Correlation Between Environmental Conditions and Foliar Chemical Parameters in Ligustrum lucidum Ait. Exposed to Urban Air Pollutants

摘要

A diagnostic study was made of Ligustrum lucidum Ait. in relation to atmospheric pollutants in C6rdoba city, Argentina. The study area receives regional pollutants, and it was categorized by taking into account traffic level, industrial density, type of industry, position of the sample point in relation to the comer, treeless condition and topographic level. Dried weight/fresh weight ratio (DW/FW) and Specific Leaf Area (SLA) were calculated; and concentration of chlorophylls, carotenoids, total sulphur, soluble proteins, malondialdehyde and hydroperoxy conjugated dienes were determined for leaf samples. Malondialdehyde correlates positively with traffic density; foliar sulphur correlates negatively with type of industry; and, finally, DW/FW ratio and SLA correlates negatively with treeless conditions. On the other hand, the concentration of photosynthetic pigments correlates negatively with sulphur, hydroperoxy conjugated dienes, proteins, DW/FW ratio and SLA.