Re: What is tetraploid?
- To: "i*@egroups.com"
- Subject: Re: What is tetraploid?
- From: r*@dmv.com
- Date: Mon, 17 Jul 2000 08:53:12 -0400
> What is tetraploid? Please, if not a dumb question. Laureen
Laureen,
Every plant or animal has a standard number of chromosomes. It is an
even number because the chromosomes are paired. These are referred to as
diploids (the prefix di- meaning twofold or paired). In the animal
kingdom, extra chromosomes mean genetic defects. In the plant kingdom,
there is a phenomenon where the number of chromosomes doubles, resulting
in tetraploids (tetra- meaning fourfold). Tetraploidy can be induced
chemically, though the procedure can be very tricky and often kills the
plant. Tetraploids will demonstrate exaggerated traits, whether good or
bad. With careful selection, plants with more vigor, better or different
color, longer lasting flowers, and larger flowers can be had. This has
been particularly true with daylilies and Siberian irises, though it has
been tried with many plant species.
That is not a dumb question. I can assure you that there are other
people on this list who do not know, but are afraid to ask.
R. Dennis Hager
on Delmarva Zone 6-7
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