Zak ERA8 (ENHANCED RESPONSE to ABA8) (Reg. No. GP‐966, PI 669443) is a unique line derived from soft white spring wheat (Triticum aestivum L.) 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. Zak ERA8 was tested under experimental number 60.1.27.10. The ERA8 mutation 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 Zak ERA8 line has been backcrossed twice to wild‐type Zak. Following the first backcross, Zak ERA8 showed similar morphological and grain quality traits to the original Zak cultivar.

中文翻译：

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Zak ERA8软白春小麦种质的注册，其对ABA的响应增强且种子休眠增加。

扎克ERA8（Ë NHANCED ř ESPONSE到甲BA 8）（登记号GP-966，PI 669443）是由软质白色春小麦（衍生的独特线路小麦L.）品种扎克具有增加的种子休眠但离职后在10到16周内成熟。开发这种种质的目的是利用增加的种子休眠来提高对收获前发芽的耐受性，这可能会导致严重的经济损失。该种质由华盛顿州立大学的USDA–ARS和华盛顿州立大学合作开发。Zak ERA8在实验编号60.1.27.10下进行了测试。该ERA8通过化学诱变产生突变，然后选择无法在过低的脱落酸（ABA）浓度下无法发芽而无法抑制野生型Zak种子发芽的突变。半显性Zak ERA8品系与野生型Zak回交了两次。第一次回交后，Zak ERA8表现出与原始Zak品种相似的形态和籽粒品质性状。