‘M77’ (PP30,402), a perennial Miscanthus sinensis ornamental grass with significantly reduced seed production, was approved for release by the University of Georgia College of Agricultural and Environmental Sciences in 2016. We evaluated ‘M77’ at Tifton and Blairsville, GA, in comparison with M. sinensis var. gracillimus. Genotypes were evaluated for inflorescence and leaf height, canopy diameter, inflorescence length and number per plant, leaf length and width, and seed set. Data for each variable were subjected to analysis of variance, and Fisher’s least significance differences at P ≤ 0.05 were used for mean separation.
Miscanthus sinensis is a vigorous grass native to Asia that is used as an ornamental and for biomass production. This species can be quite invasive (Meyer, 2004) because of its high seed production under various environmental conditions and especially at higher elevations (Meyer and Tchida, 1999). A broad range of morphologically variable ornamental cultivars has been released (Smith et al., 2004). Efforts have been made to reduce seed set and viability in various Miscanthus cultivars. Research has shown that triploid genotypes produce less seed (Ranney and Touchell, 2016; Smith et al., 2004). Others have shown that certain cultivars produce nonviable seed (Rounsaville et al., 2011).
Meyer, M.H. 2004 Miscanthus: Ornamental and invasive grass. HortScience 39:792 (abstr.)
Ranney, T.G. & Touchell, D.H. 2016 Miscanthus sinensis grass named ‘NCMS1’. USPP26387P3
Rounsaville, T.J., Touchell, D.H. & Ranney, T.G. 2011 Fertility and reproductive pathways in diploid and triploid Miscanthus sinensis HortScience 46 1353 1357
Royal Horticultural Society 2007 RHS colour chart. 5th ed. Royal Hort. Soc., London
Smith, M. V., Horn, M. & Christy, S. 2004 Miscanthus sinensis named ‘Gold Bar’. USPP15193P2