ARS | Publication request: DEVELOPING A BARLEY CORE SUBSET IN THE USDA-ARS NATIONAL SMALL GRAINS COLLECTION

Submitted to: Oat International Conference Proceedings
Publication Type: Proceedings
Publication Acceptance Date: July 30, 1996
Publication Date: N/A

Technical Abstract: A barley core subset is being developed in the USDA-ARS National Small Grains Collection (NSGC) to assist scientists studying diversity in barley, to assist in focusing requests for new evaluations, and to aid in the management of the still increasing size of the NSGC. In 1994 a preliminary core subset of 2,300 accessions was established representing approximately 9% of the Hordeum vulgare ssp. vulgare accessions in the NSGC. Accessions were randomly selected based on the log of the total number of accessions from each country of origin. Accessions chosen are from 105 countries and represent landraces, breeding lines, cultivars, and genetic stocks. Complete agronomic, spike, and seed descriptor data are being collected on this core. In addition disease, insect, and quality descriptor data will then be utilized to select the final core subset consisting of about 5-7% of the total collection, but still containing most of the diversity of the total collection.