- Subject: Re: [IGSROBIN] Hybridizing
- From: "Roth, Barry" <BRoth@BROBECK.COM>
- Date: Mon, 22 Oct 2001 15:11:44 -0700
It is difficult to cross a diploid with a tetraploid because they have
different chromosome numbers. A tetraploid variety has twice the number of
chromosomes of a diploid variety of the same species. At fertilization,
those extra chromosomes of the tetraploid parent don't find their "mates"
from the other parent.
It is said that tetraploid P. x hortorum may sometimes generate a small
amount of diploid pollen and this may account for some past reports of
successful crossings between diploid and tetraploid varieties. In several
years of hybridizing P. x hortorum, I was never able to make such a cross
From: Sandy Connerley [mailto:sandym@NORTHCOAST.COM]
Sent: Friday, October 19, 2001 8:11 PM
Subject: [IGSROBIN] Hybridizing
RE: Pelargonium x hortorum
If you hybridize a diploid and a tetraploid, is it possible to get the
traits (like flower) of a tetraploid, but end up with a diploid (want it
for the small size - hoping for dwarf)?
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