of cadmium in bean cultivars variety black Jamapa, and to measure absorption of cadmium in roots, stem, leaves and grain. The experiment was carried out in plots with bean of the black variety Jamapa, in greenhouse, 6 treatments in the water of irrigation with 0, 25, 50, 100 y 200 micromoles of cadmium, to quantification of cadmium in plant, is carried out with ICP previous acid digest (I) method D4638-86 of ASTM 1990. Was carried out analysis of variation and results indicate that, there were been significant for the variables : number of leaves, foliate area, dry weight from root, height of plant; the threshold of toxicity for the plant in the condition that it was carried out the experiment were 100 - 200 micromoles of cadmium applied in water of irrigation weekly, the visual symptom were: yellow of leaves, morphologic changes in leaves showed leaves bi-foliate and tetra-foliate in treatments upper of 100 micromoles of cadmium.
© EDP Sciences 2003