[NAFEX] hybrid persimmons

Lon J. Rombough lonrom at hevanet.com
Wed Dec 12 19:45:47 EST 2007


I read up on the Russian methods years ago.  "Mentoring" usually meant  
grafting the male parent on the female tree, or vice versa.  In this  
case, it probably means they used the female parent as rootstock for  
the male, the male parent as rootstock for the female, then made the  
cross that way.   Supposedly, the female parent as rootstock would have  
affected the male on it so that the pollen would be more biochemically  
compatible.  At the same time, grafting the female parent on the  
species being used as the male would make the female more receptive to  
that species' pollen.   That way, the pollen from the treated male  
would be more likely to be able to fertilize the treated female.
Or, Virginiana on kaki used to pollinate a kaki grafted on virginiana.
-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.
For even more grape lessons, go to  http://www.grapeschool.com
For all other things grape,   http://www.vitisearch.com

On Dec 12, 2007, at 2:35 PM, Jwlehman at aol.com wrote:

  It was written in Russian at the Yalta station where Rosseyanka was  
bred, it was achieved by "Many years double Mentor."  When I asked what  
that meant they didn't know and the author had died years before. Also  
it was recorded as Rosseyanka 18 giving me the idea there were several  
hybrids were achieved but #18 was the best. I've not been able to  
confirm that either.  

  One method used to hybridize difficult species is doubling the  
chromosomes using colchicine. If increasing the sets of chromosome to 4  
makes it easier, why don't persimmon hybridize very easily as they have  
3 sets of chromosomes?  Go figure!

  Jerry



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