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nafex - Re: [nafex] Is my pecan seedling a hican?

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  • From: "Dr. Lucky Pittman" <lpittman@murraystate.edu>
  • To: "'nafex mailing list at ibiblio'" <nafex@lists.ibiblio.org>
  • Subject: Re: [nafex] Is my pecan seedling a hican?
  • Date: Tue, 10 Sep 2013 13:07:16 -0500

Betsy,
As Dr. O'Barr indicated, pecanXhickory hybridization doesn't happened all
that frequently - and differences in ploidy *may* preclude some species from
crossing. Pecan, shellbark, shagbark are diploid and will hybridize, but
mockernut is tetraploid(not sure about pignut, but I'm thinking it's also
tetraploid), and likely won't cross naturally with the diploids.
Most years, hickories are earlier than pecans, so potential for
cross-pollenation is slim.

Dr. Bill Reid, the KSU pecan specialist, posted to his blog this past
spring, that weather conditions were such this year that pecans and
hickories in the KSU pecan plantings at Chetopa bloomed concurrently, and
that it might be a year in which hican offspring might well be in evidence
in the next crop of seedlings.
Scroll down to Apr 4, 2013:
http://northernpecans.blogspot.com/2013_04_01_archive.html

Lucky

-----Original Message-----
From: nafex-bounces@lists.ibiblio.org
[mailto:nafex-bounces@lists.ibiblio.org] On Behalf Of Elizabeth Hilborn
Sent: Saturday, September 07, 2013 9:30 AM
To: nafex mailing list at ibiblio
Subject: [nafex] Is my pecan seedling a hican?


I planted pecans from my trees and many germinated and are growing up quite
well, but the leaf shape varies among seedlings. For example, some leaflets
are wider than others. I have wild pignut and mockernut pecans in my area.
How do I determine if I have pecan or hican seedlings? Can I determine this
by phenotype (at this point that means leaf shape) alone?

Betsy Hilborn
7a NC
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