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Yellow leaves

Some time ago Ran remarked that possibly the tardiana series has 
some hidden yellow genes. Lets try to explain. Yellow is, with all 
hostas, a dominant character That is to say, only a single gene 
suffices to make a plant yellow Even 'worse' two genes never come 
together as that is lethal. So it is impossible to have a pure yellow 
strain Always around  50 % green will appear. So a hosta can 
never have a hidden yellow gene. The occasional yellows one get 
from beeseed of green or blue plants are due to stray pollen of a 
yellow plant, never to a ''hidden' yellow gene ( see my article in the 
Hosta j. about this subject)
Ben J.M.Zonneveld
Clusius lab pobox 9505
2300 RA Leiden
The Netherlands
Fax: 31-71-5274999

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