ACUÑA Carlos Alberto
congresos y reuniones científicas
THE STATUS OF Paspalum SPECIES GERMPLASM IN THE SOUTHEASTERN U.S.
ANN R. BLOUNT; M. HARRISON; CARLOS A. ACUÑA; BYRON BURSON; KENNETH H. QUESENBERRY; CHERYL L. MACKOWIAK; JOSE DUBEUX; KEVIN E. KENWORTHY; PATRICIO MUÑOZ
Simposio; 5th International Symposium of Forage Breeding; 2015
Universidad de Buenos Aires
The number of international and domestic grass collections from the U.S. have declined in recent years, due to reductions in access to international indigenous germplasm, and public and private funding to sponsor collection trips. The U.S. Department of Agriculture, Agricultural Research Service, Plant Exchange Officeprovides funding for plant germplasm collection trips. When germplasm is collected it is deposited into the National Plant Germplasm System (NPGS)for distribution to qualified international and domestic organizations and scientists. This system has been the mainstay for obtaining plant materials that support many U.S. forage and turfgrass breeding programs. Recently, most international U.S. collections have focused upon cool-season adapted grass genera. We propose to work in collaboration with the Universidad Nacional del Nordeste (UNNE) in Corrientes, Argentina, to conduct international (Argentina) and domestic (USA) collections of Paspalum spp. The genus Paspalum includes over 330 species, which offer potential as livestock and wildlife forage, turfgrass, or use in land restoration. In the U.S.,approximately 70 species are maintained in the NPGS collection. Bahiagrass (Paspalum notatum Flügge) is the most widely adapted and utilized Paspalum species in the U.S. Although common bahiagrass was introduced from South America into the U.S. in the early 1900s, it was not until the introduction of ?Paraguay? and ?Pensacola?cultivars in the 1940s, and ?Argentine? in the early 1950s, that bahiagrass became a major pasture species across the U.S. Southern Coastal Plain. Over three million hectares of bahiagrass are now grown as improved pasture in the southern U.S. Additionally, the U.S. has native Paspalum species, including P. setaceum, P. plicatulum, P. distichum, P. floridanum, and P. vaginatum that provide valuable genetic resources. Within each collection host country, site identification should include map coordinates and environmental considerations, such assoil type, rainfall, temperature, and photoperiod. Previously,this information had often been lacking, but it will hasten plant germplasm developmentand potential use of these germplasm as forage, turfgrass or in land restoration and conservation.