Abstract
Abstract Sunflower (Helianthus annuus L. ‘Mammoth’) and poplar (Populus × ‘Androscoggin’ H.) plants were grown in a medium containing one of five Cd concentrations, ranging from 0.13 to 13.20 μg·g−1 and watered with one of five simulated rain treatments (pH 3.2-5.2) to determine the effects of precipitation acidity on Cd mobilization and resulting effects on plant growth. Treatment rain acidity was insufficient to lower the medium solution pH to levels conducive to high Cd desorption. Plants accumulated < 1% of the total Cd applied (as CdCl2) for all Cd treatments. Root and foliar Cd concentrations increased with Cd treatment levels. Poplar accumulated proportionally more Cd in foliage than in roots for all treatments. Sunflower accumulated proportionally more Cd in leaves than in roots for the 0.29, 0.62, and 3.20 μg·g−1 Cd treatments and in roots for the 0.13 and 13.20 μg·g−1 Cd treatments. Cadmium treatments and Cd concentrations in the medium, roots, and foliage were not related to changes in plant dry weights, heights, or essential element concentrations in media, roots, or foliage of either species.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
More From: Journal of the American Society for Horticultural Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.