摘要
In the condition that soil is polluted by Cd（20 mg·L-1）,two varieties of tomato（Lycopersicon esculintum Mill.）（plant high Cd-enriched variety（Yufen109）and plant low Cd-enriched variety（4641））treated with LaCl3 of different concentration（0,10 and 20mg·L-1）were determined for their effect on plant dry weight,anti-oxidase activity（CAT,SOD and POD）,tomato fruit Cd chemical form and Cd accumulation.The results show that 10 mg？L-1LaCl3 can increase dry weight of plant at various positions and can reduce the concentration of Cd of different forms.Spraying with LaCl3（10,20 mg·L-1）can reduce Cd concentration in leaves,stems,roots and fruits of tomato plants with lowering rates of 13.7%-31.9%,9.5%-30.6%,10.8%-44.5%and 19.4%-37.0%,respectively.Suitable amount of lanthanum（10 mg·L-1 LaCl3）can increase yield of tomatoes,reduce Cd accumulation in the fruit.In the two tomato varieties,Lanthanum and Cadmium react interactively,expressing to be coexisting of both synergism and antagonistic.
In the condition that soil is polluted by Cd（20 mg·L-1）,two varieties of tomato（Lycopersicon esculintum Mill.）（plant high Cd-enriched variety（Yufen109）and plant low Cd-enriched variety（4641））treated with LaCl3 of different concentration（0,10 and 20mg·L-1）were determined for their effect on plant dry weight,anti-oxidase activity（CAT,SOD and POD）,tomato fruit Cd chemical form and Cd accumulation.The results show that 10 mg？L-1LaCl3 can increase dry weight of plant at various positions and can reduce the concentration of Cd of different forms.Spraying with LaCl3（10,20 mg·L-1）can reduce Cd concentration in leaves,stems,roots and fruits of tomato plants with lowering rates of 13.7%-31.9%,9.5%-30.6%,10.8%-44.5%and 19.4%-37.0%,respectively.Suitable amount of lanthanum（10 mg·L-1 LaCl3）can increase yield of tomatoes,reduce Cd accumulation in the fruit.In the two tomato varieties,Lanthanum and Cadmium react interactively,expressing to be coexisting of both synergism and antagonistic.
基金
Supported by the National Natural Science Foundation of China(20477032)
Fund of China Agriculture Research System(Nycytx-25)
