. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. RUST FUNGI 193 the teliospore reaches maturity, the nuclei fuse, and the uninucleate condition then continues again until the formation of the aecia. In the micro- and lepto-iorms, which have no aecium or uredinium, we find that the association takes place at points in the ordinary mycelium, but. Fig. 67.—Portion of a section of cedar apple about 5 mm. below a teliosorus. Note (i) Binucleate intercellular inyceliiim; (2) the haustoria in various stages of development; (3) the doubling o
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. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. RUST FUNGI 193 the teliospore reaches maturity, the nuclei fuse, and the uninucleate condition then continues again until the formation of the aecia. In the micro- and lepto-iorms, which have no aecium or uredinium, we find that the association takes place at points in the ordinary mycelium, but. Fig. 67.—Portion of a section of cedar apple about 5 mm. below a teliosorus. Note (i) Binucleate intercellular inyceliiim; (2) the haustoria in various stages of development; (3) the doubling of nucleoli in the nuclei of some of the parenchyma cells of the host. Material collected on March 31. (After Reed. B. S., and CrabiU, C. H., Techn. Bull. 9, Va. Agric. Exper. Slat., May. 1915.) always before the formation of the teUospores. Whether the association of nuclei in the ordinary myceUum takes place by the migration of a nucleus from one cell to another, or whether two daughter nuclei become conjugate in one cell has not been settled definitely. The pycnospores are probably abortive male cells. They have never 13. 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 work.. Harshberger, John W. (John William), 1869-1929. Philadelphia : P. Blakiston's Son & Co