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CULTIVARS

Registration of ‘Cataldo’ Wheat

^a Univ. of Idaho, Aberdeen Research and Extension Center, 1693 S 2700 W, Aberdeen, ID 83210
^b Soft Wheat Quality Lab., USDA-ARS, 1680 Madison Ave., Wooster, OH 44691
^c Univ. of Idaho, Dep. of Plant, Soil and Entomological Sciences, P.O. Box 442339, Moscow, ID 83844-2339
^d Horticulture and Crop Science Dep., Ohio State Univ., 1680 Madison Ave., Wooster, OH 44691
^e Washington State Univ., Dep. of Crop and Soil Science, P.O. Box 646420, Pullman, WA 99164-6420
^f Univ. of Idaho, Parma Research and Extension Center, 29603 U of I Lane, Parma, ID 83660
^g USDA-ARS, 361 Johnson Hall, Washington State Univ., Pullman, WA 99164-6430. Research was funded in part by the USDA Fund for Rural America, the Idaho Wheat Commission, and the Idaho Agricultural Experiment Station Hatch Projects IDA 1222 and IDA 0267

^* Corresponding author (jchen{at}uidaho.edu).

ABSTRACT

‘Cataldo’ (Reg. No. CV-1033, PI 642361) is a soft white spring wheat (Triticum aestivum L.) developed by the Idaho Agricultural Experiment Station and released in spring 2007. Cataldo was tested under experimental numbers A02215S-B-1 and IDO642 and has the pedigree of IDO584/4*‘Alturas’. IDO584 carries a new source of resistance to Hessian fly [Mayetiola destructor (Say)], the gene H25, originally derived from KS92WGRC 20. Cataldo was released for its novel Hessian fly resistance, conferred by the gene H25. The resistance was selected using molecular markers Xgwm610 and Xgwm397 associated with the H25 gene, together with phenotypic testing. Cataldo was released to extend the range of the Alturas genetic background into rainfed production regions of northern Idaho and eastern Washington where Hessian fly is a consistent limitation to production. Cataldo is also earlier and shorter than Alturas and has high-temperature adult-plant resistance to stripe rust (Puccinia striiformis Westend. f. sp. tritici Eriks.) and end-use quality (cookie and Asian noodles) similar to Alturas.

Abbreviations: HTAP, high-temperature adult-plant • IT, infection type • UI, University of Idaho • WRSWSN, Western Regional Soft White Spring Nursery