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These data support the idea that leaf growth drives the dynamics of …


Biology Articles » Botany » Developmental changes in shoot N dynamics of lucerne (Medicago sativa L.) in relation to leaf growth dynamics as a function of plant density and hierarchical position within the canopy » Figures

Figures
- Developmental changes in shoot N dynamics of lucerne (Medicago sativa L.) in relation to leaf growth dynamics as a function of plant density and hierarchical position within the canopy

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Fig. 1. Changes of the shoot N amount (mg plant–1) as a function of the changes in the shoot dry matter (mg plant–1) during the growth process in lucerne plants grown under hydroponic conditions at low density (20 or 40 plants m–2). Density of 40 (—–) or 20 (----) plants m–2.

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Fig. 2. Linear regression relationship between the accumulation of shoot N and the development of leaf area (LA) during the growth process in lucerne plants grown under hydroponic conditions at low density (40 plants m–2).

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Fig. 3. Relationship between shoot N accumulation and crop LAI expansion during a regrowth process of a lucerne stand under field conditions at high density.

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Fig. 4. Relationship between ln N concentration in shoot and ln shoot dry matter (A) and relationship between ln leaf dry matter and ln shoot dry matter (B) in plants with different hierarchical positions (D, dominant; I, intermediate; S, suppressed) in the canopy of a lucerne stand during a regrowth period under field conditions at high density.

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Fig. 5. Relationship between shoot N accumulation (Nsh) and leaf mass accumulation (WL) for the different plant categories (D, dominant; I, intermediate; S, suppressed) within a dense stand.

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Fig. 6. Relationship between ln leaf dry matter and ln leaf N concentration (A), ln stem N concentration (B) and ln leaf dry matter: stem dry matter (C) for the different plant categories (D, dominant; I, intermediate; S, suppressed) within a dense stand.

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