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Published in Crop Sci 9:581-583 (1969)
© 1969 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Morphological and Chemical Characteristics of Inbred Lines of Tall Fescue Selected for Palatability to Cattle1

R. C. Buckner, P. B. Burrus and J. R. Todd2

Three tall fescue (Festuca arundinacea Schreb.) inbred lines, previously selected for their improved palatability to cattle, were compared for crude protein, total sugars, silica, and several morphological characters when grown in a spaced-plant nursery during 1964-1967. Significant differences were found between parents and their S3 or S4 progenies for all chemical constituents studied. while previous studies indicated that the lines were characterized by improved palatability (4), the cattle apparently did not select high or low content of crude protein, silica, or total sugars

Variability of S4 lines for the three chemical constituents indicated the possibility of developing cultivars higher in total sugars and lower in silica than S0 parents.

Inbreeding depressed the number of panicles per plant, seed per panicle, culm height, panicle and ray length which resulted in reduced yields of forage and seed of the S3 and S4 lines.

It was concluded that four generations of inbreeding in tall fescue were probably sufficient to attain the desired uniformity for the characters studied.

Key Words: Crude protein • Total sugars • Silica • Inbreeding depression • Forage yield • Seed yield

1 Cooperative investigation at Lexington, Ky., of the Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, the Department of Agronomy, Kentucky Agricultural Experiment Station. The investigation reported in this paper (69-3-4) is in connection with a project of the Kentucky Agr. Exp. Sta. and is published with approval of the Director.

2 Research Agronomist, Crops Research Division, ARS, USDA, University of Kentucky, Lexington 40506; Research Assistant, Crops Research Division, ARS, USDA; and Research Specialist, Department of Agronomy, University of Kentucky

Received for publication January 22, 1969.




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