| Autor: |
Robert W. Hoshaw, R.D. Miller |
| Rok vydání: |
1974 |
| Předmět: |
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| Zdroj: |
British Phycological Journal. 9:145-148 |
| ISSN: |
0007-1617 |
| DOI: |
10.1080/00071617400650181 |
| Popis: |
Cell width is a much used taxonomic character in the algae. Yet no data are available on its genetic transmission and inheritance. To obtain evidence on the genetic stability of this character, cell-width inheritance in Zygnema circumcarinatum Czurda was investigated. Measurements of cell width were made on 63 F1 clones produced by germinating zygospores of a known mating. The cell widths of 60 of these clones were distributed around the parental mean width of 23 µm in an interval between 21 and 28 µm. Three clones had significantly greater cell widths and were placed in two groups (30–31 µm and 33–34 µm). Since the culturing environment was identical for all clones, the clustering of all cell-width measurements around parental values is attributed to the influence of polygenic factors. It is proposed from the results of this investigation that cell width is not a valid taxonomic character for Z. circumcarinatum. Further, it is suggested that cell width should be questioned as a valid taxonomic character ... |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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