Hybridizing
- Subject: [IGSROBIN] Hybridizing
- From: E* O* M*
- Date: Fri, 12 Apr 2002 16:55:02 EDT
Maria-
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
varieties?
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).
Ed
