Effect of large-scale movement of loblolly pine seed on genetiv integrity of the species in its natural range

Abstract

Geographic variation of the major southern pine species has been well studied. Seed collected from different geographic areas vary greatly in their potential for growth and survival depending on where they are planted. In seed source studies of forest tree species, it is often observed that sources from warmer climates grow faster than local sources as long as they are not moved to greatly differing climates. This is true in loblolly pine and is at least partially due to warm-climate sources growing longer in the fall than sources from colder climates (Jayawickrama et al. 1998). There is some advantage to moving loblolly pine seed sources northward to improve yield.

Citation

Schmidtling, Ron C.; Myszewski, Jen H. 2003. Effect of large-scale movement of loblolly pine seed on genetiv integrity of the species in its natural range. In: Proceddings of the Symposium of the North American Forest Commission, Forest Genetic Resources and Silviculture Working Groups, and the International Union of Forest Research Organizations (IUFRO), September 21, Quebec City, Canada, ed. Beaulieu, J., p. 43-48