Original scientific paper

The Effect of X-ray Radiation on the Transpiration of Kitchen Onion (Allium cepa L.) in the Course of Ontogenesis

Vladimir Srb ; Češka
Zdena Petráñková ; Češka

Abstract

Very little attention was paid to the study of water régime of plants irradiated by ionizing radiation. No literary data have been found for Allium cepa. The authors have established that the ionizing X-radiation (100 r, 500 r, 1,000 r) affects the course of transpiration of the part of kitchen onion above ground in the course of whole ontogenesis. They have also recorded changes in the daily dynamics of transpiration. The curves of transpiration intensity were on the whole of descending character from the beginning to the end of vegetation period in the control plants and in the plants grown from the onions irradiated by “lower” doses. The transpiration intensity was many times higher in the plants irradiated by a dosis of 1,000 r. In the control plants the curves characterizing the daily course of transpiration showed a tendency to one-top curves with the midday minimum. The ionizing X-radiation affected the daily transpiration dynamics to such a degree that we were unable to explain the curves obtained.

Keywords

Hrčak ID:

154231

URI

https://hrcak.srce.hr/154231

Publication date:

31.12.1966.

Article data in other languages: croatian

Visits: 1.303 *