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Subject: North American Fruit Explorers mailing list at ibiblio
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- From: jim <jmc1@epix.net>
- To: nafex@egroups.com
- Subject: Re: [nafex] Seed Variation - Apples
- Date: Sun, 15 Oct 2000 12:29:37 +0000
Apples and other pome fruits do not breed true -- period. Apples are
generally
heterozygous for perhaps 5000 to 10,000 gene pairs; this makes for almost
infinite variability. Just to toss numbers around -- if you made the cross
Empire x Northern Spy, for example, out of 10,000 seedlings you might
reasonably
hope to have a dozen candidates that could compete with Empire -- and you
could
feel confident of 100% susceptibility to scab, powdery mildew and fire blight!
Neither do the stone fruits breed true, but because of many generations of
inbreeding, the odds are a lot better that from a thousand Cresthaven pits,
you
would get a few that would be close to (but not identical to) Cresthaven.
Jim Cummins
Geneva
Tom Olenio wrote:
> Hello List,
>
> Quick question on the variation from parent in apple seedlings.
>
> I have learned from this list that stone fruit seedlings will be true to the
> parent 80-85% of the time, but apple seedlings are not true to their parent
> tree.
>
> I have never seen a number as to to variation rate of apple seedlings to
> their
> parent. Is it 100%?
>
> Have they ever measured the types of changes that occur, or is totally
> random?
>
> Thank you.
>
> Tom
> --
> Thomas Olenio
> Ontario, Canada
> Hardiness Zone 6a
>
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-
[nafex] FW: Termites Go Hungry on Resistant Trees,
Lon J. Rombough, 10/12/2000
-
[nafex] Seed Variation - Apples,
Tom Olenio, 10/15/2000
- Re: [nafex] Seed Variation - Apples, jim, 10/15/2000
-
Message not available
- Re: [nafex] Ancient Apple Varieties, jim, 10/16/2000
-
[nafex] Seed Variation - Apples,
Tom Olenio, 10/15/2000
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