[nafex] Re: Tip Bearers

Lon J. Rombough lonrom at hevanet.com
Mon May 7 12:51:10 EDT 2001


On the quality of columnar apples.  First, remember that the original
columnar type was a sport of McIntosh and all columnar types have been bred
from that.  Second, the commercially available columnar apples were bred in
England, so they are adapted to that climate.  Ironically, it is very easy
to breed for the columnar growth habit - cross it with a regular apple and
50% of the seedlings will be columnar, and you can pick them out at a very
young age.  Of course the odds of getting one with good fruit may not be
large, but selecting the growth habit first means you KNOW you have that no
matter what.  It's a project that amateurs everywhere could take on with
less space needed than regular apple breeding.
-Lon Rombough
Grapes, writing, consulting, more, plus word on my grape book at
http://www.hevanet.com/lonrom  

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----------
>From: "Doreen Howard" <doreenh at ticon.net>
>To: <nafex at yahoogroups.com>
>Subject: Re: [nafex] Re: Tip Bearers
>Date: Mon, May 7, 2001, 9:22 AM
>

>That's interesting about the columnar apple trees producing poplar type
>growth of grafted varieties.  I, too, planted columnar apples, because there
>was no space for even two dwarf apple trees.  We got two apples off the
>trees before moving north.  And, I agree with Roger Miller that the flavor
>was nothing great.  The apples were flat and mealy.  What varieties did he
>graft on to the column trees?  If the flavor and quality holds true on the
>grafted varieties, the poplar-like growth would be very useful for training
>as an espalier, I'd think.  Hmmm.  Something to experiment with!
>Doreen Howard
>
>-----Original Message-----
>From: jhecksel at voyager.net <jhecksel at voyager.net>
>To: nafex at yahoogroups.com <nafex at yahoogroups.com>
>Date: Monday, May 07, 2001 11:09 AM
>Subject: Re: [nafex] Re: Tip Bearers
>
>
>>Well, Chris, that is a mystery.
>>
>>At the risk of talking around your question and not answering it....
>>
>>One factor that is not discussed very often is rootstock and interstem
>>influence on tree shape.
>>
>>I visited Roger Miller's place (in Eaton Rapids) on Saturday.  He
>>showed me several trees where he grafted several apple cultivars on
>>"column" type apples.  He had fruited out the column apples and was
>>not impressed with the quality, so he top-worked several of them.
>>
>>The top-worked varieties grew like Lombardy poplar trees....much like
>>the form of the column trees.
>>
>>My guess is that the column "interstem" produces auxins (growth
>>regulators) that inhibit side shoot development and make narrow crotch
>>angles.  The textbooks identify the growing point as the source of the
>>growth regulators that inhibit the development of side buds.  Pinch
>>out the growing tip and the tree will "feather".  Obviously, growth
>>regulators of various sources are produced in all parts of the tree.
>>
>>Best regards, Joe
>>
>>>
>>> Yellow Newtown is listed as a Semi-Spur.
>>>
>>> Hmmm,  is this different performance at a different climate?  Or
>>> something else?
>>>
>>
>>
>>
>>
>>
>>
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