16 P. R. DAY 



Johnson, T. 1946. Variation and the inheritance of certain characters 



in rust fungi. Cold Springs Harbor Symp. Quant. Biol. 11: 85-93. 

 Johnson, T. 1949. Inheritance of pathogenicity and urediospore color in 



crosses between physiologic races of oat stem rust. Can. J. Res. (C) 



27: 203-217. 

 Johnson, T. 1954. Selfing studies with physiological races of wheat stem 



rust, Fucoinia graminis var. tritici. Can. J. Bot . 32: 506-522. 

 Johnson, T., and M. Newton. 1938. The origin of abnormal rust character- 

 istics through inbreeding of physiologic races of Fucoinia graminis 



tvitici. Can. J. Res. (C) 16: 38-52. 

 Joshi , L. M. , and D. Kak. 1955. Mutation in Fucoinia graminis tritici 



Pers. E & H. physiologic race 194. Indian Phytopathol. 8: 202-204. 

 Kao, K. N., and D. R. Knott. 1969. The inheritance of pathogenicity in 



races 111 and 29 of wheat stem rust. Can. J. Genet. Cytol. 11: 266-274. 

 Little, R. , and J. G. Manners. 1967. Production of new physiologic races 



in Fucoinia striiformis (yellow rust) by heterokaryosis . Nature 213: 



422. 

 Loegering, W. A., and H. R. Powers, Jr. 1962. Inheritance of pathogenicity 



in a cross of physiological races 111 and 36 of Fuocinia graminis f. sp. 



tritici. Phytopathology 52: 547-554. 

 Luig, N. H. 1967. A high reversion rate for yellow urediospore color in 



Fucoinia graminis f. sp. tritici. Phytopathology 57: 1091-1093. 

 Luig, N. H. , and E. P. Baker. 1956. A note on a uredospore colour mutant 



in barley leaf rust Fucoinia hordii Otth. Proc. Lin. Soc. New South 



Wales 81: 115-118. 

 Luig, N. H. , and I. A. Watson. 1961. A study of inheritance of patho- 

 genicity in Fuocinia graminis var. tritici. Proc. Lin. Soc. New South 



Wales 86: 217-229. 

 Macer, R. C. F. 1967. The occurrence of a virulent and genetically stable 



physiologic race of Fucoinia striiformis. Trans. Brit. Mycol. Soc. 50: 



305-310. 

 McCain, A. H. 1959. The inheritance of pathogenicity in Fucoinia carthami. 



Phytopathology 49: 544. 

 McKee, R. K. 1969. Effects of ultra violet irradiation on zoospores of 



Phytophthora infestans. Trans. Brit. Mycol. Soc. 52: 281-291. 

 Miah, M. A. 1968. Method of selfing F± cultures and interpreting genetic 



data in rust fungi. Can. J. Genet. Cytol. 10: 613-619. 

 Misra, D. P., and V. C. Lele. 1955. Mutation in Fucoinia graminis tritici ,4 ; 



physiologic race 15C. Indian Phytopathol. 8: 79-81. 

 Nelson, R. R. , R. D. Wilcoxson, and J. J. Christenson. 1955. Hetero- 



caryosis as a basis for variation in Fucoinia graminis var. tritici. 



Phytopathology 45: 639-643. ^ 



Nelson, R. R. 1956. Transmission of factors for urediospore color in 



Fucoinia graminis var. tritici by means of nuclear exchange between 



vegetative hyphae. Phytopathology 46: 538-540. 

 Newton, M. , and T. Johnson. 1927. Color mutations in Fucoinia graminis 



tritici (Pers.)Erikss. and Henn. Phytopathology 17: 711-725. 

 Newton, M. and T. Johnson. 1939. A mutation for pathogenicity in „Jg* 



Fucoinia graminis tritici. Can. J. Res. (C) 17: 29 7-299. 

 Newton, M. , T. Johnson, and A. M. Brown. 1930. A study of the inheri- 

 tance of spore colour and pathogenicity in crosses between physiologic 



forms of Fucoinia graminis tritici. Sci. Agric. 10: 775-798. 

 Patton, R. F. 1962. Inoculation with Cronartium ribicola by bark patch 



grafting. Phytopathology 52: 1149-1153. 

 Person, C. , D. J. Samborski, and F. R. Forsyth. 1957. Effect of benzimidazo 



on detached wheat leaves. Nature 180: 1294-1295. 

 Rowell, J. B., W. Q. Loegering, and H. R. Powers. 1963. Genetic model 



for physiologic studies of mechanisms governing development of infection 



type in wheat stem rust. Phytopathology 53: 932-937. 





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