mac key: induced mutation in crop improvement 355 



11. Caldecott, R. S., and North, D. T. 1961. Factors modifying the 



radio-sensitivity of seeds and the theoretical significance of the 

 acute irradiation of successive generations. This Symposium, 365- 

 -104. 



12. , Stevens, H., and Roberts, B. J. 1959. Stem rust resistant 



variants in irradiated populations — mutations or field hybrids? 

 Aptou. Jour., 51: 401-403. 



13. Conger, A. D. 1957. Some cytogenetic aspects of the effects of plant 



irradiations. Proc. Oak Ridge Reg. Symp., 9: 59-62. 



14. Davies, D. R. 1960. Induced mutations in plant crops. Atom No., 45: 



13-19, 31-32. 



15. Davies, R., and Wall, E. T. 1958. Artificial mutagenesis in plant 



breeding. Nature, 182: 955-956. 



16. Demerec, M. 1938. Hereditary effect of X-ray radiation. Radiology, 



30: 212-220. 



17. Down, E. E., and Andersen, A. L. 1956. Agronomic use of an X-ray- 



induced mutant. Science, 124: 223-224. 



18. Dubovskij, N. V. 1935. On the question of the comparative mutabil- 



ity of stocks of Drosophila melanogaster of different origins. 

 Compt. Rend. Acad. Sci. URSS, 4: 95-97. 



19. Elliott, F. C. 1957. X-ray-induced translocation of Agropyron stem 



rust resistance to common wheat, jour. Hered., 48: 77-81. 



20. . 1959. Further information on an X-ray-induced transloca- 

 tion of Agropyron stem rust resistance to common wheat. Wheat 

 Inform. Serv., 9-10: 26-27. 



21. Faberge, A. C. 1957. A method for treating wheat pollen with ultra- 



violet radiation for genetic experiments. Genetics, 42: 618-622. 



22. Favret, E. A. 1960. Spontaneous and induced mutations of barley for 



the reaction to mildew. Hereditas, 46: 20-28. 



23. Fisher, R. A. 1930. The genetical theory of natural selection. Oxford: 



The Clarendon Press. 



24. Freisleben, R., and Lein, A. 1943. Vorarbeiten zur ziichterischen 



Auswertung rontgeninduzierter Mutationen. Zeit. Pfi. zilcht., 25: 

 235-283. 



25. , . 1944. Moglichkeiten und praktische Durch- 



fuhrung der Mutationszuchtung. Kuhn-Archiv, 60: 211-225. 



26. Gaul, H. 1958. Present aspects of induced mutations in plant breed- 



ing. Euphytica, 7: 275-289. 



27. . 1958. Uber die gegenseitige Unabhangigkeit der Chrom- 



osomen und Punktmutationen. Zeit. Pfi. zilcht., 40: 151-188. 



28. . 1959. tiber die Chimarenbildung in Gerstenpfianzen nach 



