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.
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