. Bulletin of the Department of Agriculture. Agriculture; Agriculture. RHIZOPUS EOT OF STRAWBERRIES IN TRANSIT. 5 the morphological characters are concerned the fungus under consid- eration when grown under certain conditions agrees very well with his description of Rhizopus nigricans Ehrb. It is evident from his description that Hanzawa studied the fungus under rather uniform conditions, as the measurements given by no means include its limits of Fig. 1.—Effect of Rhizopus nigricans on strawberries of the Missionary variety which had stood for two days at room temperature.
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. RHIZOPUS EOT OF STRAWBERRIES IN TRANSIT. 5 the morphological characters are concerned the fungus under consid- eration when grown under certain conditions agrees very well with his description of Rhizopus nigricans Ehrb. It is evident from his description that Hanzawa studied the fungus under rather uniform conditions, as the measurements given by no means include its limits of Fig. 1.—Effect of Rhizopus nigricans on strawberries of the Missionary variety which had stood for two days at room temperature. Each berry in the flask at the right had been inoculated with Rhizopus nigricans. In connection with studies on the humidity relations of this fungus (p. 7), the writers found that at a temperature of 20° C. the length of the sporangiophore and the size of the columella vary greatly in air of different humidities. For example, in air with a saturation deficit of 17 mm. of mercury, per cent relative humidity, spo- rangiophores are mostly 1 mm. in length, while in saturated air they are from 3 to 4 cm. long. In air with a saturation deficit of 17 mm. of mercury the columellse are mostly 95 to 100 ^ in width; in saturated air they are mostly from 150 to ISO [j. wide. The size of spores and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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