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United States Department of Agriculture

Agricultural Research Service

Research Project: Improved Control of Stripe Rust in Cereal Crops

Location: Wheat Genetics, Quality Physiology and Disease Research

Title: Registration of 'Otto' Wheat

Authors
item Carter, A. -
item Jones, S. -
item Lyon, S. -
item Balow, K. -
item Shelton, G. -
item Higginbotham, R. -
item Chen, Xianming
item Engle, Douglas
item Baik, B. -
item Guy, S. -
item Murray, T. -
item Morris, Craig

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: December 28, 2012
Publication Date: April 2, 2013
Citation: Carter, A.H., Jones, S.S., Lyon, S.R., Balow, K.A., Shelton, G.B., Higginbotham, R.W., Chen, X., Engle, D.A., Baik, B., Guy, S.O., Murray, T.D., Morris, C.F. 2013. Registration of 'Otto' Wheat. Journal of Plant Registrations. 7(2). Avalable: doi: 10.3198/jpr2012.07.0013cr.

Interpretive Summary: Resistance to strawbreaker foot rot and to stripe rust are important traits for winter wheat cultivars produced in the Pacifi Northwest region of the United States. The objective of this research was to develop an adapted winter wheat cultivar with highly effective resistance to both diseases. ‘Otto’ soft white winter wheat was developed and released in September 2011 by the Agricultural Research Center of Washington State University. Otto was tested under the experimental designations J980218, J980218-6, and WA008092, which were assigned through progressive generations of advancement. Otto is a semidwarf cultivar adapted to the low rainfall (<300 mm of average annual precipitation), unirrigated wheat production regions of Washington. Otto is resistant to strawbreaker foot rot, has high-temperature, adult-plant resistance to the stripe rust pathogen, is tolerant to both speckled and pink snow molds, is intermediate in height, has midseason maturity, and has a high test weight and grain yield potential. Otto has end-use quality properties similar or superior to those of ‘Stephens’, ‘Brundage 96’, and ‘Xerpha’.

Technical Abstract: Resistance to strawbreaker foot rot (caused by Oculimacula yallundae Crous & W. Gams and O. acuformis Crous & W. Gams) and to stripe rust (caused by Puccinia striiformis Westend. f. sp. tritici Eriks.) are important traits for winter wheat cultivars produced in the Pacifi Northwest region of the United States. The objective of this research was to develop an adapted winter wheat cultivar with highly effective resistance to both diseases. ‘Otto’ (Reg. No. CV-1087, PI 667557) soft white winter wheat (Triticum aestivum L.) was developed and released in September 2011 by the Agricultural Research Center of Washington State University. Otto was tested under the experimental designations J980218, J980218-6, and WA008092, which were assigned through progressive generations of advancement. Otto is a semidwarf cultivar adapted to the low rainfall (<300 mm of average annual precipitation), unirrigated wheat production regions of Washington. Otto is resistant to strawbreaker foot rot, has high-temperature, adult-plant resistance to the stripe rust pathogen, is tolerant to both speckled (caused by Typhula ishikariensis S. Imai) and pink [caused by Microdochium nivale (Fr.:Fr.) Samuels & I. C. Hallett] snow molds, is intermediate in height, has midseason maturity, and has a high test weight and grain yield potential. Otto has end-use quality properties similar or superior to those of ‘Stephens’, ‘Brundage 96’, and ‘Xerpha’.

Last Modified: 8/22/2014
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