Shortleaf Hybridization: Should We Be Concerned?

John F. Stewart and Rodney E. Will, Oklahoma State University

Environmental Management, Forest Management, and Regeneration

Occasionally, closely related species can hybridize, that is fertilize each other and produce offspring that have a mixture of genes from both parent species. Some hybrids are themselves infertile or poorly adapted, such as the mule (a hybrid of a male donkey and a female horse that cannot sire nor bear offspring). Many hybrids, however, can reproduce. Shortleaf pine x loblolly pine hybrids are fertile with both parent species and other hybrids.

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