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Growth, water and nutrient status of plants in relation to patterns of variations in concentrations of dry matter and nutrient elements in base-to-top leaves

I. Distribution of contents and concentrations of dry matter in tomato plants under different growth conditions

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Summary

Patterns of variations in dry matter concentrations in tomato plants reflected production and translocation of dry matter, implying the possibility of controlling and regulating growth and development of plants by use of dry matter concentration as a useful parameter.

Dry matter concentrations, analogous to nutrient concentrations, varied depending on growth conditions, and on type, age and position of plant organs.

Interpretation of patterns of variations in contents and concentrations of leaf dry matter in plants, grown under widely different conditions, agreed with the source/sink hypothesis.

High water applications were associated with high dry matter concentrations in upper leaves of young pot plants with low sink capacity and with low dry matter concentrations in leaves of older, trough-grown plants with high sink capacity.

Accumulation of dry matter in upper leaves of plants is suggested to be associated with development of secondary sinks and, accumulation of dry matter in lateral shoots is considered as a possible explanation of apical dominance.

Water regime and transpiration influenced distribution of contents of dry and fresh matter and of absorbed nutrient elements. Redistribution was influenced by water regime.

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Authors and Affiliations

  1. Hydrotechnical Laboratory, The Royal Veterinary & Agricultural University, Copenhagen, Denmark

    Bodil Friis-Nielsen

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  1. Bodil Friis-Nielsen
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Additional information

The term, distribution is in the following used in connection with not only absolute values (contents) but also relative values (concentrations).

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Friis-Nielsen, B. Growth, water and nutrient status of plants in relation to patterns of variations in concentrations of dry matter and nutrient elements in base-to-top leaves. Plant Soil 39, 661–673 (1973). https://doi.org/10.1007/BF00264182

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  • DOI: https://doi.org/10.1007/BF00264182

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