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[nafex] Re: Meader persimmons
Thanks Lon for clearing it up on what turns out to be a more
complicated situation that one would think.
SE PA, zone 6
--- In email@example.com, "Lon J. Rombough" <lonrom@h...> wrote:
> Several years ago I went throught Jim Claypool's notes and used the
> to work out a theory of the inheritance of sex in American
> take into account the appearance of limbs of opposite sex flowers
on a tree
> (limbs of male flowers on female trees, etc.). For convenience, we
> to call ordinary persimmons as having XX for female and XO for
male, O being
> the plant equivalent of a Y chromosome. Though in truth I think
> much difference between the X and O, only a very few genes.
> Opposite sex types had at least one of those chromosomes with
> gene on it that coded for flowers of the opposite sex on the tree,
> were X' and O'. A tree that had X'X was a female that would have
> of male flowers. X'O was a male that would, in some cases, have
> seedless fruit on it. X'X' was a female that had a strong tendency
> produce male limbs, while X'O' was a male that would produce
> and normally seeded fruit. Now, with the X'O', it was possible to
> self-pollinate it and get trees that were O'O' and these,
> should be essentially perfect flowered types. However, we don't
> test crosses to verify that.
> What it boils down to, is that it should be possible to cross
> that produce perfect flowers and get some seedlings that produce
> perfect flowers, or at least enough to make them truly useful, not
> something that takes up space once pollination is done.
> I hope this makes sense to all as it takes a LOT of writing to
> re-explain the whole thing. I am hopeful of doing a book on
> persimmons - kind of a new version of "Persimmons for Everyone" and
> include it in that when/if I can find a publisher.
> -Lon Rombough
> Grapes, unusual fruits, writing, consulting, more, at
> >From: jhecksel@v...
> >To: firstname.lastname@example.org
> >Subject: Re: [nafex] Re: Meader persimmons
> >Date: Sat, Dec 30, 2000, 3:14 PM
> >Christopher Mauchline wrote:
> >> >The "downside" was that all seeds would produce female plants as
> >> >there was no "y" chromosome pollen produced.Just a thought.
> >> Would this be so for plants?
> >Doggone it. My wife warned me about putting "Aflict the
> >the signature.
> >Christopher, I just plain do not know. In this case, it is
> >read. I cannot say it is something I know to be a fact or that it
> >something that I tried. It is just that if I were going to fiddle
> >around and try to make Meader behave as if it were self fertile, I
> >mulch it to within an inch of its life and I would prune the tree
> >ensure that sunlight penetrated the canopy. Unless somebody else
> >egroup can suggest a better way. Who knows, maybe a foliar feeding
> >heavy in K before it pushes its flower buds is the trick? K can do
> >funny things during bud initiation.
> >>Reptiles (I think) don't have a "sex"
> >> chromosome (gestational temp often determines sex), birds have
> >> XX (and if I remember correctly the males are the XX). Only
> >> consistently are XX and XY (and even there they've recently
> >> genus of S. American mice that has XX females and XY Males and
> >> Females (and the XY Females appear to be "super moms").
> >> I'm just saying I'm not sure how it "works" for plants - I
> >> don't know, but it may not be a "no male's produced" situation.
> >> Chris Mauchline
> >> SE PA, zone 6
> > -Joe Hecksel
> > Eaton Rapids,