Relative Performance of Non-Local Cultivars and Local, Wild Populations of Switchgrass (Panicum virgatum) in Competition Experiments

dc.contributor.author Palik, D. J.
dc.contributor.author Snow, A. A.
dc.contributor.author Heaton, Emily
dc.contributor.author Stottlemyer, A. L.
dc.contributor.author Miriti, M. N.
dc.contributor.author Heaton, Emily
dc.contributor.department Agronomy
dc.date 2018-01-24T20:17:02.000
dc.date.accessioned 2020-06-29T23:04:33Z
dc.date.available 2020-06-29T23:04:33Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2016
dc.date.issued 2016-01-01
dc.description.abstract <p>The possibility of increased invasiveness in cultivated varieties of native perennial species is a question of interest in biofuel risk assessment. Competitive success is a key factor in the fitness and invasive potential of perennial plants, and thus the large-scale release of high-yielding biomass cultivars warrants empirical comparisons with local conspecifics in the presence of competitors. We evaluated the performance of non-local cultivars and local wild biotypes of the tallgrass species <em>Panicum virgatum</em> L. (switchgrass) in competition experiments during two growing seasons in Ohio and Iowa. At each location, we measured growth and reproductive traits (plant height, tiller number, flowering time, aboveground biomass, and seed production) of four non-locally sourced cultivars and two locally collected wild biotypes. Plants were grown in common garden experiments under three types of competition, referred to as none, moderate (with <em>Schizachyrium scoparium</em>), and high (with <em>Bromus inermis</em>). In both states, the two “lowland” cultivars grew taller, flowered later, and produced between 2x and 7.5x more biomass and between 3x and 34x more seeds per plant than local wild biotypes, while the other two cultivars were comparable to wild biotypes in these traits. Competition did not affect relative differences among biotypes, with the exception of shoot number, which was more similar among biotypes under high competition. Insights into functional differences between cultivars and wild biotypes are crucial for developing biomass crops while mitigating the potential for invasiveness. Here, two of the four cultivars generally performed better than wild biotypes, indicating that these biotypes may pose more of a risk in terms of their ability to establish vigorous feral populations in new regions outside of their area of origin. Our results support an ongoing assessment of switchgrass cultivars developed for large-scale planting for biofuels.</p>
dc.description.comments <p>This article is published as Palik DJ, Snow AA, Stottlemyer AL, Miriti MN, Heaton EA (2016) Relative Performance of Non-Local Cultivars and Local, Wild Populations of Switchgrass (Panicum virgatum) in Competition Experiments. PLoS ONE11(4): e0154444. doi: <a href="http://dx.doi.org/10.1371" target="_blank">10.1371/journal.pone.0154444</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/agron_pubs/355/
dc.identifier.articleid 1356
dc.identifier.contextkey 11384678
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath agron_pubs/355
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/4704
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/agron_pubs/355/2016_Heaton_RelativePerformance.PDF|||Fri Jan 14 23:45:15 UTC 2022
dc.source.uri 10.1371/journal.pone.0154444
dc.subject.disciplines Agricultural Science
dc.subject.disciplines Agriculture
dc.subject.disciplines Agronomy and Crop Sciences
dc.title Relative Performance of Non-Local Cultivars and Local, Wild Populations of Switchgrass (Panicum virgatum) in Competition Experiments
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 716d7071-adb0-4700-9b63-b9da2205795e
relation.isOrgUnitOfPublication fdd5c06c-bdbe-469c-a38e-51e664fece7a
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