Details for: PI 692651, Thinopyrum intermedium (Host) Barkworth & D. R. Dewey, 'MN-Clearwater'

Summary Data

Taxonomy:

Thinopyrum intermedium (Host) Barkworth & D. R. Dewey

Cultivar:

'MN-Clearwater'

Origin:

Developed – Minnesota, United States

Maintained:

National Laboratory for Genetic Resources Preservation

Received by NPGS:

31 Jan 2020

Improvement Status:

Cultivar

Form Received:

Seed

Life Form:

Annual and/or Perennial

Life Cycle:

Annual and Perennial

Availability

This accession is not available. Contact site for status.

National Laboratory for Genetic Resources Preservation

There are no images for this accession.

Core Passport Data

Taxonomy:

Thinopyrum intermedium (Host) Barkworth & D. R. Dewey

Cultivar:

'MN-Clearwater'

Origin:

Developed – Minnesota, United States

Maintained:

National Laboratory for Genetic Resources Preservation

Received by NPGS:

31 Jan 2020

Improvement Status:

Cultivar

Form Received:

Seed

Life Form:

Annual and/or Perennial

Life Cycle:

Annual and Perennial

Source History

Developed

Minnesota, United States

Developer(s):

Anderson, James, University of Minnesota

Accession Names and Identifiers

'MN-Clearwater'

Type: Cultivar name

MN1504

Type: Developer identifier

Kernza

Type: Trademark name

Narrative

MN-Clearwater is the world’s first commercial food-grade intermediate wheatgrass (IWG, Thinopyrum intermedium) grain variety. It was developed as a synthetic population at the University of Minnesota (St. Paul, MN, USA) and released in August 2019. IWG is a perennial grain crop currently undergoing domestication and is also known for its impressive long root structure that offers substantial ecosystem services such as reduction in soil erosion and nutrient runoff. 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. The variety was advanced for two generations before being evaluated in statewide yield trials, after which the fourth seed generation was released as the variety in a limited public release. In variety trials across Minnesota, MN-Clearwater produced 562 kg Ha-1 (502 lb ac-1) of grain with minimal lodging and no disease incidence. The first two years produce the highest grain yields under Minnesota conditions and third year yields are significantly lower than the first two years. As the first Kernza variety to be released, 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.

Thinopyrum intermedium (Host) Barkworth & D. R. Dewey

Genus:

Thinopyrum

Family:

Poaceae (alt. Gramineae)

Subfamily:

Pooideae

Tribe:

Triticeae

Nomen number:

314145

Place of publication:

Amer. J. Bot. 72:772. 1985

Verified:

12/21/2007 by ARS Systematic Botanists.

Other conspecific taxa

Thinopyrum intermedium (Host) Barkworth & D. R. Dewey subsp. barbulatum (Schur) Barkworth & D. R. Dewey (0 active accession[s])
Thinopyrum intermedium (Host) Barkworth & D. R. Dewey subsp. intermedium (161 active accession[s])

Autonyms (not in current use), synonyms and invalid designations

Heterotypic Synonym(s)
Agropyron varnense (Velen.) Hayek
Elymus hispidus (Opiz) Melderis subsp. varnensis (Velen.) Melderis
Elytrigia varnensis (Velen.) Holub

Common names

Language	Name	Alternate name	note	seq	Citation
Swedish	trubbkvickrot			2	Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)

Annotations