Details for: PI 672006, Dactylis glomerata L. subsp. glomerata, UTDG-101


Summary Data
Taxonomy:
Dactylis glomerata L. subsp. glomerata
Top Name:
UTDG-101
Origin:
Developed – Utah, United States
Received by NPGS:
15 May 2014
Improvement Status:
Breeding material
Form Received:
Seed
Life Form:
Perennial
Life Cycle:
Perennial
Availability
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Seed100 countPI 672006 2021o SD
 
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Core Passport Data
Taxonomy:
Dactylis glomerata L. subsp. glomerata
Top Name:
UTDG-101
Origin:
Developed – Utah, United States
Received by NPGS:
15 May 2014
Improvement Status:
Breeding material
Form Received:
Seed
Life Form:
Perennial
Life Cycle:
Perennial
Source History
Developed

Utah, United States

Developer(s):
Accession Names and Identifiers
UTDG-101
Type: Developer identifier

Narrative
The United States Department of Agriculture - Agricultural Research Service announces the public release of the orchardgrass UTDG-101germplasm as a late-maturing grass with excellent forage quality and increased winter tolerance for use in orchardgrass breeding programs. Selection emphasis in UTDG-101 was for late-maturity, winter hardiness, and dry matter yield (DMY). UTDG-101 traces back to polycross seed that originated from crosses among four orchardgrass collections (PI 659612, PI 659613, W6 20243, and W6 20247) made within 100 km west-southwest of Zhaosu County, Xinjiang Uyghur Autonomous Region, China. Based on pairwise ?-st values, which ranged from 0.007 to 0.298, UTDG-101 is more genetically distinct than orchardgrass cultivars `Paiute?, `Pennlate?, and `Benchmark?. Diagnostically, UTDG-101 has significantly (P<0.05) longer flag leaves than the orchardgrass cultivars examined in this study. Based on mitotic root counts, UTDG-101 is an autotetraploid (2n=4x=28). In forage harvested 16 May 2011, UTDG-101 had significantly higher crude protein (191.4 g kg-1), relative feed value (124.2), sugars (58.8 g kg-1), water-soluble carbohydrates (sugars + fructans; WSC) (75.8 g kg-1), and digestibility (660.6 g kg-1) and significantly lower acid detergent fiber (293.2 g kg-1) and neutral detergent fiber (NDF) (495.6 g kg-1). Forage of UTDG-101 harvested on 5 July 2011 had significantly lower NDF and increased fructan, sugar, and WSC concentrations. UTDG-101 exhibited significantly less winter injury than other orchardgrass, tall fescue, and perennial ryegrass cultivars. Due to the high combining ability, late maturity, increased forage quality, and winter hardiness of UTDG-101, this source of germplasm could provide genetic resources for developing late-maturing orchardgrass with increased forage quality and reduced winter injury for management with alfalfa mixtures or for grazing.
Dactylis glomerata L. subspp. glomerata
Genus:
Dactylis
Family:
Poaceae (alt. Gramineae)
Subfamily:
Pooideae
Tribe:
Poeae
Subtribe:
Dactylidinae
Nomen number:

315496
Verified:
02/20/1990 by ARS Systematic Botanists.
Other conspecific taxa
Dactylis glomerata L. (1510 active accession[s])
Dactylis glomerata L. subsp. himalayensis Domin (1 active accession[s])
Dactylis glomerata L. subsp. hispanica (Roth) Nyman (80 active accession[s])
Dactylis glomerata L. subsp. ibizensis (Gand.) Stebbins & Zohary (1 active accession[s])
Dactylis glomerata L. subsp. judaica Stebbins & Zohary (0 active accession[s])
Dactylis glomerata L. subsp. juncinella (Bory) Stebbins & D. Zohary (2 active accession[s])
Dactylis glomerata L. subsp. lobata (Drejer) H. Lindb. (13 active accession[s])
Dactylis glomerata L. subsp. lusitanica Stebbins & Zohary (3 active accession[s])
Dactylis glomerata L. subsp. santai Stebbins & Zohary (3 active accession[s])
Dactylis glomerata L. subsp. smithii (Link) Stebbins & Zohary (3 active accession[s])
Dactylis glomerata L. subsp. woronowii (Ovcz.) Stebbins & Zohary (5 active accession[s])
Autonyms (not in current use), synonyms and invalid designations
Autonym(s)
Dactylis glomerata L. var. glomerata

Common names
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Citations
  • Jensen, K. B., J. G. Robins, B. S. Bushman, D. A. Johnson, S. D. Stratton, & K. Heaton. 2014. UTDG-101, a late-maturing orchardgrass. J. Pl. Registr. 8(3):318. DOI: 10.3198/jpr2014.04.0018crg. Number of accessions cited: 1
Pedigree
Description:
UTDG-101 traces back to open-pollinated seed from in 1999 at Evans Farm, Millville, UT, four accessions [PI 659612 (X97-035), PI 659613 (X93-042), W6 20243 (X97-064), and W6 20247 (X97-073)] were identified in the field as being very late-maturing with wide leave. These orchardgrass collections were made within 100 km west-southwest of Zhaosu County, Xinjiang Uyghur Autonomous Region, China; where they were growing in mountain meadows used for winter pastures or hay.
Intellectual Property Rights
Journal of Plant Registration. GP-5, ORCHARDGRASS. Issued: 01 Sep 2014.
  • Jensen, K. B., J. G. Robins, B. S. Bushman, D. A. Johnson, S. D. Stratton, & K. Heaton. 2014. UTDG-101, a late-maturing orchardgrass. J. Pl. Registr. 8(3):318. DOI: 10.3198/jpr2014.04.0018crg.