University Of Tehran Press Pollution 2383-451X 4 1 2017 12 30 Responses of Accessions of Zea Mays to Crude Oil Pollution Using Growth Indices and Enzyme Activities as Markers 183 193 64344 10.22059/poll.2017.240286.306 EN K. L Njoku Department of Cell Biology and Genetics, Environmental Biology Laboratory, University of Lagos, Akoka Lagos, Nigeria Journal Article 2017 08 22 The performance of every plant in an environment is an indicator of how the plant can withstand the various environmental conditions. This study investigated the toxicity of crude oil on the growth performance, chlorophyll contents, enzymatic activities and oxidative stress biomarkers of eight accessions of Zea mays. The growth enzyme (amylase and invertase) activities, as well as oxidative stress biomarkers (malondialdehyde, peroxidase, superoxide dismutase and catalase) in Z. mays were assayed using spectrophotometric method. The maize accessions were grown in the experimental pots containing crude oil treatments (2%, 4%, 6%, 8% and 10%) and harvested after 14 days of seedling emergence. The results showed that the percentage seedling emergence, leaf area, root length, stem girth and shoot length of each accession were significantly reduced (p https://jpoll.ut.ac.ir/article_64344_c6692c0ad9b24fa7a850967c7046b9a6.pdf