The Nucleolar Chromosome in Hepatics.: II. A Phylogenetic Speculation
Author: Berrie, Geoffrey K.
Source: Transactions of the British Bryological Society, Volume 3, Number 3, 1958 , pp. 427-429(3)
Publisher: Maney Publishing
Abstract:1. The gametophytic chromosome set of Riccardia pinguis (L.) Gray shows signs of diploid origin.
2. The basic chromosome number of the Anthocerotae makes it possible that the ancestor of the Hepaticae belonged broadly, to this class.
3. The simplest way in which the chromosome complement of the Anthocerotae may be related to that of the Hepaticae is by diploidy; a complement produced in this way would have the same features as that of R. pinguis.
4. On the basis of morphological evidence it has previously been suggested that the Anthocerotae may be ancestral to the Hepaticae, and that the connexion may be through a plant resembling Riccardia (Campbell, 1940).
Document Type: Research Article
Publication date: 1958-07-01