| Autor: |
Raymond Handley, K.L. Babcock |
| Rok vydání: |
1970 |
| Předmět: |
|
| Zdroj: |
Radiation Botany. 10:577-583 |
| ISSN: |
0033-7560 |
| DOI: |
10.1016/s0033-7560(70)80068-0 |
| Popis: |
Carrier-free solutions of 137 Cs and 106 Ru were applied to the foliage of three genera of woody shrubs ( Ceanothus, Adenostoma and Quercus ) and subsequent translocation into untreated portions of the plants was measured. In all cases the bulk of the retained dose remained with the directly treated material. The results indicate that in these genera foliarly applied 137 Cs is no more mobile than Sr while 106 Ru is considerably less mobile than either. In another series of experiments the distribution of 85 Sr, 137 Gs and 106 Ru between the root, the old growth and the new growth was determined after incorporation of the isotopes into Ceanothus and Adenostoma via their root systems. 137 Cs and especially 106 Ru were largely retained in the root. A relatively large fraction of the retained dose of 85 Sr was found in the shoot. In both series of experiments a preferential movement of 137 Cs into new growth was observed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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