Plant Physiol. Drug Metab Dispos
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Plant Physiology 63:294-297 (1979)
© 1979 American Society of Plant Biologists

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Articles

8-[14C]Benzylaminopurine Translocation in Phaseolus vulgaris1

Angelo Ramina, Ferdinando Pimpini, Antonio Boniolo and Ferruccio Bergamasco

a Institute of Pomology, University of Padova, 35100 Padova, Italy

[8-14C]Benzylaminopurine (BA) translocation was studied in whole plants of Phaseolus vulgaris L. under three different light regimes (continuous light, 8-hour light + 16-hour dark, dark). Applications were made to the apex, to a cotyledonary leaf, or to the root system. Results showed that no BA basipetal translocation occurred, however BA is easily absorbed by the root system and is translocated acropetally.

The amount of BA absorbed and its acropetal translocation rate depend on the light regime. The hypothesis of a passive cytokinin transport through the xylem, regulated by the transpiration stream, is discussed.

1 Authorized for publication as Paper No. 119 of the Scientific Journal Series of the Institute of Pomology, University of Padova.






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Copyright © 1979 by the American Society of Plant Biologists