Re: [Fwd: Re: Tets and colchicine (touching several bases)]
- To: Multiple recipients of list <i*@rt66.com>
- Subject: Re: [Fwd: Re: Tets and colchicine (touching several bases)]
- From: A* W* <a*@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
awheele2@abacus.bates.edu
