Hard red spring wheat (HRSW; Triticum aestivum L). production in South Dakota has decreased by nearly 50% over a recent 10-year timespan due to grower preferences for producing corn (Zea mays L.) and soybean [Glycine max (L.) Merr.]. End-users of HRSW are concerned with grain protein concentration (GPC). Among growers that still produce HRSW, cultivar selection decisions are heavily based on grain yield potential, and they become most concerned with GPC only when it is low enough to result in sales price discounts. It is important that HRSW breeding programs release new cultivars that balance the needs of both end-users and growers. The objective of this research was to release a HRSW cultivar possessing both high grain yield potential and GPC for South Dakota and regional producers. ‘Ascend-SD’ (Reg. no. CV-1204, PI 700966) was developed by the SDSU-HRSW breeding program and released by the South Dakota Agricultural Experiment Station to certified seed producers in early 2022. The cross MN10261-1/SD4389 was completed during fall 2013, and the resulting population was advanced via an early-generation bulk-testing program, where F_4:7 seed was included in the 2018 preliminary yield trial and designated as SD4873. Prior to release, SD4873 also was tested in the advanced yield trial from 2019 through 2021 as well as crop performance testing trials in 2020 and 2021. Ascend-SD was released for its competitive combination of high grain yield potential and GPC.

中文翻译：

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“Ascend-SD”硬红春小麦登记

硬红春小麦（HRSW；Triticum aestivum L）。由于种植者偏爱生产玉米 ( Zea mays L.) 和大豆 [ Glycine max (L.) Merr.]，南达科他州的产量在最近 10 年时间里下降了近 50% 。HRSW 的最终用户关心谷物蛋白浓度 (GPC)。在仍然生产 HRSW 的种植者中，品种选择决策在很大程度上取决于粮食产量潜力，只有当 GPC 低到足以导致销售价格折扣时，他们才会最关心 GPC。HRSW 育种计划推出能够平衡最终用户和种植者需求的新品种非常重要。本研究的目的是为南达科他州和地区生产者推出具有高谷物产量潜力和 GPC 的 HRSW 品种。“Ascend-SD”（注册号 CV-1204，PI 700966）由 SDSU-HRSW 育种计划开发，并由南达科他州农业实验站于 2022 年初向经过认证的种子生产者发布。杂交 MN10261-1/SD4389该项目于 2013 年秋季完成，所得群体通过早期批量测试计划进行推广，其中 F _4:7种子被纳入 2018 年初步产量试验并指定为 SD4873。在发布之前，SD4873还经过了2019年至2021年的高级产量试验以及2020年和2021年的作物性能测试试验。Ascend-SD因其高谷物产量潜力和GPC的竞争组合而被发布。