. The Botrytis blight of tulips ... Botrytis; Tulips. The amount of starch shown here may be compared with that shown in figure 44 Fig. 44. starch accumulation in diseased TISSUE. X 277 Starch cells in a diseased area of an outer bulb scale, showing numerous starch grains and intercellular mycelium. (Camera-lucida drawing) Vascular bundles in the bulb scale were markedly affected, and in one case the xylem had entirely disappeared while the phloem, though attacked, still remained in part. In another specimen the bundle had been disintegrated on the side toward the lesion. This involved the phl
. The Botrytis blight of tulips ... Botrytis; Tulips. The amount of starch shown here may be compared with that shown in figure 44 Fig. 44. starch accumulation in diseased TISSUE. X 277 Starch cells in a diseased area of an outer bulb scale, showing numerous starch grains and intercellular mycelium. (Camera-lucida drawing) Vascular bundles in the bulb scale were markedly affected, and in one case the xylem had entirely disappeared while the phloem, though attacked, still remained in part. In another specimen the bundle had been disintegrated on the side toward the lesion. This involved the phloem, the cells of which stained a deeper blue. There was starch accumulation in this region. Penetration of the fungus into the leaf tissue has been observed. No appressoria are formed by the germ tubes, which instead pene- trate directly through the leaf surface, either through stomata or. 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 Hopkins, Edwin Fraser, 1891- [from old catalog]. [Ithaca]
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Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttulips, bookyear1921
