. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. 208 PROTOBASIDIOMYCETES [CH. the usual way. In the micro- form Puccinia transformans OHve observed that the binucleate condition was brought about by the fusion in pairs of cells to form the basal cells from which the teleutospores arose and the same has been reported by Moreau for Puccinia Buxi and Uromyces Ficariae. In Puccinia Malvacearuni Moreau occasionally found a difference in size between the fusing cells, and Werth and Ludwig observed the migration of the nucleus of the smaller cell into the larger (fig. i84«). Below the teleutos
Image details
Contributor:
The Book Worm / Alamy Stock PhotoImage ID:
RDX0HKFile size:
7.2 MB (138.3 KB Compressed download)Releases:
Model - no | Property - noDo I need a release?Dimensions:
1027 x 2434 px | 17.4 x 41.2 cm | 6.8 x 16.2 inches | 150dpiMore information:
This image is a public domain image, which means either that copyright has expired in the image or the copyright holder has waived their copyright. Alamy charges you a fee for access to the high resolution copy of the image.
This image could have imperfections as it’s either historical or reportage.
. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. 208 PROTOBASIDIOMYCETES [CH. the usual way. In the micro- form Puccinia transformans OHve observed that the binucleate condition was brought about by the fusion in pairs of cells to form the basal cells from which the teleutospores arose and the same has been reported by Moreau for Puccinia Buxi and Uromyces Ficariae. In Puccinia Malvacearuni Moreau occasionally found a difference in size between the fusing cells, and Werth and Ludwig observed the migration of the nucleus of the smaller cell into the larger (fig. i84«). Below the teleutosorus of Pitccinia Podophylli also, Christman found nuclear migrations in progress (fig. 184 c). Such cases clearly suggest that here, as in the mycelium below the aecidium of P. Poarutn and in the prothallus of pseudapogamous ferns, the sporophyte is initiated by the association of two vegetative nuclei. Christman, however, observed that in certain cases migration took place between cells already binucleate, and he hence regards migrations in this case, and is inclined to regard all other migrations in rusts, as due to pathological causes.. 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.. Gwynne-Vaughan, Helen Charlotte Isabella (Fraser) Dame, 1879-. Cambridge [Eng] University Press