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Time course of the fraction of postdefoliation C (A) and postdefoliation N (B) in functionally distinct zones of regrowing tillers of perennial ryegrass during the first 8 d of regrowth after severe defoliation: IM-AE (○), EX-AE (▾), EN-FE (▿), EX-FE (▪), and TB (•). For definition and designation of zones, see legends for Figures 1 and 2. Vertical bars indicate ±sd (n = 4).
