重金属对23个亚麻（Linum usitatissimum L.）品种根系伸长抑制的影响。
Effect of heavy metals on inhibition of root elongation in 23 cultivars of flax (Linum usitatissimum L.).
作者信息
Soudek Petr, Katrusáková Adéla, Sedlácek Lukás, Petrová Sárka, Kocí Vladimír, Marsík Petr, Griga Miroslav, Vanek Tomás
机构信息
Laboratory of Plant Biotechnologies, Joint Laboratory of the Institute of Experimental Botany AS CR, v.v.i., and Crop Research Institute, v.v.i., Rozvojová 263, 165 02, Prague 6, Czech Republic.
出版信息
Arch Environ Contam Toxicol. 2010 Aug;59(2):194-203. doi: 10.1007/s00244-010-9480-y. Epub 2010 Feb 20.
The effect of toxic metals on seed germination was studied in 23 cultivars of flax (Linum usitatissimum L.). Toxicity of cadmium, cobalt, copper, zinc, nickel, lead, chromium, and arsenic at five different concentrations (0.01-1 mM) was tested by standard ecotoxicity test. Root length was measured after 72 h of incubation. Elongation inhibition, EC50 value, slope, and NOEC values were calculated. Results were evaluated by principal component analysis, a multidimensional statistical method. The results showed that heavy-metal toxicity decreased in the following order: As3+>or=As5+>Cu2+>Cd2+>Co2+>Cr6+>Ni2+>Pb2+>Cr3+>Zn2+.
研究了有毒金属对23个亚麻（Linum usitatissimum L.）品种种子萌发的影响。通过标准生态毒性试验，测试了镉、钴、铜、锌、镍、铅、铬和砷在五种不同浓度（0.01 - 1 mM）下的毒性。培养72小时后测量根长。计算伸长抑制率、半数有效浓度（EC50）值、斜率和无可见效应浓度（NOEC）值。结果采用主成分分析这一多维统计方法进行评估。结果表明，重金属毒性按以下顺序降低：As3+≥As5+>Cu2+>Cd2+>Co2+>Cr6+>Ni2+>Pb2+>Cr3+>Zn2+ 。
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