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RE: colchicine

> Thanks Rick--- But what is a diploid and a tetraploid? And 
> their relationship
> to Hosta?

The "normal" number of chromosomes in a cell is called diploid (two sets).
Sperm or egg are haploid (one set).  

Colchicine doubles the number of chromosomes, taking a cell from diploid to
tetraploid (four sets).  It does this by interfering with the intracellular
"skeletal" mechanisms that normally cause the chromosomes to split and
separate during cell division.  

H ventricosa is a natural tetraploid.  This happens all the time during the
evolution of species.  

In hemerocallis, the large heavy-textured flowers are almost invariably from
tetraploid plants.  Will something similar happen with tet hostas?  I don't

Rick Grazzini
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