Date: Mon, 30 Oct 2000 07:40:24 +0000 From: jan.schlauer@uni-tuebingen.de To: cp@opus.hpl.hp.com Message-Id: <aabcdefg3158$foo@default> Subject: _D. schizandra_
Dear fellows,
> > I think it was Ivan who mentioned that he though D.
> > schizandra might be a hybrid between D.adelae and D. prolifera.
> If D. schizandra arose as a single hybrid of D. adelae and D. prolifera,
> which became tetraploid and had its fertility restored, thus becoming
> reproductively isolated from the parents (i.e. a different species), there
> need not necessarily be much variability, expecially if this occurred a
> while ago.
Sorry, but there is only little to reflect this nice theory in the
chromosome count. All three spp. of Proliferae do have the same count
of 2n=30 (in addition, one odd count of 2n=28 was reported for _D.
adelae_).
> Checking the ploidy (chromosome number) of D. schizandra and comparing it
> with D. adelae and D. prolifera might give some insight.
v.s.
Kind regards
Jan
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