Bigeneric/intergeneric vs. interspecific

christinmk z5b eastern WAMay 13, 2013

So I was looking up the term âÂÂinterspecific hybridâ awhile back and a couple sites commented that it doesnâÂÂt always have to be two species within the same genera, but different species of different genera. WouldnâÂÂt 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 canâÂÂt?? Is it Chromosome compatibility or something? IâÂÂm not knowledgeable in this area whatsoever, so the more dumbed-down the answer the better, lol. ;-)
Thanks much!
CMK

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brandon7 TN_zone(7)

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.

    Bookmark   June 2, 2013 at 3:22PM
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christinmk z5b eastern WA

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

    Bookmark   June 8, 2013 at 10:14AM
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brandon7 TN_zone(7)

"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.

    Bookmark   June 30, 2013 at 9:27PM
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christinmk z5b eastern WA

Thank you Brandon ;-)
CMK

    Bookmark   July 5, 2013 at 11:12AM
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