Fig. 1. Means of smooth bromegrass selection cycles in spring, summer and fall harvests averaged over 2 yr. The traits are neutral detergent fiber (NDF), acid detergent fiber (ADF), and acid detergent lignin (ADL) on a dry-matter basis and dry matter yield. The horizontal axes (cycle) are scaled by the expected genetic gains of recurrent selection for NDF. The least significant difference (LSD) applies to comparisons between cycles within harvests

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