Effect of moisture stabilization period on radiosensitivity of barley seeds

Notani, N. K. ; Gaur, B. K. ; Joshi, R. K. ; Bhatt, B. Y. (1968) Effect of moisture stabilization period on radiosensitivity of barley seeds Radiation Botany, 8 (5). pp. 375-380. ISSN 0033-7560

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00337...

Related URL: http://dx.doi.org/10.1016/S0033-7560(68)80037-7

Abstract

An experiment was designed to study the nature of the increase in radiosensitivity at high moisture levels. Seed lots were stabilized for different periods (2-16 weeks) so as to attain uniformly high (25%) water content and were then irradiated with 60Co γ-rays (28·56 and 42·84 kR for growth studies and 28·0 and 40 kR for cytological experiments). Unirradiated controls showed little difference in growth as a result of differences in equilibration periods. On the other hand, irradiated seeds showed an increase in radiosensitivity with increasing equilibration period. The role of any alteration in the respiration and/or chromosomal duplication was then assessed. The change in respiration rate (presumably affecting the intracellular oxygen tension) was apparently better correlated with the increase in radiosensitivity.

Item Type:Article
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