RNGR.net is sponsored by the USDA Forest Service and Southern Regional Extension Forestry and is a colloborative effort between these two agencies.

U.S. Department of Agriculture USDA Forest Service Southern Regional Extension Forestry Southern Regional Extension Forestry

Geographic Races of Shortleaf Pine Not Reproductively Isolated in a Mixed Plantation

In a shortleaf pine (Pinus echinata Mill.) plantation in Mississippi, western sources of the species shed pollen earlier than eastern sources. Introgression with loblolly (P. taeda L.) in the western sources is proposed as an explanation. Overlap in time of shedding indicated that no source was reproductively isolated from any other.


Download this file:

PDF document Download this file — PDF document, 431Kb

Details

Author(s): Ronald C. Schmidtling

Publication: Tree Improvement and Genetics - Southern Forest Tree Improvement Conference - 1971