Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50402#.VDzENFfHRK0 Author(s) Joshua A. White , Rocky Lemus Affiliation(s) Plant and Soil Sciences, Mississippi State University, Starkville, USA . ABSTRACT Annual ryegrass ( Lolium multiflourum ) is the most important cool-season forage crop in Mississippi. It is seeded on more than 500,000 acres every year in the state and consequently seed companies intensely market the area with claims of superior genetic performance. Marketing literature observed in Mississippi focuses on the performance of tetraploid (4×) versus diploid (2×) with claims that 4× varieties provide better yield, disease resistance, and seedling vigor. These claims have rarely been substantiat...
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