North American Fruit Explorers mailing list at ibiblio

["Dr. Chiranjit Parmar" <parmarch_mnd@dataone.in>]

Trifoliate orange (Poncirus trifoliata), deciduous citrus, is also known to 
impart cold hardiness in scions budded on it.  This is an old established 
fact and has been proved in many rootstock trials.

Vegetattive propagation is also in improvement in the field of fruit growing 
made by man over the years.  That is why it replaced the conventional 
seedling orchards. Efforts are in progress even for further refinements and 
the development of clonal rootstocks is the result of those efforts.  I fail 
to understand why we have started talking about seedling trees.

Dr. Chiranjit Parmar
www.fruitipedia.com

-----Original Message----- 
From: Lee Reich
Sent: Saturday, November 24, 2012 11:54 PM
To: nafex mailing list at ibiblio
Subject: Re: [nafex] Charles and grafting

Here is but one example of rootstock increasing cold hardiness over 
own-rooted plant:

Miller et al. found that rootstock cultivars affect cold hardiness of scions 
grafted to them. For example, grafted ‘White Riesling’ was significantly 
hardier than the own-rooted vines...Miller, D.P., G.S. Howell, and R.K. 
Striegler. 1988b. Cane and bud hardiness of own- rooted white Riesling and 
scion of White Riesling and Chardonnay grafted to selected rootstocks. Amer. 
J. Enol. Viticult. 39:60-86.

Lee Reich, PhD
Come visit my farmden at http://leereich.blogspot.com/
http://leereich.com/

Books by Lee Reich:
A Northeast Gardener's Year
The Pruning Book
Weedless Gardening
Uncommon Fruits for Every Garden
Landscaping with Fruit
Grow Fruit Naturally

On Nov 24, 2012, at 12:49 PM, Alan Haigh wrote:

> Charles wrote,  "For the scientific approach, I have continued my
> experimental procedure with
> the seedlings and developed seedlings to out perform any grafted tree
> available for our climatic zone"
>
> Charles, I am not arguing about the success of your breeding strategies
> only against the certainty of your conclusions- the how can be correct 
> when
> the why is wrong.
>
> To my thinking, a scientific approach to determine if a grafted tree is
> less cold hardy than a similar seedling tree would be to start with a
> seedling tree that has proven its cold hardiness.  You would take a 
> hundred
> seedlings of that variety and graft half of them with scion wood of the
> proven tree and leave the other fifty as the control.  Then you could
> compare their hardiness over the next twenty years.
>
> While the experiment would be imperfect for a few reasons it would provide
> a far more accurate manner of testing your opinion, and, I think, could be
> correctly described as a scientific approach.
>
> Without a control your logical conclusions drawn from years of experience
> are opinions that may be true but don't represent a scientific approach, 
> in
> my opinion.  Of course, this site is mostly about discussing the personal
> experiences of various fruit fanatics and that's what I come here for.
>
> What got me started on this train of thought was the original claims of
> this topic- that grafted trees create a product that is dangerous to human
> health by a man who I think stated that he actually left the country
> because he was so upset that his idea isn't widely embraced here.
>
> The main basis of his belief seemed to be that he had health problems that
> quickly cleared up when he stopped eating fruit from grafted trees.   I
> don't blame him for deciding not to eat grafted tree fruit but I need a 
> lot
> more evidence than that to throw out all the advantages provided by
> grafting.  Whether these advantages pertain to cold zone nut production, I
> have no idea, but it still seems logical that if you ever find a really
> standout tree for quality, cold hardiness, and productivity you will end 
> up
> trying to graft it onto other trees.
>
> Arriving at such a standout tree has historically often taken centuries as
> can be seen by those trying to obtain the qualities of selected Kakis in a
> native American persimmon.  How many generations of grafters/seedling
> growers were required to turn an Asian pear into a Bosc?
>
> That said, I wish you'd explain your technique of getting your seedling
> nut trees to produce within 3 or 4 years.  I know of a variety of ways to
> accelerate fruiting of the species I manage (scoring, branch spreading,
> root pruning, pruning out excessively vigorous branches, etc) but am
> curious if you've discovered something new that you are using on nut 
> trees.
> __________________
> nafex mailing list
> nafex@lists.ibiblio.org
> aubscribe/unsubscribe|user config|list info:
> http://lists.ibiblio.org/mailman/listinfo/nafex
> message archives
> https://lists.ibiblio.org/sympa/arc/nafex
> Google message archive search:
> site: lists.ibiblio.org/pipermail/nafex [searchstring]
> nafex list mirror sites:
> http://nafexlist.blogspot.com/
> http://groups.google.com/group/nafexlist
> https://sites.google.com/site/nafexmailinglist
> Avant Geared  http://www.avantgeared.com

__________________
nafex mailing list
nafex@lists.ibiblio.org
aubscribe/unsubscribe|user config|list info:
http://lists.ibiblio.org/mailman/listinfo/nafex
message archives
https://lists.ibiblio.org/sympa/arc/nafex
Google message archive search:
site: lists.ibiblio.org/pipermail/nafex [searchstring]
nafex list mirror sites:
http://nafexlist.blogspot.com/
http://groups.google.com/group/nafexlist
https://sites.google.com/site/nafexmailinglist
Avant Geared  http://www.avantgeared.com