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GROWTH‐PHYSIOLOGY, SALT‐TOLERANCE AND MINERAL NUTRITION OF CENTAURIUM LITTORALE (TURNER) GILMOUR: ADAPTATIONS TO ITS OLYGOTHROPHIC AND BRACKISH HABITAT
Author(s) -
Freijsen A. H. J.
Publication year - 1971
Publication title -
acta botanica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 0044-5983
DOI - 10.1111/j.1438-8677.1971.tb00201.x
Subject(s) - nutrient , brackish water , salinity , biology , shoot , botany , zoology , ecology
SUMMARY Centaurium littorale was cultured under various conditions of nutrient availability, salinity and pH. The mineral composition of the experimental plants and of plants from a field site was investigated. The highest relative growth rate observed was 0.02 mg.mg. −1 day −1 and the shoot: root ratio was 0.8. Optimal growth occurred at very low nutrient availability. Suction tensions below 7 atm had no strong effect on the growth rate. There was a marked accumulation of NaCl in the tissues without a negative effect on the uptake of nutrient ions. In the pH‐range 7.7–4.8 growth was equal. In its growth physiology and mineral nutrition Centaurium littorale is well adapted to the habitat: the brackish and poor young dune soil.