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Thesis (M.S.)—University of Nebraska—Lincoln, 1968. Department of Agronomy.


Copyright 1968, the author. Used by permission.


Blue grama, Bouteloua gracilis (H. B. K.) Lag., is a native perennial, warm-season grass of the tribe Chlorideae. A review of literature indicated that blue grama was an important grass with a wide range of adaptation. A relatively small amount of autecological research has been done with this species. The object of this study was to determine the effects of temperature and daylength on the growth and development of the species. The particular areas of interest were the growth and development of the vegetative tillers and the reproductive culm. The main study was carried out at the Scotts Bluff Experimental Range in 1967.

An individual blue grama plant is defined and illustrated. The growth and development of various morphological structures are discussed and presented in pictures.

The total height of the plant was recorded over a collection period of twenty weeks. These data are presented graphically and with pictures. The critical temperatures for germination of caryopses, growth of established plants, and renewal of growth of winter dormant plants were established. A stoloniferous blue grama plant is described and illustrated.

Advisor: Donald F. Burzlaff