Abstract
THIS is the second part of Fritz von Wettsteins well-known experimental work on mosses, the first part having appeared in 1924. The present contribution deals largely with hybridisation between different species and genera of mosses, and with heteroploidy produced experimentally by Marchal's original method of wounding the sporophyte. By regeneration from a hybrid sporophyte, and subsequent hybridisation again, various unbalanced types can be obtained, in which the chromosomes may be regular multiples, but more sets will have been derived from one parent species than from the other. These are spoken of as heterogenomatic, homogenomatic forms being those derived from wounding successive generations of sporophytes in pure species, or from crosses giving a balance of chromosome sets. In a section on cell-size, a law for the increase of size accompanying various degrees and kinds of polyploidy is worked out.
Morphologie und Physiologie des Formwechsels der Moose auf genetischer Grundlage, II. (Untersuchungen, ausgeführt mit Unterstützung der Notgemeinschaft der deutschen Wissenschaft zu Berlin und der Gesellschaft der Wissenschaften zu Göttingen.)
Von Fritz von Wettstein. (Bibliotheca Genetica, herausgegeben von Prof. Dr. E. Baur, Band 10.) Pp. iii + 216 + 10 Tafeln. (Leipzig: Gebrüder Borntraeger, 1928.) 48 gold marks.
Article PDF
Rights and permissions
About this article
Cite this article
G., R. Morphologie und Physiologie des Formwechsels der Moose auf genetischer Grundlage, II (Untersuchungen, ausgeführt mit Unterstützung der Notgemeinschaft der deutschen Wissenschaft zu Berlin und der Gesellschaft der Wissenschaften zu Göttingen). Nature 124, 175 (1929). https://doi.org/10.1038/124175b0
Issue Date:
DOI: https://doi.org/10.1038/124175b0