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Bigeneric/intergeneric vs. interspecific

Posted by christinmk z5b eastern WA (My Page) on
Mon, May 13, 13 at 15:25

So I was looking up the term “interspecific hybrid” awhile back and a couple sites commented that it doesn’t always have to be two species within the same genera, but different species of different genera. Wouldn’t that make it a bigeneric/intergeneric plant though?! Or do you apply both terms to such a plant, meaning if the offspring was a result of crossing two species of different genera it would be a bigeneric AND interspecific hybrid?

Since I am here... what is the reason some genera and/or species can cross and others can’t?? Is it Chromosome compatibility or something? I’m not knowledgeable in this area whatsoever, so the more dumbed-down the answer the better, lol. ;-)
Thanks much!
CMK


Follow-Up Postings:

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RE: Bigeneric/intergeneric vs. interspecific

An intraspecific hybrid is the product of a cross between two members from within the same species.

An interspecific hybrid is the product of a cross between different species within the same genus.

An intergeneric hybrid / bigeneric hybrid is the product of a cross between members of different genera from within the same family.
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The answer to your second question could be quite complex, depending on the depth you wanted the issue addressed. But yes, chromosome compatibility, or lack thereof, is the major factor.


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RE: Bigeneric/intergeneric vs. interspecific

Oh wow, fabulous explanation there Brandon!

So the intraspecific hybrid is essentially crossing two variants of the same species ((within the same genus))? It would be crossing the species with the/a subspecies of itself then?

Really fascinating. I ought to just get a dummies book of botany, but am not sure where to begin there, lol!

Thanks for taking the time with answering my question- much appreciated!
CMK


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RE: Bigeneric/intergeneric vs. interspecific

"So the intraspecific hybrid is essentially crossing two variants of the same species ((within the same genus))? It would be crossing the species with the/a subspecies of itself then?"

Yes, between two different individuals from within the same species. They could be different cultivars, different varieties, different subspecies, etc.


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RE: Bigeneric/intergeneric vs. interspecific

Thank you Brandon ;-)
CMK


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