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Re: Hybridizing

  • Subject: Re: [IGSROBIN] Hybridizing
  • From: maria guzman <mirror@3RIVERS.NET>
  • Date: Fri, 12 Apr 2002 21:56:21 -0600

You are right about P. peltatum/P. x peltatum.  More than that I don't
know.  My "reference" consists solely of this morning's letter from Michael
Vassar.  I am new to the subject and have as much to learn as anybody.


>Most of the chromosome count info I have agrees with what you e-mailed,
>except as follows:
>P. grossularoides- I have literature that states that it has a basic
>chromosome number of 19. While I assume this plant is diploid , 2n=38, it
>could be tetraploid. Can you check your reference.
>P. peltatum - All I have on the species is 2n=18. While hybrid ivys do exist
>in tetraploid form, I don't think that the garden ivy geranium is considered
>a true species. Can anyone help? Isn't it P.x peltatum for the garden
>P. zonale - again , I have 2n=18. I do not have a source for the species
>zonale being tetraploid (2n=36) also. Sounds to me that someone confused
>zonal hybrids with P. zonale.
>P. tomentosum - the only literature I have is that it is tetraploid- 2n=44.
>Haven't seen a source claiming some plants are diploid (2n=22).

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