North American Fruit Explorers mailing list at ibiblio

[Louis Pittman <lucky.pittman@murraystate.edu>]

What Matt said - I've heard the same line, that 'no resistant pure
butternuts exist' from experts/researchers in TN/MO/IN.
As to the hybrids, the future is already here; there are several 'butternut'
clones which have been propagated in the nursery trade for decades, which
have been shown by DNA analysis to be hybrids with Japanese walnut &/or its
budsport the heartnut - and appear to be resistant to the butternut canker
disease.  Bountiful and Kenworthy are two that come to mind, but there are
others as well.

Lucky

On Sun, May 1, 2011 at 6:06 AM, Matt Demmon <mdemmon@gmail.com> wrote:

> Steve, at least here in Michigan, the experts have been saying that there
> are pretty much no resistant butternuts. All the 'butternuts' that they've
> found that are surviving are actually hybrids with Japanese walnut
> (heartnut). Some hybrids look indistinguishable, at least to me, from
> butternut. But all of the straight species is being wiped out here.
>
> -matt
> z5 se MI
>
> On Sat, Apr 30, 2011 at 10:22 PM, Steven Covacci <filtertitle@aol.com
> >wrote:
>
> > Group:
> >
> >
> > I bought a vigorous butternut/white walnut seedling today.  I just read
> up
> > on the disease susceptibility in white walnut.  There is a 300+ historic
> > white walnut that near me.  It looks in good shape, although has a large
> > cavity in it's trunk at the base, but still doing well.  Does this mean
> that
> > this is a tree of unusual disease-resistance?
> >
> >
> > Should I graft a disease-resistant scion/cultivar unto it?
> >
> >
> > Are there disease-resistant clones?
> >
> >
> > Thanks,
> > Steve NJ 7a
> >
> >
> >
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