title: Registration of ZakERA8Soft White Spring Wheat Germplasm with Enhanced Response to ABA and Increased Seed Dormancy.
abstract: ZakERA8(ENHANCED RESPONSE to ABA8) (Reg. No. GP-966, PI 669443) is a unique line derived from soft white spring wheat (Triticum aestivumL.) cultivar Zak that has increased seed dormancy but after-ripens within 10 to 16 wk. The goal in developing this germplasm was to use increased seed dormancy to improve tolerance to preharvest sprouting, a problem that can cause severe economic losses. This germplasm was developed by USDA-ARS, Pullman, WA, in collaboration with Washington State University. ZakERA8was tested under experimental number 60.1.27.10. TheERA8mutation was generated by chemical mutagenesis followed by selection for the inability to germinate on abscisic acid (ABA) concentrations too low to inhibit wild-type Zak seed germination. The semidominant ZakERA8line has been backcrossed twice to wild-type Zak. Following the first backcross, ZakERA8showed similar morphological and grain quality traits to the original Zak cultivar.
authors.affiliation: Dep. of Crop and Soil Science, 209 Johnson Hall, Washington State Univ., Pullman WA 99164-6420.
authors.forename: Shantel A
authors.initials: SA
authors.lastname: Martinez
authors.affiliation: Dep. of Crop and Soil Science, 209 Johnson Hall, Washington State Univ., Pullman WA 99164-6420.
authors.forename: Elizabeth C
authors.initials: EC
authors.lastname: Schramm
authors.affiliation: USDA-ARS, Wheat Genetics Physiology, Biochemistry, and Quality Unit, 209 Johnson Hall, Washington State Univ., Pullman WA 99164-6420.
authors.forename: Tracy J
authors.initials: TJ
authors.lastname: Harris
authors.affiliation: Dep. of Crop and Soil Science, 209 Johnson Hall, Washington State Univ., Pullman WA 99164-6420.
authors.forename: Kimberlee K
authors.initials: KK
authors.lastname: Kidwell
authors.affiliation: Dep. of Crop and Soil Science, 209 Johnson Hall, Washington State Univ., Pullman WA 99164-6420.
authors.forename: Kimberly
authors.initials: K
authors.lastname: Garland-Campbell
authors.affiliation: Dep. of Crop and Soil Science, 209 Johnson Hall, Washington State Univ., Pullman WA 99164-6420.
authors.forename: Camille M
authors.initials: CM
authors.lastname: Steber