2010•Nongye huanjing kexue xuebaoRequires access
Effects of Pb on the Growth and Physiological Characteristics of Arenaria rotumdifolia Bieberstein
Yuan Li
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Abstract
Water culture experiments were conducted in order to understand the effects of lead on the growth,chlorophyll contents,melondialodehyde(MDA) contents and permeability of cell membrane(CMP).The results showed that the plant was strongly inhibited with increases in Pb concentrations and the chlorophyll content increased with low Pb concentration,then decreased with increase in Pb concentration.Melondialodehyde(MDA) contents and permeability of cell membrane(CMP) were increased.With treatment Pb=50 mg·L-1,the height,root length,biomass and chlorophyll contents increased but MDA and CMP kept stable.With treatment Pb100 mg·L-1,the plant was short.The biomasses of shoot and root in fresh matter decreased.Chlorophyll contents decreased and MDA and CMP increased.