North American Fruit Explorers mailing list at ibiblio

[Jwlehman@aol.com]

In a message dated 11/22/2005 3:05:41 PM US Eastern Standard Time, mauch1@aol.com writes:
 
> We tend to think of sex being XX and XY related,  but not all 'higher' animals work that way.  If I have my  facts write, birds are XX and XZ and the females are
>  the XZ.  Turtles sexuality is determined by temperature at incubation.  


In trees the sex chromosomes are refered to as X & O. Have read why but don't remember as it isn't important at our level. Diploid plant males are XX and females XO. So the hexaploid persimmon male would have six X chromosomes and the females three X and three O chromosomes. 

Here comes guess work. That might explain females putting on male flowers having 3 X's. And why w/o any O chromosomes the males don't put on perfect flowers, only semi female hence perfect flowers. But this still doesn't explain Szukis flip flopping like it does. 

OK Lon, enlighten us out here. 

Jerry