Registration of 'KS Big Bow' hard white winter wheat

'KS Big Bow' (Reg. no. CV-1206, PI 701521), a hard white winter wheat (Triticum aestivum L.) cultivar, was developed by the wheat breeding program at the Agricultural Research Center-Hays, Kansas State University, and released by the Kansas Agricultural Experiment Station in 2022. KS Big Bow was selected from a single cross of KS050223M-2/KS11HW15 using a modified bulk breeding method. The main objective of this cross is to release a competitive hard white winter wheat cultivar with adaptation to the dryland production in western Kansas. KS Big Bow is an F5-derived line and was tested in yield trials from 2017 to 2022 in Kansas before its release. It has performed well in dryland yield trials in western Kansas. KS Big Bow has a medium to medium-early maturity and medium plant height. Its test weight and straw strength are good. KS Big Bow has a good disease-resistant package including resistance to Wheat streak mosaic virus, moderate resistances to stripe rust (caused by Puccinia striiformis Westend. f. sp. tritici Erikss.) and stem rust (caused by P. graminis Pers f. sp. tritici Eriks. & E. Henn.), and intermediate resistance to Barley yellow dwarf virus. Its milling and baking qualities are about average. KS Big Bow is a newly released hard white winter wheat cultivar for western Kansas.KS Big Bow has high yield potential.KS Big Bow has good disease resistance, including Wheat streak mosaic virus, stripe rust, and stem rust.