Submitted to: Canadian Journal of Forest Research
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: August 12, 2004
Publication Date: December 25, 2004
Citation: Chen, J., Tauer, C.G., Bai, G., Huang, Y., Payton, M.E., Holley, A.G. 2004. Bidirectional introgression between pinus taeda and pinus echinata: evidence from morphological and molecular data. Canadian Journal of Forest Research. 34:2508-2516. Interpretive Summary: Loblolly and shortleaf pine are important tree species in the southeast United States. The hybrids derived from the two species are more resistant to several diseases. It is important to distinguish the hybrid from both parental species and understand the direction of introgression. In this study, a sympatric population from central Arkansas was used. DNA markers identified 10 putative hybrids from the 80 trees sampled. Two putative hybrids were similar to loblolly pine, and eight hybrids were similar to the shortleaf pine. These results suggested that some of the putative hybrids were likely derived from early-generation of backcross with either shortleaf or loblolly pine as the recurrent parent within the studied population.