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F6 hybrids was hybrid vs. non hybrid (was None)

Square Foot Gardening List - http://www.flinet.com/~gallus/sqft.html

In a message dated 99-07-02 03:44:51 EDT, you write:
<< Thanks for the expose on F1 and F2 hybrids.  One of our group posted
 notes about F6 hybrids - that had been unchanged through six
 generations.  I have not ever seen any packets of seeds that says F6. >>

     Well, you've probably run across some F6 and up hybrids and just didn't 
know it. Some of the popular heirloom varities we have now are just the 
result of an F1 cross, then careful seed selection of each succeeding 
generation....only the seeds from the most desirable plants are saved. At the 
"F6" stage, the former hybrid is stabilized and no longer a hybrid....it's a 
variety itself and will produce true to form. So, you've probably seen an F6. 
Seed companies just don't bother to tell you the history of, say, Golden 
Bantam corn on the package :).

<<However . . . I have noticed in recent years seeds labeled S1 hybrids -
usually pansies.  Underneath it says something about 'synthetic
hybrids'.
Anyone know what that is about?>>

     Nope. Checked all my catalogs and couldn't find a single S1 pansy. There 
are SE (sugar enhanced) and Sh2 (Supersweet hybrid) sweet corn varieties. 
These would probably qualify as "synthetic" hybrids since they've been 
genetically altered, specifically for sweetness and long-keeping qualities. 
What improvement do the S1 pansies claim to have? 

Lisa Viger


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