Abstract
Six woody plant species, (Atriplex lentiformis, Acacia ampliceps, Conocarpus erectus, Conocarpus erectus var. sericeus, Laguncularia racemosa, and Thespesia populnea) different in age, were grown in the field and irrigated with saline water (25 ppt). The physiological performance of these species was measured. Some macro- and micro-elements, carbohydrates, protein, proline, and photosynthetic pigments were estimated in the plants. The obtained results indicated in most cases, that age of plants has no effect on nutrients, protein, or carbohydrate concentrations. For each plant species, there were some differences in the chemical composition of the leaves and stems. No significant differences were detected in Mg and Mn concentrations in leaves and stems of all studied species. Photosynthetic pigments and proline concentrations were different depending on the plant species and age. The air and leaf temperature differentials, leaf conductance, and transpiration rate were also discussed. The overall growth and physiological performance of these plants was good.
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