Abstract
Poor seed production and stand establishment are limitations to the use of thickspike wheatgrass [Elymus lanceolatus (Scribn. & J.G. Sm.) Gould] in rangeland re-vegetation projects. This study assessed the heritability of seed production, rhizome proliferation, and biomass production and genotypic correlations among these traits in a population of half-sib thickspike wheatgrass families at a site near Nephi, UT, USA during 2005 and 2006. Heritability estimates were ~ 0.6 for seed production and rhizome spread, but non-significant for biomass production. Genotypic correlations among the traits were all low or non-significant. Key words: Biomass production, genotypic correlation, heritability, rhizome, seed production, thickspike wheatgrass
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