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the results of ( intended) crosses

An intended cross is not always the obtained result,  that is often 
the problem with the parents  of plants. People make a cross and 
then assume the resulting seedlings are that cross Especially with 
plants difficult to cross like plantaginea and many hybrids there is 
always a fair chance that a stray pollen was around Especially if 
you have only a few seeds one must be suspicious. In several 
cases the parents indicated in the registration are the INTENDED 
cross but the results clearly indicate that a stray pollen was around 
Good examples are if two green/blue plants are crossed and the 
result is a yellow offspring. ( yellow is a dominant character so 
must be visible in one of the parents. ). Another is when  a  a good 
species say hypoleuca is selfed and the resulting seedling is 
different from hypoleuca.
Ben J.M.Zonneveld
Clusius lab pobox 9505
2300 RA Leiden
The Netherlands
Fax: 31-71-5274999

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