|Kolmer, James - Jim|
|Seabourn, Bradford - Brad|
Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 9/27/2008
Publication Date: 1/15/2009
Citation: Graybosch, R.A., Peterson, C.J., Baenziger, P.S., Baltensperger, D.D., Nelson, L.A., Jin, Y., Kolmer, J.A., Seabourn, B.W., French, R.C., Hein, G.L. 2009. Registration of ‘Mace’ Hard Red Winter Wheat. Journal of Plant Registrations 3:51-56.
Interpretive Summary: In the western region of the U.S. wheat belt, wheat streak mosaic virus (WSMV) is the primary disease negatively impacting wheat production. WSMV is delivered to wheat plants via a vector, the wheat curl mite. Curl mites persist on green vegetation or volunteer wheat, and , after fall plantings, infest newly germinating wheat plants. In the process, the virus is introduced. Scientists have worked for at least 50 years to develop resistant strains. A highly effective resistant gene was identified in a relative of wheat, intermediate wheat-grass. It was introduced to wheat via processes known as wide-hybridization and embryo-rescue. Early strains were resistant, but lacked suitable grain yield for agronomic production. After repeated cycles of crossing and selection, the experimental breeding line N02Y5117 was developed. This line now is being released to wheat producers as the cultivar ‘Mace’.
Technical Abstract: ‘Mace’ (Reg. No. CV PI 651043) hard red winter wheat (Triticum aestivum L.) was developed by the USDA-ARS and the Nebraska Agricultural Experiment Station and released in December, 2007. Mace was selected from the cross Yuma//PI 372129/3/CO850034/4/4*Yuma/5/(KS91H184/Arlin S//KS91HW29/3/NE89526). Mace primarily was released for its resistance to Wheat Streak Mosaic Virus (WSMV), and adaptation to rain-fed and irrigated wheat production systems in Nebraska and adjacent areas in the northern Great Plains. Mace was derived from a head selection made from a heterogeneous, in terms of field resistance to WSMV, F5 line. Resistance to WSMV is conditioned by the Wsm-1 gene, present on an introgressed chromosome arm from Thinopyrum intermedium (Host) Barkworth & D.R. Dewey [Agropyron intermedium (Horst.) Beauv.] present as a 4DL.4AgS chromosomal translocation. Mace was tested under the experimental designation N02Y5117.