HYB: Fertility
- To: Multiple recipients of list <i*@rt66.com>
- Subject: HYB: Fertility
- From: S* M* <7*@compuserve.com>
- Date: Sat, 11 Apr 1998 16:22:49 -0600 (MDT)
Dennis Kramb wrote:
> So do you suggest/recommend that such crosses not be made? Or is it
just a
> warning for someone not to get their hopes up if they attempt it? Wou=
ld
> the seedlings inevitably be non-fertile (or barely fertile), or could =
it
> result
> in a fully fertile cultivar?
Merely a caution against undue
optimism. I've made many such
crosses while exploring the =
possibilities inherent in arilbreds.
You COULD get a fully fertile
cultivar. You could also win a
ten-million dollar lottery....
> An arilmed x arilmed cross produces nothing but arilmeds? Or could yo=
u
get
> some offspring nearly 100% aril and some nearly 100% TB?
LURKER ALERT: =
This is another complicated question!
First, we much determine what you mean
by arilmed. =
If you mean the fully fertile AADD-type
balanced tetraploids Tom discussed
earlier.... Yes, you should expect their
offspring to constitute a fertile family.
But there aren't very many of them.
Most often, however, the term is used
for the offspring of an aril and median.
These are usually ABD-type triploids and
all I've tried have proved stubbornly infertile.
Theoretically, these could be crossed with
AADD-type cultivars but I haven't had the
requisite bloom to these this theory.
If you're using the term more generally,
to include ABBD-type arilbredmedians,
it gets really complicated. I've found
this to be a difficult, but not impossible,
cross to make. The majority of the
seedlings resemble the parents, but
there are also some very large flowers
on short stalks and some small flowers
on TB-size stalks. Nothing so far that
remotely resembles an aril or TB.
Sharon McAllister
73372.1745@compuserve.com
