Submitted to: Crop Science
Publication Type: Germplasm Release
Publication Acceptance Date: 4/18/2006
Publication Date: 8/1/2006
Citation: Kolb, F.L., Brown, C.M., Smith, N.J., Domier, L.L. 2006. Registration of six sets of near-isogenic spring oat germplasm lines differing in tolerance to barley yellow dwarf virus. Crop Science. 46(4):1831-1832.
Technical Abstract: Six sets of spring oat (Avena sativa L.) germplasm lines (Reg. No GP-94 to GP-121, PI 641972 to PI 641999) with lines within a set differing for tolerance to Barley yellow dwarf virus (BYDV) were developed and released by the Illinois Agricultural Experiment Station of the University of Illinois and the USDA-ARS. BYDVs cause economic losses in cereal grain crops worldwide. Host plant resistance/tolerance is the most important strategy for reducing losses caused by BYDVs. The six sets of lines (four or six lines per set, 28 lines total) were developed using four different BYDV-tolerant parents: IL86–1156, IL86–5698, IL86–6404, and Ogle. Clintland 64 was the BYDV-susceptible recurrent parent in all crosses. In 1995 and 1996, 110 BC5 lines were evaluated in randomized, BYDV-PAV-IL-inoculated hills using three replications each year. The lines were evaluated twice in the field using three replications of paired control and BYDV-PAV inoculated hills in each evaluation. BYDV tolerance was evaluated multiple times each year using a 0 (symptomless) to 9 (very severe symptoms) scale. From the 110 lines, 28 lines were selected for release. Within a group, the lines differ primarily in BYDV tolerance and trace to a single F2 plant in the original cross. Each line originated from a single BC5F4 plant. The range in BYDV tolerance varies among the groups. The lines have already been used to study the inheritance of BYDV tolerance and identify molecular markers associated with genes for BYDV tolerance in oat. Seeds are available from the corresponding author and have been deposited in the USDA-ARS National Plant Germplasm System.