کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2057654 1075905 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Growth rate based dose–response relationships and EC-values of ten heavy metals using the duckweed growth inhibition test (ISO 20079) with Lemna minor L. clone St
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Growth rate based dose–response relationships and EC-values of ten heavy metals using the duckweed growth inhibition test (ISO 20079) with Lemna minor L. clone St
چکیده انگلیسی

SummaryThe duckweed Lemna minor L. clone St was used to investigate the effect of 10 heavy metals under the standardised test conditions of the ISO protocol 20079. By using growth rates derived from frond number (FN), fresh weight (FW), dry weight (DW), chlorophyll and carotenoid (Car) contents, concentration–response curves for all heavy metals and all growth parameters were classified. In addition, all data were fitted to obtain the inhibitions of growth rates (ErCx) at the level of 10%, 20% and 50% (ErC10, ErC20 and ErC50, respectively) then used to evaluate the phytotoxicity of the different heavy metals. On the basis of the ErC50 values (average ranking of all five growth parameters), the following series of phytotoxicity was detected by using molar concentrations: Ag+>Cd2+>Hg2+>Tl+>Cu2+>Ni2+>Zn2+>Co2+>Cr(VI)>As(III)>As(V).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Plant Physiology - Volume 164, Issue 12, 3 December 2007, Pages 1656–1664
نویسندگان
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