Plant and Soil

, Volume 68, Issue 2, pp 223–229 | Cite as

Control and variation ofin vivo nitrate reductase activity inLolium perenne L. cv S24

I. Morphological distribution of activity
  • S. M. Smith
  • D. B. James


Variation in nitrate reductase activity associated with vegetative development and morphological differences inLolium perenne L. cv S24 was examined using anin vivo technique of enzyme assay. Little difference in enzyme activity per unit weight of leaf laminar tissue was found between tillers, between and within leaf laminae but activity in leaf laminae, was much higher than that of leaf sheaths; the activity of shoot material was greater than the apparent root activity. Senescence of leaf material was not accompanied by marked changes invivo nitrate reductase activity.

Key words

Lolium perenne L. Morphological distribution Nitrate reductase 


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Copyright information

© Martinus Nijhoff/Dr W. Junk Publishers 1982

Authors and Affiliations

  • S. M. Smith
    • 1
  • D. B. James
    • 1
  1. 1.Department of Agricultural BotanyUniversity College of WalesAberystwyth

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