Submitted to: Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: December 31, 1999
Publication Date: August 31, 2000
Interpretive Summary: The United States Department of Agriculture, Agricultural Research Service, in cooperation with the Oregon, Idaho, and Washington Agricultural Experiment Stations has released of ARS-1207 narrowleaf trefoil (Lotus glaber Mill. formerly L. tenuis Waldst. et Kit.) germplasm. Narrow leaf trefoil is a non-bloating forage legume that is adapted to drier soil conditions than birdsfoot trefoil. No other broad genetic base narrowleaf trefoil germplasm or named cultivars are available for breeding and experimental purposes. The merit of ARS-1207 is its broad genetic base that has been compiled into a single source. This enhanced germplasm will allow plant breeders to utilize the diversity of the USDA National Plant Germplasm System (NPGS) collection without having to evaluate all accessions.
Technical Abstract: ARS-1207 narrow leaf trefoil (Lotus glaber Mill. formerly L. tenuis Waldst. et Kit.) is the seed resulting from two cycles of intercrossing plants that trace to 38 foreign and three domestic accessions. One domestic and the 38 foreign introductions were originally collected in or acquired from Australia, Czechoslovakia, France, Greece, Hungary, Italy, Kazakhstan, the former Soviet Union, Spain, Turkey and Maryland, USA and obtained from the USDA National Plant Germplasm System (NPGS) collection holdings that were held before to 1994. The two other domestic naturalized accessions were collected near Half Moon Bay and Visalia, CA, USA. No selection was practiced in any cycle. The source materials were intercrossed through two cycles to increase the frequency of new gene combinations, and to provide a base germplasm for selection of new cultivars. The merit of ARS-1207 is its broad genetic base that has been compiled into a single source. Such enhanced germplasm is important because it will allow plant breeders to utilize the diversity of the NPGS collection without having to evaluate all accessions.