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Studies on theStellaria longipes complex (Caryophyllaceae): Isozyme variability and the relationship betweenStellaria longipes andS. longifolia

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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.

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Cai, Q., Macdonald, S.E. & Chinnappa, C.C. Studies on theStellaria longipes complex (Caryophyllaceae): Isozyme variability and the relationship betweenStellaria longipes andS. longifolia . Pl Syst Evol 173, 129–141 (1990). https://doi.org/10.1007/BF00940858

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Key words

  • Angiosperms
  • Caryophyllaceae
  • Stellaria longipes
  • S. longifolia
  • Isozyme variability
  • allozyme analysis
  • allopolyploidy
  • population differentiation
  • genetic variation