Plants of hybrid origen

Mark Brown
Mon, 14 Jun 2010 23:34:12 PDT
Le 14/06/2010 19:18, Donald Barnett a écrit :
> Hello,
> Taxonomy question: if a species of plant is of hybrid origen and the plants
> are producing true uniform plants from seed production would it still be
> considered a hybrid or its own species? In the location of such hybrids they
> make up 95% or more of the plants in the area and one of the parents is no
> longer found there. Any help would be much appreciated.
> Thanks,
> Donnie
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Dear All,
As I understood things a hybrid can become a species when chromosomes 
double to produce a fertile entity.
Are there not more then a few accepted fern species that illustrate this 
Certainly from an evolutionary point of view quite a few species have 
arisen like this.
But then apomixy allows new species to arrise with every least little 
If you Opuntia is multiplying only vegetatively then it is suspect.But 
you say that it grows without problem and uniformly from seed.
So that rules out a clone I would think.
It is true that genetic variation is to be expected in a hybrid swarm.
But it is not a hard and fast rule if there is not much genetic 
variation in the parent species, and that they are similar to begin with 
would rule out too much variation.
Evidently this plant is very stable.
And I fully understand why you want a name for it.
Best regards,

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