PHYTOEXTRACTION OF LEAD (Pb) BY EDTA APPLICATION THROUGH SUNFLOWER (HELIANTHUS ANNUUS L.) CULTIVATION: SEEDLING GROWTH STUDIES
Year: 2006
Type: article
Abstract: A series of lab experiments were conducted to assess the toxicity of lead (Pb) and its phytoextraction through sunflower cultivation. Seedling growth as shoot length, root length and dry matter stress tolerance indices were reduced with increasing concentration of lead (Pb) or EDTA. Very severe effect of Pb and EDTA was noted in case of root length stress tolerance index however, Pb affected root length stress tolerance index more adversely than that of EDTA. The toxicity of Pb for sunflower plants was reduced when applied in combination with EDTA at 1.0-1.0 and 2-1.5 Pb-EDTA levels. Lead @ 3.5 mM and EDTA @ 3 mM in the growth medium showed 50% reduction in shoot length when applied separately. EDTA also reduced shoot, root length and dry matter stress tolerance indices and the effect was more pronounced at higher levels of EDTA. Root length and dry matter stress tolerance index increased when Pb was applied in combination of EDTA. The results showed that addition of EDTA was effective in enhancing the uptake of Pb in
Source: Pakistan Journal of Botany
Authors: Nazila Azhar, Faisalabad . Salinity Biology, Muzzamal Hussain, Fazal Hussain
Language: English
Topic: Heavy metals in environment
Subfield: Pollution
Field: Environmental Science
Domain: Physical Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W2188165694