PREVIOUS work on the ability of various portions of the root to supply the shoot with minerals has been carried out using the seminal roots of cereals grown in nutrient solution when the plants were a few days old. Weibe and Kramer1 considered that in barley the most active zone of absorption and translocation of minerals was situated some distance behind the tip. The results of Lundegårdh2, also working on barley, indicated that most nitrate was translocated from the basal portion of the root, that is, that nearest the shoot.
Weibe, H. H., and Kramer, P. J., Plant Physiol., 29, 342 (1954).
Lundegårdh, H., Physiol. Plant., 3, 103 (1950).
Boggie, R., Hunter, R. F., and Knight, A. H., J. Ecol., 621 (1958).
Stout, P. R., and Hoagland, D. R., Amer. J. Bot., 26, 320 (1940).
Soper, K., N.Z. J. Agric. Res., 2, 329 (1959).
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Akkumulation und Translokation von K+, Na+ und Ca2+ bei Angebot zu einzelnen Wurzelzonen von Maiskeimpflanzen
Zeitschrift für Pflanzenernährung und Bodenkunde (1973)
Plant and Soil (1967)
The International Journal of Applied Radiation and Isotopes (1962)