The Opportunity for and Significance of Alteration of Ribulose 1,5-Bisphosphate Carboxylase Activities in Crop Production

  • R. W. F. Hardy
  • U. D. Havelka
  • B. Quebedeaux
Part of the Basic Life Sciences book series (BLSC, volume 11)

Summary

Increased population and the dietary changes accompanying increased affluence are creating a need for a suggested doubling of world cereal grain production (a 3% per year compounding rate) and quadrupling of grain legume production (a 6% per year compounding rate) during this quarter century (1). CO2 enrichment of field-grown crops has demonstrated the possibility of enhancing RuBP carboxylase activity to achieve improved crop production; it increases the production of grain legumes by 50 to 100% and that of cereal grains, for which the studies are less complete, by perhaps 10 to 50%. Results of O2 alteration of growth-room legumes and cereal grains are consistent with the results of CO2 enrichment except for a second role of O2 in assimilate partitioning. It may be necessary to include other components of the system, e.g., additional soil fertility, especially for non-N2-fixing plants, to enable an improved RuBP carboxylase to increase production. No practical method—chemical, genetic, or physical—of improving RuBP carboxylase activity has been reported.

Keywords

Sugar Sucrose Starch Dioxide Corn 

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Copyright information

© Plenum Press, New York 1978

Authors and Affiliations

  • R. W. F. Hardy
    • 1
  • U. D. Havelka
    • 1
  • B. Quebedeaux
    • 1
  1. 1.Central Research & Development DepartmentExperimental Station E. I. du Pont de Nemours & Company, Inc.WilmingtonUSA

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