Crop Science Journal of Natural Resources and Life Sciences Education
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Published in Crop Sci 23:1047-1052 (1983)
© 1983 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Evaluation of Avena sativa L./A. fatua L. Progenies for Agronomic and Grain Quality Characters1

J. J. Luby and D. D. Stuthman2

The F4-derived lines from eight Avena sativa L./A. fatua L. crosses were evaluated with their parents and check cultivars to determine whether A. fatua might contribute useful variation for improving agronomic and grain quality characters in cultivated oats. Certain A. fatua lines should be able to contribute genes for increased grain yield to A. sativa All crosses produced lines that equaled or exceeded A. sativa parents or check cultivars. Progeny means for grain yield were related to the heading date and grain yield of A. fatua parents. High groat oil percentage in A. fatua parents( 9.1 to 11.5%a) and progenies, and high heritability estimates(88 to 98%), indicated A. fatua could be used to increase oil levels in cultivated oats. Though parents did not differ for groat protein percentage, all crosses had variation among lines indicating A. fatua may have different genes for this trait than A. sativa. Groat oil percentage and groat protein percentage tended to be negatively correlated. However, crosses with high means for botht raits were identified. In contrast to the relationships of their parents, progeny lines with dark seed color or shattering habit were earlier, shorter, and higher for harvest index, and lower in groat oil percentage than light-colored or nonshattering lines. Dark seed color and shattering were also associated with lower groat percentage and lower groat protein percentage. Few, if any, A. sativa/A. fatua progeny were even minimally acceptable for seed quality, height, maturity, and crown rust (Puccinia coronata Cda.f.sp. avenae Fraser and E. Led.)resistance. Further crossing to appropriate A. sativa genotypes would help alleviate these deficiencies.

Key Words: Oats • Introgression • Genetic diversity • Yield • Oil • Protein • Seed weight • Groat percentage

1 Contribution from the Dep. of Agronomy and Plant Genetics, Univ. of Minnesota, St. Paul, MN 55108. Paper no. 13,225 Scientific Journal Series, Minnesota Agric. Exp. Stn. Part of a thesis submitted by the senior author in partial fulfillment of the requirements for the Ph.D. degree. The financial assistance of the Quaker Oats Co. is gratefully acknowledged.

2 Former research assistant (currently assistant professor, Dep. of Horticultural Science and Landscape Architecture, Univ. of Minnesota) and professor, respectively.

Received for publication December 23, 1982.




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Copyright © 1983 by the Crop Science Society of America.