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ARS Home » Plains Area » Temple, Texas » Grassland Soil and Water Research Laboratory » Research » Publications at this Location » Publication #336839

Research Project: Development and Evaluation of Sustainable Crop and Grassland Production Systems

Location: Grassland Soil and Water Research Laboratory

Title: QTL x environment interactions and latitudinal adaptation in switchgrass (Panicum virgatum)

item JUENGER, TOM - University Of Texas
item LOWRY, DAVID - Michigan State University
item REILLEY, JOHN - Natural Resources Conservation Service (NRCS, USDA)
item Fay, Philip
item BONNETTE, JASON - University Of Texas
item ROUQUETTE, MONTE - Texas Agrilife Research
item WU, YANQI - Oklahoma State University
item FRITSCHI, FELIX - University Of Missouri
item Mitchell, Robert - Rob
item BOE, ARVID - South Dakota State University

Submitted to: Plant and Animal Genome Conference
Publication Type: Abstract Only
Publication Acceptance Date: 11/1/2016
Publication Date: 1/14/2017
Citation: Juenger, T., Lowry, D., Reilley, J., Fay, P.A., Bonnette, J., Rouquette, M., Wu, Y., Fritschi, F., Mitchell, R., Boe, A. 2017. QTL x environment interactions and latitudinal adaptation in switchgrass (Panicum virgatum). In: Proceedings of the Plant and Animal Genome ConferenceXXV, January 14-18, 2017, San Diego, California. 2017.

Interpretive Summary:

Technical Abstract: Switchgrass (Panicum virgatum) is a polyploid C4 perennial grass that is native to North America and has been championed as a promising biofuel feedstock. It is a common member of most native prairie communities and exhibits extensive phenotypic variability and adaptation across its range, especially related to latitude and precipitation gradients. Much of this variability is associated with evolved lowland and upland ecotypes. Upland ecotypes are short, rhizomatous, thin-stemmed, and generally adapted to drier conditions while lowland ecotypes are vigorous, tall, thick-stemmed and adapted to more mesic sites. Here, we report on progress on the development of genetic and genomic resources for switchgrass, as well as present results from field experiments aimed at understanding upland/lowland ecotype divergence and local adaptation. In particular, we present preliminary results from QTL studies aimed at detecting gene-by-environment interactions for performance utilizing collaborative common garden experiments across the species latitudinal range.