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  Philodendrum DNA
From: "zonneveld" zonneveld at rulbim.leidenuniv.nl> on 2001.12.18 at 16:08:00(7938)
I dont know if somebody did it already But.. I am willing to measure
the total amount of DNA of "both Philodendrum selloums" To see I
can find any difference just send me any fresh greenery or a root
Ben J.M.Zonneveld
Clusius lab pobox 9505
2300 RA Leiden
From: Durightmm at aol.com on 2001.12.18 at 20:48:24(7945)
I have a ka P. selloum and a ka P. bipinnataphylum over 30 years old that will preclude tissue culture influences of which I will send samples as requested. Perhaps if others respond accordingly there will be a larger population from which to work offering a chance of a more definitive result. J

From: "Julius Boos" ju-bo at email.msn.com> on 2001.12.19 at 14:57:23(7949)
Whoever does collect and send material for testing, TRY to take a guide
from Eduardo`s letter to us of 12/14, you must try to get material not just
from two slight variations of the species P. bipinnatifidum, but perhaps of
two of the 'good' species that in the past have been considered the same.
Eduardo points out a good feature of at least one seemingly good species
that was 'buried' in P. bipinn., this is P. mello-barretoanum, its rhizome
will have the 'spines' developed to to the point of being thorns. Another
is P. lundii. Bear in mind that there were many variations in the leaf
divisions of P. bipinnatifidum in plants grown from seed, so please look for
OTHER differences, look and compare the female flowers AND the rhizome, or
else Ben (below) may end up with just two or more variations of P.
bipinnatifidum that will test to be identical in their DNA.


From: Durightmm at aol.com on 2001.12.19 at 15:59:07(7952)
Trying to identify any plant on line is tenuous and almost nonproductive given the high variabilities of all species. No one so far has mentioned the selfheading characteristic of the ka P. selloum and ka P. bipinn. In my case the ka P. bipinn climbs and is mono green with no distinctive leaf or petiole characters. While the latter was ID'd by botanists there is no way of verifying it. My point is how will anyone know who is P. selloum and who is not? How can a dna be helpful when there is no base for determining a species. Would it not be like comparing apples and oranges? J.

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