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Title:   Author  item
                                            SCHULER, COURTNEY - UNIVERSITY OF NEBRASKAitem
                                            Vogel, Kennethitem
                                            BALTENSPERGER, DAVID - TEXAS A&M UNIVERSITYitem
                                            Sarath, Gautamitem
                                            Mitchell, Robert

                                                         - *Rob*
  Submitted to: Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 9/10/2007
                                    Publication  Date: 11/7/2007
                                    Citation: Schuler, C., Vogel, K.P., Baltensperger, D., Sarath, G., Mitchell, R. 2007. Evaluation of leadplant (Amorpha canescens) germplasm collected from prairies in the Midwest USA. In Annual Meeting Abstracts [CD-ROM] No. 278-10. Agronomy Society of America, Crop Science Society of America, Soil Science Society of America Meeting. Madison, WI.Interpretive Summary:
                                Technical Abstract: Leadplant (Amorpha canescens Pursh.) is a small leguminous shrub native to the prairies and plains of the central USA where it is a valuable forage species.  Seed of leadplant is in high demand for reseeding grasslands to native species.  Released cultivars and source identified germplasms are not available for commercial seed production.  To address this problem, leadplant germplasm was collected from remnant prairies in the Midwest and Central Plains.  Accessions collected from remnant prairies were classified by the Plant Adaptation Region (PAR) from which they were collected. PARs are geographical areas defined by combining Ecoregions and USDA Plant Hardiness Zones.  Seedlings of the accessions were transplanted into isolated polycross nurseries for each PAR which also serve as evaluation nurseries.  The leadplant germplasm in a PAR nursery represents the genetic variability of leadplant in that PAR.  Accessions in each of four nurseries were evaluated for phenological development and seed yield in 2006.  Growth stages included early, mid, and late vegetative; early and late bud; early and late bloom; early, late, and mature seed.  Once accessions reached the mature seed stage, inflorescences were harvested and threshed on a per-plot basis, cleaned, and weighed.  Similar data is being collected in 2007.  In 2006, there was substantial genetic variation for all traits and it should be possible to select accessions that have superior seed yields. Data from two years of evaluation will be presented.


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