Somatic mutation frequency in the stamen hairs of Tradescantia KU 7 and KU 9 clones exposed to low-level gamma rays.
- 1 January 1981
- journal article
- research article
- Published by Genetics Society of Japan in The Japanese Journal of Genetics
- Vol. 56 (4) , 409-423
- https://doi.org/10.1266/jjg.56.409
Abstract
Two triploid clones (KU 7 and KU 9) of Tradescantia heterozygous for flower color were exposed to 1 to 42.3R of .gamma.-rays or the scattering radiation in the gamma field of the Institute of Radiation Breeding. Occurrence of somatic pink mutations in the stamen hairs was investigated 10-16 (or 14) days after irradiation. The mutation frequency increased linearly with increasing .gamma.-ray exposure in the both clones, and the frequencies of 0.437 and 0.468 pink mutant events per 103 hirs per R were determined for KU 7 and KU 9, respectively. When the data collected in the present study were analyzed together with those obtained in earlier experiments in the .gamma. field, linear relationships of the somatic mutation frequency with .gamma.-ray (2.1 to 201.6 R) and scattering radiation (0.72 to 57.6 R) exposures were confirmed. Scattering radiation had genetical efficiency more than 2 times higher than that of .gamma.-rays. Variation of spontaneous mutation frequency observed in the present study and in earlier studies was inversely correlated to temperature variation.This publication has 1 reference indexed in Scilit:
- Somatic mutations in Tradescantia stamen hairs exposed to ethyl methanesulfonateEnvironmental and Experimental Botany, 1978