Abstract
Maize populations collected from various biotopes which differ in their degree of salinity were grown in agrolite with a nutrient solution containing 0, 20, 40, 60 and 80 mN of NaCl, for 15 days. The growth data show a wide phenotypic plasticity, and the cationic accumulation at 80 mN suggests an interesting nutritional differentiation within maize populations. The results show that the progeny of seeds collected from the non-saline soils, accumulate proportionally more sodium and less magnesium within their tissues than those populations from the saline biotopes. Furthermore the lowest accumulation of sodium and the largest accumulation of magnesium were found on populations that were genetically isolated; that is on the progeny of seeds collected from biotopes where only autopollination or pollination with plants tolerant to salts was possible. An intermediate behavior upon sodium and magnesium accumulation, was observed in the progeny of seeds collected from plants grown in the saline soils, surrounded by maize plants grown in a less saline condition. The results suggest a differential cation accumulation within maize populations that is genetically controlled. The exclusion of sodium from the tissues and, or the increased accumulation of magnesium seemed to be related to a maize adaptation strategy to salinity.
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© 1990 Kluwer Academic Publishers
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Baus, J., Cabrera, J. (1990). Cation accumulation related to adaptation of maize populations to salinity. In: El Bassam, N., Dambroth, M., Loughman, B.C. (eds) Genetic Aspects of Plant Mineral Nutrition. Developments in Plant and Soil Sciences, vol 42. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2053-8_29
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DOI: https://doi.org/10.1007/978-94-009-2053-8_29
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7421-6
Online ISBN: 978-94-009-2053-8
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