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Studies on theStellaria longipes complex (Caryophyllaceae): Isozyme variability and the relationship betweenStellaria longipes andS. longifolia |
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| Authors: | Q Cai S E Macdonald C C Chinnappa |
| Institution: | (1) Department of Plant Science, Macdonald College of McGill University, Ste. Anne de Bellevue, M9X ICO Quebec, Canada;(2) Department of Forest Science, University of Alberta, T6G 2HI Edmonton, Alberta, Canada;(3) Department of Biological Sciences, University of Calgary, T2N 1N4 Calgary, Alberta, Canada |
| Abstract: | Genetic variation within and the relationship betweenStellaria longipes Goldie andS. longifolia Muhl. were studied. Ten enzyme systems were assessed in eight natural populations ofS. longipes (25 loci) and three ofS. longifolia (20 loci) using starch and polyacrylamide gel electrophoresis. Patterns of population differentiation corresponded to geographic distance. There was no evidence that polyploidS. longipes had greater electrophoretic variability than diploidS. longipes. The isozyme data confirmed extensive population differentiation in these species and, within that context, a relatively close relationship betweenS. longipes andS. longifolia. It was postulated that diploids of these two species might be the progenitors of tetraploidS. longipes. |
| Keywords: | Angiosperms Caryophyllaceae Stellaria longipes S longifolia Isozyme variability allozyme analysis allopolyploidy population differentiation genetic variation |
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