234 GERMINATION OF SPORES 



Goddard, D. R., "The reversible heat activation inducing germination and 



increased respiration in the ascospores of Neurospora tetrasperma," 



J. Gen. Physiol., 19: 45-60, 1935. 

 Goddard, D. R., and P. E. Smith, "Respiratory block in the dormant spores 



of Nettrospora tetrasperma," Plant Physiol., 75:241-264, 1938. 

 Hart, Helen, "Factors affecting the development of flax rust, MeLvnpsora 



lini (Pers.) Lev," Phytopathology, 16:185-205, 1926. 

 Hemmi, H., and T. Abe, "On the relation of air humidity to germination 



of urediniospores of some species of Puccinia parasitic on cereals," 



Forsch. Gebiete Pflanzenk., 2: 1-10, 1933. 

 Hoffman, H., "Untersuchungen iibcr Kcimung der Pilzsporen," Jahrb. 



wiss. Botan., 2: 267-297, 1860. 

 Horner, G. R., "Germination of aeciospores, urediniospores, and teliospores 



of Puccinia coronata" Botan. Gaz., 12: 173-177, 1921. 

 Jahn, E., "Mvxomycetenstudien 4. Die Keimung der Sporen," Ber. dent. 



botan. Ges., 23: 489-497, 1905. 

 Johnson, E. C, "Cardinal temperatures for the germination of uredinio- 

 spores of cereal rusts (abst.)," Phytopathology, 2:47^8, 1912. 

 Jones, Edith S., "Influence of temperature, moisture, and oxygen on spore 



germination of Ustilago avenae" J. Agr. Research, 24: 577-590, 1923. 

 Kauf.m ann, F. H. O., "Studies on the germination of the spores of certain 



Basidiomycetes," Botan. Gaz., 96: 282-297, 1934. 

 Lauritzen, J. I., "Relation of temperatures and humidity to infection by 



certain fungi," Phytopathology, 9: 7-35, 1919. 

 Lin, C. K., "Germination of the conidia of Sclerotinia fructicola, with special 



reference to the toxicity of copper," Cornell Agr. Expt. Sta. Mem., 



233: 1-33, 1940. 

 "Nutrient requirements in the germination of the conidia of Glomerella 



cingnlata," Am. J. Botany, 32: 296-298, 1945. 

 Ling, Lee, "Factors affecting spore germination and growth of Urocystis 



occulta in culture," Phytopathology, 30: 579-591, 1940. 

 Luyet, B. F., and P. M. Gehenio, Life and death at low temperatures. 341 



pp. Biodvnamica, Normandv, Mo. 1941. 

 M \neval, W. E., "Germination of teliospores of rusts at Columbia, Mis- 

 souri," Phytopathology, 72:471-488, 1922. 

 McCaj i an, S. E. A., and Frank Wilcoxon, "The precision of spore-germi- 

 nation tests," Contrib. Boyce Thompson Inst., 4: 233-243, 1932. 

 Melhus, I. E., "Experiments on spore germination and infection in certain 



species of Oomvcctes," Wis. Agr. Expt. Sta. Research Bull., 15: 25-91, 



1911. 

 "Germination and infection with the fungus of the late blight of potato," 



Wis. Agr. Expt. Sta. Research Bull., 57:64 pp. 1915. 

 Mi i in s. 1. 1 .. and I.. \V. Dl krell, "Studies on the crown rust of oats," Iowa 



i r. Expt. Sta. Research Bull., 4 ( J: 115-144, 1919. 

 Noble, R. J., "Studies on Urocystis tritici Koern., the organism causing flag 



smut of wheat/' Phytopathology, 13: 127-139, 1923. 

 Platz, G. A., L. W. Durrell, and Mary E. Howe, "Effect of carbon dioxide 



