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Speciation and hybridisation in North American quillworts

Published online by Cambridge University Press:  05 December 2011

W. Carl Taylor
Affiliation:
Botany Section, Milwaukee Public Museum, Milwaukee, Wisconsin 53233, U.S.A.
Neil T. Luebke
Affiliation:
Botany Section, Milwaukee Public Museum, Milwaukee, Wisconsin 53233, U.S.A.
Mary B. Smith
Affiliation:
Botany Section, Milwaukee Public Museum, Milwaukee, Wisconsin 53233, U.S.A.
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Synopsis

Species of Isoetes in northeastern North America may have evolved through hybridisation and allopolyploidy. Evidence for natural hybridisation was obtained from overlapping distribution patterns, abortive and polymorphic spore formation, chromosome numbers ranging from diploid to decaploid, and additive enzyme electrophoresis profiles. The ease with which hybrids form in culture supports the hypothesis that natural hybrids occur and that hybridisation could be involved in the evolution of new species.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 1985

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References

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