‘MN‐Clearwater’ (Reg. no. CV‐287, PI 692651) is the world's first commercial food‐grade intermediate wheatgrass [IWG; Thinopyrum intermedium (Host) Barkworth & D.R. Dewey subsp. intermedium] grain cultivar. It was developed as a synthetic population at the University of Minnesota, St. Paul, MN, and released in August 2019. Intermediate wheatgrass is a perennial grain crop currently undergoing domestication and is known for its extensive long root system that can recycle soil nutrients and sequester carbon. MN‐Clearwater (experimental designation MN1504) was created by intercrossing seven parents selected for high grain yield, reduced shattering, high free grain threshing, reduced lodging, and uniform maturity. MN‐Clearwater was advanced for two generations before being evaluated in statewide yield trials, after which the fourth seed generation was released as the cultivar in a limited public release. In variety trials across Minnesota, MN‐Clearwater produced 696 kg ha⁻¹ (621 lb ac⁻¹) of grain with minimal lodging and negligible disease levels. The first 2 yr produce the highest grain yields under Minnesota conditions, and third‐year yields are significantly lower (average reduction of 77%) than the first 2 yr. As the first IWG cultivar released for sale under the Kernza trade name (The Land Institute), we expect this population to be a cornerstone resource for the IWG research community as well as for interested growers, food processors, and commercial partners. MN‐Clearwater grain is sold as Kernza perennial grain.

中文翻译：

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食品级中级小麦草（Kernza多年生谷物）首个品种'MN-Clearwater'

“ MN‐Clearwater”（注册号CV‐287，PI 692651）是世界上第一个商业食品级中间小麦草[IWG; 中间草（宿主）Barkworth＆DR杜威子亚种。中间]谷物品种。它是在明尼苏达州圣保罗市的明尼苏达大学作为合成种群开发的，于2019年8月发布。中级小麦草是一种多年生的谷物作物，目前正在驯化，并且以其广泛的长根系统而闻名，该系统可循环利用土壤养分和养分。螯合碳。MN-清水（实验代号MN1504）是通过交叉选育的7个亲本杂交而成的，这些亲本被选为高谷物产量，减少粉碎，高自由粒脱粒，减少倒伏和均匀成熟。在全州范围的产量试验中进行评估之前，MN‐Clearwater已发展了两代，此后第四代种子作为品种在有限的公开发行中发布。在明尼苏达州的各种试验中，明尼苏达州的清水生产了696 kg ha ^-1（621 lb ac ^-1）倒伏最小且疾病水平可忽略不计的谷物。前2年在明尼苏达州条件下谷物产量最高，而第三年的产量则明显低于前2年（平均降低77​​％）。作为首批以克恩扎（Kernza）商标名称出售的IWG品种（土地研究所），我们希望这一种群成为IWG研究社区以及感兴趣的种植者，食品加工商和商业伙伴的基石资源。MN‐Clearwater谷物作为Kernza多年生谷物出售。