Mark P. WidrlechnerU.S. Department of Agriculture-Agricultural Research Service, North Central Regional Plant Introduction Station, Iowa State University, Departments of Agronomy and Horticulture, Ames, IA 50011-1170.
Michael S. DosmannDepartment of Horticulture, Iowa State University, Ames, IA 50011-1100
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Jeffery K. Iles
Jeffery K. IlesDepartment of Horticulture, Iowa State University, Ames, IA 50011-1100.
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Mark P. Widrlechner
Mark P. WidrlechnerU.S. Department of Agriculture-Agricultural Research Service, North Central Regional Plant Introduction Station, Iowa State University, Departments of Agronomy and Horticulture, Ames, IA 50011-1170.
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