Negash, Legesse2022-01-242023-11-082022-01-242023-11-081982-06http://etd.aau.edu.et/handle/123456789/29600the presence , substrate ind cibility and regulatios of the enzyme ni trate reductase ( NADH : Nitrate Oxidored case , E . C. 1.6. 6.• )(NR) of b o h ark- grown and l igh - gro n tef plants ( Eragr osti s te f (Zucc . ) Trotter) were st died . The relat ive merits of the in vivo and i n vitr o methods of assay for t he en zyme we r e ev a l uated . Major fac ors affecting n i t r a e r educta se act ivit y and the distr ibution of the e zyme in both t h e dark- and light- grown plants wer e investigated .enThe in Vivo and in Vitro Nitrate Reductase ActivityThesis