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Re: Re: HYB: self incompatibility (was PHOTOS striped standard MTB see...

  • Subject: Re: Re: HYB: self incompatibility (was PHOTOS striped standard MTB see...
  • From: ChatOWhitehall@aol.com
  • Date: Tue, 2 Jun 2009 08:05:02 EDT

In a message dated 6/1/2009 9:36:07 PM Eastern Daylight Time,  
lmann@lock-net.com writes:

don't  know if it's the right system for bearded irises, but I've read 
that in  some other plants, the pollen won't grow down the styles if it 
has an  incompatibility gene that matches one of the incompatibility 
genes that  the pod parent has. The plants own pollen would always have a 
match and so  would always be not-compatible. Offspring would have at 
least half of  their pollen matching (and so those pollen grains would be 
incompatible),  sometimes all would be incompatible. This system helps 
ensure that  outbreeding to unrelated irises will occur.

In some irises, self-incompatibility arises at least in part from the  
plant's own pollen and own stigmatic lip simply not being ready  simultaneously, 
a factor which conceivably may, if only in part, be  genetically 
I am reliably informed this is the case with certain Juno  species, whose 
primary mode of self-perpetuation, as it were, is bulblets,  rather than 
Anner Whitehead
Richmond VA USA
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