Lowest concentrations of chlorophyll were recorded at 2000mg/L Pb and 5mM EDTA and exhibited a decreasing trend specifically in the ranges of 1000 and 2000mg/L Pb and 1.0 and 5.0mM EDTA.
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Morphological and physiological responses of morning glory (Ipomoea lacunosa L.) grown in a lead- and chelate-amended soil.
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The sentences
Two-way ANOVA results indicated that the effect of EDTA, Pb concentrations, and the interaction between Pb and EDTA on net photosynthesis were highly significant at the 1% level.