SODIUM RELATIONS IN DESERT PLANTS

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Abstract
Maximum growth over a period of 3 months of Atriplex hymenelytra (Torr.) Wats. (desert holly) in solution culture was obtained when the nutrient solution contained 5 × 10-2N NaCl. Sodium concentrations in leaves at maximum yield was 7.88% and that of Cl was also 7.88%. In the presence of 10-2N Na2SO4, there was much less growth than with 10-2N NaCl. The highest NaCl level depressed levels of K, Ca, and Mg in leaves, stems, and roots. The highest NaCl level also decreased levels of micronutrients in many of the plants. Maximum growth over a period of 3 months of Atriplex hymenelytra (Torr.) Wats. (desert holly) in solution culture was obtained when the nutrient solution contained 5 × 10-2N NaCl. Sodium concentrations in leaves at maximum yield was 7.88% and that of Cl was also 7.88%. In the presence of 10-2N Na2SO4, there was much less growth than with 10-2N NaCl. The highest NaCl level depressed levels of K, Ca, and Mg in leaves, stems, and roots. The highest NaCl level also decreased levels of micronutrients in many of the plants. © Williams & Wilkins 1982. All Rights Reserved.

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