Nineteen groundnut genotypes were screened for physiological characters, chlorophyll content and nitrate reductase activity at 30 DAS (pre-anthesis) and 60 DAS (post-anthesis) along with kernel yield during the Pre-summer. Leaf chlorophyll content and nitrate reductase activity plays a considerable role in plant metabolism. | Screening of genotypes on basis of chlorophyll content nitrate reductase activity and kernel yield in groundnut Arachis hypogaea L.