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Agricultural Fitness of Smooth Bromegrass Populations Selected for Divergent Fiber Concentration

USDA-ARS, U.S. Dairy Forage Research Center, Madison, WI 53706-1108

View larger version (28K): [in this window] [in a new window]   Fig. 1. Correlated linear selection responses (solid lines) and asymmetry effects (dotted lines) for forage yield in the first three production years measured on four smooth bromegrass populations subjected to one cycle of divergent phenotypic selection for divergent neutral detergent fiber (NDF) concentration. Each data point represents an average over four replicates and three locations.

View larger version (28K): [in this window] [in a new window]   Fig. 2. Correlated linear selection responses (solid lines) and asymmetry effects (dotted lines) for survival, seed yield, and lodging measured on four smooth bromegrass populations subjected to one cycle of divergent phenotypic selection for divergent neutral detergent fiber (NDF) concentration. Each data point represents an average over four replicates, three locations, and (for seed yield and lodging) 3 yr.