. Recent research on conifer needle diseases : conference proceedings, October 14-18, 1984, Gulfport, Mississippi. Conifers Diseases and pests Congresses. Figure 1. Lophodermium ascospore germination types. Postpenetration.—Immediately after penetration differences between species were observed. With L. pinastri, the infecting hyphae were observed to form "bladderlike" hyphae in the cuticles but necrosis of the cells below was not observed (fig. 3). At this stage sectioning of needles inoculated with L. pinastri revealed no further growth of the fungus from the cuticular region and n
. Recent research on conifer needle diseases : conference proceedings, October 14-18, 1984, Gulfport, Mississippi. Conifers Diseases and pests Congresses. Figure 1. Lophodermium ascospore germination types. Postpenetration.—Immediately after penetration differences between species were observed. With L. pinastri, the infecting hyphae were observed to form "bladderlike" hyphae in the cuticles but necrosis of the cells below was not observed (fig. 3). At this stage sectioning of needles inoculated with L. pinastri revealed no further growth of the fungus from the cuticular region and no lesions were formed. Remnants of L. pinastri ascospores on the needle surface could not be located in week 14 after ascospore deposition and, as no microsymptoms of infection were visible, this made further sectioning of. 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 Peterson, Glenn W; International Union of Forestry Research Organizations. Working Party on Needle Diseases. Washington, D. C. : U. S. Dept. of Agriculture, Forest Service
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