- 期刊
- OpenAccess
Toxic Effects of Lead on Growth and Some Biochemical and Ionic Parameters of Sunflower (Helianthus annuus L.) Seedlings
並列摘要
Lead (Pb) is one of the non essential and toxic heavy metals which can cause oxidative stress in plants. The effects of Pb(NO_3)_2 toxicity on growth and some biochemical parameters of record cultivars of Helianthus annuus L. were studied under hydroponic condition. Different treatments of Pb(NO_3)_2 [control (0), 200, 400, 600 and 800 :M] were used in order to consider changes in dry weight, proline and Pb accumulation in roots and shoots; Total chlorophyll, enzyme activity (catalase and peroxidase) and K^+, Ca^(2+) amounts of leaves. Compared with the control, Pb treatment caused a significant decrease in roots and shoots dry weight, leaves chlorophyll, catalase activity and K^+, Ca^(2+) amounts. In contrast, a significant increase in proline and Pb accumulation of roots and shoots and peroxidase activity of leaves was observed in Pb treatments.
延伸閱讀
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