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Inheritance of Oil Percentage in Interspecific Crosses of Hexaploid Oats¹

Groats from F₂-derived lines of oats (in the F₃ generation) from three crosses between Avena sativa L. x A. sterilis L. cultivars, and samples from the parents, were analyzed for oil percentage using the nuclear magnetic resonance method. Oil percentage was inherited polygenically, with high oil content being partially dominant. Transgressive segregates were found in one cross. Oil percentage showed no correlation with groat weight, heading date, or plant height.

Key Words: Avena sterilis • Avena sativa • Transgressive segregation • Phenotypic correlations • Kernel quality

² C. F. Curtiss distinguished professor of agriculture, professor of food technology, and research associate (now, plant breeder at ICRISAT, 1-11-256, Begumpet, Hyderabad 500016, India) Iowa State University, respectively.

Received for publication August 14, 1974.

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