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Published in Crop Sci 14:767-769 (1974)
© 1974 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Relationship of Protein Percent with other Phenotypic Characters in Interspecific Oat Crosses1

LeRoy A. Spilde, R. S. Albrechtsen and M. D. Rumbaugh2

Protein percentage and its relationship with 15 other agronomic characteristics were studied in F5 generation progenies of F4 plants from crosses between Avena sterilis L. Var. Maxima Perez Lara and five A. sativa L. cultivars in an attempt to determine the relationships among factors involved in the improvement of oat quality. Mean percent protein of the progenies was intermediate between their parents. Transgressive segregation was present for both percent protein and yield in four crosses. The possibility of simultaneous improvement of these characteristics is suggested.

Simple correlation coefficients indicated percent protein was positively associated (P<.01) with characters typical of A. sterilis. Regression analysis indicated yield had the most influence on percent protein of the characters studied

Key Words: Avena sterilis • Avena sativa • Oat Quality

1 Contribution from the Plant Science Department, South Dakota State University, Brookings. Portion of a thesis submitted by the senior author in partial fulfillment of the requirements for the M.S. Degree. This research was supported by the Quaker Oats Company, Chicago, 111., and USDA. Journal Paper No. 1164.

2 Superintendent, Agronomy Seed Farm, Casselton, ND 58012; Professor of Agronomy, Department of Plant Science, Utah State University, Logan, UT 54321; and Professor of Plant Science, Plant Science Dept., South Dakota State University, Brookings, SD 57006.

Received for publication May 11, 1973.




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