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| ACCESSION | PLANT NAME | TAXONOMY | ORIGIN | GENEBANK | IMAGE | AVAILABILITY | RECEIVED | SOURCE TYPE | SOURCE DATE | COLLECTION SITE | COORDINATES | ELEVATION | HABITAT | IMPROVEMENT LEVEL | NARRATIVE | | |
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| 0 | PI 672006 | UTDG-101 | Dactylis glomerata L. subsp. glomerata | Utah, United States | W6 | | | 2014 | DEVELOPED | | | | | | Breeding material | 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. | 1918674 | PI 672006 |