U.S. Department of Agriculture: Agricultural Research Service, Lincoln, Nebraska
Date of this Version
3-2017
Citation
ANNUAL REPORT OF THE BEAN IMPROVEMENT COOPERATIVE, No. 60, March 2017. Published by USDA.
Abstract
INTRODUCTION: High levels of trace elements are characteristic of Brazilian soils. However, the presence of these trace elements may increase with incorrect application of agricultural inputs, industrial waste, agricultural chemicals, and mining waste. Many trace elements have known biological functions. Neglecting the permissible limits of these trace elements in the soil can lead to plant ecological and nutritional imbalances. Chromium (Cr VI) causes oxidative and mutagenic changes to plant cells, therefore, can be a highly toxic threat to both plants and the animals feeding on these plants. The harmful effects of Cr VI are greater than other forms of this element due to its mobility, capacity to penetrate plant tissue, oxidative and mutagenic capacity, and ability to inhibit soil biochemical processes. Even at low concentrations Cr VI can be toxic and cause inhibition of germination, limit root and shoot growth, and cause foliar chlorosis. When absorbed by plants, the accumulation of Cr VI is concentrated predominantly in the roots, with proportional translocation to the shoots. Due to its detrimental behavior in soil and ability to be absorbed by plants in the form of chromate, the investigative study of Cr VI is imperative. The effects of Cr VI on plants can be observed and investigated in the common bean.
This study aims to evaluate the emergence and initial development of Phaseolus vulgaris cv. BRSMG Madrepérola grown on soil contaminated with Cr VI.
Comments
U.S. government work.