Biochemical Genetics

, Volume 9, Issue 1, pp 53–62 | Cite as

Plant nucleases. IV. Genetic control of ribonuclease activity in corn endosperm

  • Curtis M. Wilson


Ribonuclease activity in the endosperms of 14 corn (Zea mays L.) inbreds ranged from 285 to 1305 units/g fresh weight 50 days after pollination. Activity is low in the inbred M14 and high in the inbred WF9. Hybrid endosperms contain intermediate levels of ribonuclease, and segregation occurs in the F2 generation. The ribonuclease contents of the opaque-2 versions of nine inbred lines ranged from 1288 to 5110 units/g. The floury-2 mutation apparently does not affect ribonuclease content. Two or more genes may be involved in the control of ribonuclease content of developing endosperms.


Inbred Line Genetic Control Intermediate Level Ribonuclease Activity Corn Endosperm 
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Copyright information

© Plenum Publishing Corporation 1973

Authors and Affiliations

  • Curtis M. Wilson
    • 1
  1. 1.Plant Science Research Division, Agricultural Research ServiceU.S. Department of AgricultureUrbana

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