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Research ArticleGermplasm Release

Notice of release of seven little bluestem populations selected for canopy morphology: selected classes of germplasm

Tim L Springer
Native Plants Journal, March 2020, 21 (1) 45-53; DOI: https://doi.org/10.3368/npj.21.1.45
Tim L Springer
Research Agronomist, USDA Agricultural Research Service, Southern Plains Range Research Station, 2000 18th Street, Woodward, OK 73801,
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Abstract

Little bluestem (Schizachyrium scoparium (Michx.) Nash [Poaceae]) selected germ-plasm lines ‘NU-1’, PI 676262; ‘NU-2’, PI 676263; ‘UC-1’, PI 676264; ‘UC-2’, PI 676265; ‘UO-1’, PI 676266; ‘UO-2’, PI 676267; and ‘UO-3’, PI 676268 are synthetic populations selected for canopy morphology. We open-pollinated 727 plants representing 19 accessions to produce seeds for a synthetic population. Accessions were from Texas (12), Rhode Island (1), Wyoming (1), South Dakota (2), and 3 were cultivars. The synthetic population consisted of 4644 plants. After mass selection for canopy morphology, resistance to leaf rust (Puccinia andropogonis [Pucciniaceae]), resistance to culm lodging, and tolerance to a high pH soil, 476 plants remained. We used a cluster analysis to group the selected plants into 7 synthetic populations. Variables used for clustering within each canopy morphology were flowering date, plant height, canopy width, abaxial leaf color hue, value, and chroma; adaxial leaf color hue, value, and chroma; leaf blade length score, leaf blade width score, adaxial leaf angle score, and culm-base leafiness score. The 7 germplasm populations are useful for the breeding and (or) development of cultivars for wildlife habitat, grazing utilization, roadside stabilization, renewable energy, and (or) horticultural landscapes in the southern Great Plains of the US.

  • Schizachyrium scoparium
  • little bluestem
  • Poaceae
  • germplasm
NOMENCLATURE:
  • USDA NRCS (2019)
  • © 2020 by the Board of Regents of the University of Wisconsin System

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Native Plants Journal: 21 (1)
Native Plants Journal
Vol. 21, Issue 1
20 Mar 2020
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Notice of release of seven little bluestem populations selected for canopy morphology: selected classes of germplasm
Tim L Springer
Native Plants Journal Mar 2020, 21 (1) 45-53; DOI: 10.3368/npj.21.1.45

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Notice of release of seven little bluestem populations selected for canopy morphology: selected classes of germplasm
Tim L Springer
Native Plants Journal Mar 2020, 21 (1) 45-53; DOI: 10.3368/npj.21.1.45
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Keywords

  • Schizachyrium scoparium
  • little bluestem
  • Poaceae
  • germplasm
  • USDA NRCS (2019)
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