Re: colchicine
Thanks again Rick
At what level of a hostas growth is this experimenting with colchicine taking
place (pods, seeds, seedlings or mature plants or in TC lab)?
Ray Wiegand z5
Mentor, Ohio
Rick Grazzini wrote:
> > 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
> know.
>
> Rick Grazzini
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