Influence of lead and cadmium on growth, heavy metal uptake, and nutrient concentration of three lettuce cultivars grown in hydroponic culture
Influence of lead and cadmium on growth, heavy metal uptake, and nutrient concentration of three lettuce cultivars grown in hydroponic culture
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DOI：
10.1081/css-100103029
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发表时间：
2001-01-01
影响因子：
1.8
通讯作者：
Asp, H
中科院分区：
文献类型：
--
作者：
Michalska, M;Asp, H
研究了3种莴苣（Lactucasativa L.）品种进行水培试验。将不同量的镉（Cd）和叶（Pb）添加到营养液中（0; 0.05 μ M Cd; 0.5 μ M Cd; 0.05 μ M Ph; 0.5 μ M Pb; 0.5 μ M Cd连同0.5 μ M Pb）。0.5 μ M镉和0.5 μ M镉与0.5 μ M铅的存在下，叶和根的新鲜和干物质产量显着降低。溶液中Cd、Pb浓度越高，Cd、Pb在植物体内的积累量越大。重金属的积累主要集中在根部。营养液中Cd和Pb的组合对大多数研究参数具有加性效应。铅单独存在，几乎在所有情况下，没有影响的宏观和微量元素的浓度。镉的浓度为0.5 μ M的镉和镉与铅一起造成了显着增加的Ca和Cu的含量在地上部的含量的pH值。Roxette积累最少的铅在0.5 μ M的铅，而Pia的最少时，镉和pH值都存在于溶液中。
The uptake of cadmium and lead by three lettuce (Lactuca sativa L.) cultivars was studied in water culture experiment. Different amounts of cadmium (Cd) and leaf (Pb) were added to the nutrient solution (0; 0.05 muM Cd; 0.5 muM Cd; 0.05 muM Ph; 0.5 muM Pb; 0.5 muM Cd together with 0.5 muM Pb). Fresh and dry matter yield of leaves and roots were significantly reduced by the presence of 0.5 muM Cd and 0.5 muM Cd together with 0.5 muM Pb. The higher the Cd or Pb concentration in solution the more Cd and Pb accumulated in the plants. Most of the accumulated heavy metals were located in the roots. The combination of Cd and Pb in the nutrient solution had an additive effect on most investigated parameters. The presence of lead alone, almost in all cases, did not effect the concentration of macro- and microelements. Cadmium in concentration 0.5 muM Cd and Cd together with Pb caused a significant increase of the Ca and Cu contents in shoot content of ph. Roxette accumulated the least Pb in the roots at 0.5 muM Pb whereas Pia the least when both Cd and ph were present in the solution.