Date: Fri, 20 Oct 2000 15:11:11 +1100 From: Miguel de Salas <mm_de@postoffice.utas.edu.au> To: cp@opus.hpl.hp.com Message-Id: <aabcdefg3021$foo@default> Subject: Re: _Drosera_ hybrids
Dear Jan,
>Did you really do this experiment, and were the parents identified
>correctly?
When I say "when we cross..." I meant "when one crosses"
No, I have not crossed D. intermedia and D. rotundifolia, but considering
that D. x anglica (2n) is infertile, while in D. anglica (4n) fertility is
restored, leads one to believe that the chromosomes of the parent plants
are sufficiently distinct not to form bivalents during meiosis of the
diploid hybrid, and not to form multivalents in the tetraploid, which
again, would impair fertility, as sometimes happens with autotetraploids.
Have you ever seen or heard of a Drosera auriculata x D. peltata hybrid? As
a general rule, intermediate forms between these two species are not found
in the wild (hence their being considered separate species insted of
subspecies). However, I found one the other day in a mixed population of
the parent plants.
Best wishes,
Miguel de Salas
mailto:mm_de@postoffice.utas.edu.au
School of Plant Science,
University of Tasmania,
GPO Box 252-55, Hobart,
Tasmania, Australia, 7001.
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