North American Fruit Explorers mailing list at ibiblio

["Ed Fackler" <efackler@woh.rr.com>]

Ginda:

     Viruses are transmitted in various ways other than traditional
grafting/budding and
pruning.  Any sucking incest can likely transmit most viruses with
leafhoppers
being likely the most successful.  Also nematodes can transmit viruses by
feeding on roots.
    While apparently not a problem with apple orpear, some viruses are
transmitted via pollen
 or the pollen is a vector in stone fruits.
     Also, naturally occurring root grafts (roots of near by apples, for
example)
can transmit viruses.
     And of course that is the beauty if the older rootstocks.  Enough
time/exposure has
occurred to learn which of those are tolerant and those that are not.

ed, central Ohio--snowing.


-----Original Message-----
From: nafex-admin@lists.ibiblio.org
[mailto:nafex-admin@lists.ibiblio.org]On Behalf Of list@ginda.us
Sent: Sunday, January 26, 2003 8:25 AM
To: nafex@lists.ibiblio.org
Subject: Re: [NAFEX] Geneva 16


How do trees catch viruses, anyway?  I know they can get them from a
graft, but there must be a natural way viruses spread, or we wouldn't
have so many of them.

I wouldn't want a rootstock that's extremely susceptible to viruses in
my backyard.  It might be okay for a commercial grower who plans to
take out many of his trees from time to time to keep up with the latest
fad, and so doesn't mind that his trees are short-lived.  But I don't
have many trees, and can't give them idea conditions, so they grow
rather slowly.  Once I get something I like, I prefer if it doesn't
just drop dead unexpectedly because it picked up some bug.

Ginda Fisher
eastern MA, zone 6

On Saturday, January 11, 2003, at 07:31  AM, Dr. Ethan Natelson wrote:

> Dear Mike,
>
>      In the lead article of the most recent edition of Compact Fruit
> Tree,
> the publication of the International Dwarf Fruit Tree Association, the
> authors indicate the advantages of G-16 over M 9 are better fireblight
> resistance and slightly better yield.  The downside is the extreme
> sensitivity to latent viruses in the grafted scion which can abruptly
> kill
> the tree.  I have had that happen here in Houston.  Thus, grafted wood
> must
> be virus free.  They also claim that it is not yet clear if G-16 is
> cold hardy.
>
>                                   Regards, Ethan
>
> At 12:15 AM 1/11/03 -0500, you wrote:
>> I've been poring over catalogs trying to figure out this year's order
>> and
>> just when I thought I would order trees on Bud 9 my friend suggested
>> that
>> Geneva 16 might be a superior rootstock.  Any thoughts on this?
>>
>> Mike Levine
>> Ann Arbor, MI
>> zone 5b
>>
>>
>> _______________________________________________
>> nafex mailing list
>> nafex@lists.ibiblio.org
>> Most questions can be answered here:
>> http://lists.ibiblio.org/mailman/listinfo/nafex
>> File attachments are accepted by this list; please do not send binary
> files, plain text ONLY!
>> Message archives are here:
>> https://lists.ibiblio.org/sympa/arc/nafex
>> To view your user options go to:
>> http://lists.ibiblio.org/mailman/options/nafex/XXXX@XXXX (where
>> XXXX@XXXX is
>> YOUR email address)
>> NAFEX web site:   http://www.nafex.org/
>>
>
> _______________________________________________
> nafex mailing list
> nafex@lists.ibiblio.org
> Most questions can be answered here:
> http://lists.ibiblio.org/mailman/listinfo/nafex
> File attachments are accepted by this list; please do not send binary
> files, plain text ONLY!
> Message archives are here:
> https://lists.ibiblio.org/sympa/arc/nafex
> To view your user options go to:
> http://lists.ibiblio.org/mailman/options/nafex/XXXX@XXXX (where
> XXXX@XXXX is
> YOUR email address)
> NAFEX web site:   http://www.nafex.org/
>

_______________________________________________
nafex mailing list
nafex@lists.ibiblio.org
Most questions can be answered here:
http://lists.ibiblio.org/mailman/listinfo/nafex
File attachments are accepted by this list; please do not send binary files,
plain text ONLY!
Message archives are here:
https://lists.ibiblio.org/sympa/arc/nafex
To view your user options go to:
http://lists.ibiblio.org/mailman/options/nafex/XXXX@XXXX (where XXXX@XXXX is
YOUR email address)
NAFEX web site:   http://www.nafex.org/