[NAFEX] 60 vs 90 chromosomes?
Lon Rombough
lonrom at hevanet.com
Thu Dec 2 18:09:16 EST 2004
Most named varieties of cultivated American persimmons are the 90
chromosome race. Ennis Seedless is thought to be a 60 chromosome type.
I haven't seen any proven 60 chromosome types, but the are said to
look quite similar, though leaves may be smaller and thinner and have
no pubescence on them, and the fruit is likely smaller. Certainly, the
Ennis I have, assuming it really is a 60 chromosome type, is like that.
=Lon Rombough
Grapes, writing, consulting, my book, The Grape Grower, at
http://www.bunchgrapes.com Winner of the Garden Writers Association
"Best Talent in Writing" award for 2003.
On Dec 2, 2004, at 12:20 PM, Lucky Pittman wrote:
At 01:53 PM 12/2/2004 -0500, Jerry wrote:
Be sure the understock is 90 C virginiana as 60 C virginiana keep
their leaves well after the 90 chromosome. I can supply seed. These
trees should harden off early.
Jerry, Lon, or anyone else,
Is there a simple way to determine if you have 60 or 90 chromosome
races?
Seems like Don Compton intimated that the Ohio River was a 'dividing
line', of sorts, between the 60s & 90s, but I may have misunderstood.
I usually grow my own seedlings from seed collected from a tree just
up the street from my office, which I've designated '816' (the street
no.); I suspect that it's probably Early Golden or Meader, but until my
own graft of it and EG & M fruit out in my orchard so that I can
compare them in close proximity, I can't be sure that that is the
case.
I presume that if it is Early Golden or Meader, it's a 90?
Lucky_______________________________________________
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