Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-02T21:07:00.933Z Has data issue: false hasContentIssue false
  • English
  • Français

Comparative studies on the active transport by excised roots of inbred and hybrid maize

Published online by Cambridge University Press:  27 March 2009

G. Ferrari  and
F. Renosto
G. Ferrari
Affiliation:
Institute of Agricultural Chemistry, University of Padua, Italy
F. Renosto
Affiliation:
Institute of Agricultural Chemistry, University of Padua, Italy
Get access Rights & Permissions [Opens in a new window]

Summary

The characteristics of ion active transport by excised roots of hybrid and inbred maize were evaluated in short-term uptake experiments with 35S-labelled sulphate. Hybrids showed a higher transport rate per unit of both dry matter and protein, in comparison with inbred lines.Vmax and Km were quite different for inbreds and hybrids, demonstrating an effect of crossing on the characteristics of the transport system. An effect on the transport system was also shown by better adaptation of the hybrids to low temperatures: the hybrid to inbred transport-rate ratio increased with the temperature decrease.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 79 , Issue 1 , August 1972 , pp. 105 - 108
Copyright
Copyright © Cambridge University Press 1972

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Elzam, O. E. & Hodges, T. K. (1967). Calcium inhibition of potassium absorption in Corn roots. PI. Physiol. 42, 1483–8.CrossRefGoogle ScholarPubMed
Ferrari, G. & Nisato, D. (1971). Enzyme induction in ion absorption by plants: an experimental approach. PI. Soil 34, 519–23.CrossRefGoogle Scholar
Ferrari, G. & Renosto, F. (1972). Regulation of sulphate uptake by excised barley roots in the presence of selenate. PI. Physiol. 49, 114–16.CrossRefGoogle ScholarPubMed
Hageman, R. H., Lang, E. R. & Dudley, J. W. (1967). A biochemical approach to corn breeding. Adv. Agron. 19, 45–86.CrossRefGoogle Scholar
Kessler, E., Arthur, W. & Brugger, J. E. (1957). The influence on Mn and phosphate on delay light, fluorescence, photoreduction and photosynthesis in algao. Arch. Biochem. Biophys. 71, 323–35.CrossRefGoogle Scholar
Leaver, C. J. & Edelman, J. (1965). Antibiotics as a means of control of bacterial contamination of storage tissue discs. Nature, Lond. 207, 1000–1.CrossRefGoogle Scholar
Legget, J. E. & Epstein, E. (1956). Kinetics of sulphate absorption by barley roots. PI. Physiol. 31, 222–26.CrossRefGoogle Scholar
Pardee, A. B. (1968). Membrane transport proteins. Science, N.Y. 162, 632–7.CrossRefGoogle ScholarPubMed
Reiner, J. M. (1969). Behaviour of Enzyme Systems, p. 66. Van Nostrand Reinhold Co.Google Scholar
Sarkissian, I. V. & Huffaker, R. C. (1962). Derepression and stimulation by chloramphenichol of development of carboxylating enzyme activity in inbred and hybrid barley. Proc. natn. Acad. Sci. U.S.A., 48, 735–43.CrossRefGoogle Scholar
Scandalios, J. G. (1966). Amylase isoenzymes polymorphism in maize. Planta 69, 244–8.CrossRefGoogle Scholar