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The Center for Native Grasslands Management

Title: Comparison of seed cleaning techniques for improving quality of eastern gamagrass seed
Year: 2000
Author(s): Douglas, J. L., Grabowski, J. M., Keith, B. C.
Source Title: Proceedings of the 2nd Eastern Native Grass Symposium
Source Type: Proceedings
pages: 117-120
Original Publication:  
Abstract: Eastern gamagrass is a native warm-season perennial bunchgrass with potential for livestock forage and cropland erosion control in the Southeast. Attempts to establish stands from seed have given inconsistent results. The seed of eastern gamagrass is protected between a rachis internode and an outer glume association known as a cupulate fruitcase. The cupulate fruitcase has been shown to inhibit germination in some genotypes of eastern gamagrass, but germination can be enhanced with cold-moist stratification for 60 days followed by exposure to temperatures of at least 30 degrees Celsius. Indeterminate seed maturity is another factor that indirectly affects seed quality. A typical combine-run harvest consists of complete seed units (cupulate fruitcase with filled seed), incomplete seed units (cupulate fruitcase with unfilled seed) and other non-viable inert matter. Inability to adequately separate filled seeds from unfilled seeds may lead to poor establishment.
Publisher: Agricultural Research Service and Natural Resource Conservation Service, Beltsville, MD
Editor(s): J. R. Ritchie