Morphophysiological effects on jambu plants exposed to cadmium: a multivariate approach
International Journal of Development Research
Morphophysiological effects on jambu plants exposed to cadmium: a multivariate approach
Received 20th November, 2021; Received in revised form 03rd December, 2021; Accepted 21st January, 2022; Published online 20th February, 2022
Copyright © 2022, Eder Silva de Oliveira et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The study has as objective an analysis of the cadmium (Cd) effects in Acmella Oleracea (L.) K. Jansen (jambu), a widely consumed vegetable in the Amazon region, used and distributed in many parts of the world. It was performed a systematic analysis of the plant, with creation of indicators composed by biometric variables, gas exchange and cadmium content. The results showed that low doses of Cd promoted significant increase in growth, mass gain, net assimilation of CO2, stomatal conductance and transpiration on jambu. On the other hand, high doses of Cd induce toxicity in the vegetable. The Cd content in the aerial part (edible) exceeds the maximum limit allowed by Brazilian legislation to leafy vegetables. The multivariate indicators allowed the determination of the optimal dose of 1.05 mg.L-1, where there was increase in growth, mass gain and gas exchange, and the threshold dose of 2.1 mg.L-1, where the jambu plants don't present toxic signs. As the fact that many cultivation areas are near to great urban centers, the exposition of the plants to Cd is maximized, needing to intensify the soil monitoring of cultivation areas.
