North American Fruit Explorers mailing list at ibiblio

["Lon J. Rombough" <lonrom@hevanet.com>]

In at least some citrus, the apomictic seedlings are thornless, while the sexually produced seedlings have thorns.  I grew out seedlings of a Poncirus trifoliata x Pommelo hybrid and all were thornless.  The hybrid was one from Florida which had proven a dead end in breeding because it would produce nothing but apomictic seedlings.
-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. 
Grape pruning video: http://www.bunchgrapes.com/dvd.html View a short, low resolution clip here: http://www.youtube.com/watch?v=8Q58zFY0B1M
A video about The Grape Grower : http://cookingupastory.com/index.php/2008/04/18/the-grape-grower/

On Dec 9, 2009, at 4:41 PM, Lee Reich wrote:

I believe that they will produce apomictic seeds as you describe for mango, at least that's what I think citrus does. Apomictic seedlings also must go through a juvenile phase before beginning to bear fruit, just as sexual seedlings must.
 
Lee Reich, PhD
http://www.leereich.com/

Books by Lee Reich:
A Northeast Gardener's Year
The Pruning Book
Weedless Gardening
Uncommon Fruits for Every Garden
Landscaping with Fruit