00507naa a2200169 a 450000100080000000500110000800800410001910000200006024501140008026000090019465000100020365000210021365000160023470000190025070000200026977300480028916036381995-06-27       1981    bl ---       0--  u    #d1 aRUFTY JR, T. W.  aNitrate reduction in roots as affected by the presence of potassium and by flux of nitrate through the roots.  c1981  aMilho  aNitrato Redutase  aNitrogênio1 aJACKSON, W. A.1 aRAPER JR, C. D.  tPlant Physiol.gv.68, n.3, p.605-609, 1981.