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Re: [Fwd: Re: Tets and colchicine (touching several bases)]

  • To: Multiple recipients of list <iris-l@rt66.com>
  • Subject: Re: [Fwd: Re: Tets and colchicine (touching several bases)]
  • From: Andrew Wheeler <awheele2@abacus.bates.edu>
  • Date: Wed, 6 May 1998 09:46:06 -0600 (MDT)

> >   I am under the understanding that many IB's are "triploid".  They are
> > marginally fertile, but I beleive this is because both parents do not
> > have the same base number of chromosomes originally.  TBs are tets,
> > SDB's are dips, but SDBs do not have half the number of TB chromosomes,
> > since they are different species.
> Andrew,
> SDB's are NOT diploid.  Most are decendants of I. pumila X Tall
> Beardeds.  Both are tetraploids.  See page 165 of the WOI (World of
> Iris).

Ye, right, I was failing to remember the amphidiploid explanation for
IB  infertility and inadvertantly confused it with triploidy.  Thank you
for the correction.
Andrew Wheeler

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