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The Center for Native Grasslands Management




Title: Outcrossing reciprocity study between remnant big bluestem (Andropogon gerardii) populations in the Carolinas
Year: 2010
Author(s): Tompkins, R., Stringer, W., Bridgers, Jr., W.
Source Title:
Source Type: Proceedings
pages: 64
Original Publication: http://nativegrasses.utk.edu/publications/ENGSproceedings_web.pdf  
Abstract: An out-crossing reciprocity study was conducted with five Andropogon gerardii populations across North and South Carolina for growing seasons 2007-08. A total of 15 treatments each were established at four garden sites. Both out-crossing (5.1%) and selfing rates (3.5%) were low for seed germination. However, germination was significantly higher for both outcrossed and selfed seeds from plants from the Suther Prairie population. There were no significant differences in seed set among plants from the five populations. In addition, there were no significant differences in parental effect in either germination or seed set among plants from the five populations. Plants from the Black Jack Serpentine Barren population (paternal) x Suther Prairie population (maternal) and it reciprocal SP x BJ had the highest combined percent seed germination (21.3% and 5.8%, respectively). Plants from the Suther Prairie population (paternal) x Buck Creek Serpentine Barren (maternal) and its reciprocal BC x SP had the highest combined percentage of seed set (22.7% and 9.6%, respectively). Plants from the The Sumter National Forest population failed to produce germinable seeds.
Publisher: Proceedings of the Seventh Eastern Native Grass Symposium. Knoxville, TN, October 5-8, 2010
Editor(s): C. Harper
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