. Bacteria in relation to plant diseases. Bacteriology; Plant diseases. PLATE The Granville tobacco-wilt, a bacterial disease. The left-hand plant wilted naturally in the field, was pruned, transplanted to the hothouse, recovered for a few weets, developed the leaves shown, and then wilted again. Photographed June 28; one-third natural size. In this disease the vascular ring is browned and cavities are formed in the stem. The bacterial sHme is gray-white and abundant. Fungi were not present in the plants examined by me. Poured plates were made from the interior of several such stems, and
. Bacteria in relation to plant diseases. Bacteriology; Plant diseases. PLATE The Granville tobacco-wilt, a bacterial disease. The left-hand plant wilted naturally in the field, was pruned, transplanted to the hothouse, recovered for a few weets, developed the leaves shown, and then wilted again. Photographed June 28; one-third natural size. In this disease the vascular ring is browned and cavities are formed in the stem. The bacterial sHme is gray-white and abundant. Fungi were not present in the plants examined by me. Poured plates were made from the interior of several such stems, and these yielded practically pure cultures of one organism. A subculture from one of these colonies was used to inoculate the right-hand plant. The needle-pricks were made on July 13, 1905. Photographed August 3; one-half natural size. Twelve plants were inoculated at this time and all contracted the disease. The signs and lesions were the same as in the plants obtained from the field. The organism causing this disease is closely related to Bact. 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 Smith, Erwin F. (Erwin Frink), 1854-1927. Washington, D. C. , Carnegie Institution of Washington
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherwashingtondccarneg
