Intraspecific Hybridization of Poa bulbosa L. for Use as a Perennial Groundcover
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Date
2022-12
Authors
Ardoin, Caleb Elie
Major Professor
Shui-zhang, Fei
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Lubberstedt, Thomas
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Abstract
Cover crops have shown to reduce erosion, suppress weeds and pest, store nutrients, improve water infiltration and reduce runoff, recycle carbon, and moderate soil temperatures (Hoorman et al., 2009). Despite the benefits of cover crop implementation, reluctancy to implement cover crops is driven by lack of perception of benefit and the cost of implementation (Arbuckle & Roesch-McNally, 2015). An evaluation of perennial species with characteristics suggested to be non-competitive with summer crops was conducted by Flynn et al. (2013). The species evaluated were composed of grasses and legumes with variable levels of shade tolerance, winter hardiness, root growth, and persistence. While potential usage of perennials for groundcover was found, all of the species evaluated reduced the yield of maize (Flynn et al., 2013). One well-performing genus in Flynn’s study was the genus of Poa L. It is thus suggested that a breeding program to create a biological model containing the morphologically and physiologically ideal PGC traits, known as a PGC ideotype, by using species from the genus Poa. Furthermore, the species P. bulbosa is a candidate for intraspecific and interspecific hybridization due to its unique reproduction characteristics and summer dormancy attributes.
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2022