Abstract
Plants grown on calcareous soils under drought conditions often have reduced productivity because of limited availability of mineral nutrients and water in soil. The objective of this research was to study the effect of mycorrhizal colonization on the growth and nutrient acquisition of soybean (Glycine max (L.) Merill cv. Marble-Arrow) plants under drought conditions. The study tested specifically the hypothesis that arbuscular mycorrhizal fungi can increase plant nutrient uptake even at a relatively high supply of soil P, and that this effect is relatively greater in dry soil than in well watered soil. At harvest, plants grown under drought conditions had decreased total biomass compared to well watered plants. Arbuscular mycorrhizal (AM) plants under drought conditions had signifiicantly higher P and Zn concentrations and contents in shoots compared to non-mycorrhizal (nonAM) plants. In contrast, shoot P concentrations and total P content were not increased in AM plants under well watered conditions. Improved drought tolerance of AM soybean plants can be due to increased uptake of immobile ions such as P and Zn.
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© 2003 Springer Fachmedien Wiesbaden
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Barus, H., George, E. (2003). Growth and mineral nutrient acquisition of mycorrhizal soybean grown on a calcareous soil under drought stress conditions. In: Merbach, W., Hütsch, B.W., Wittenmayer, L., Augustin, J. (eds) Prozessregulation in der Rhizosphäre. Vieweg+Teubner Verlag, Wiesbaden. https://doi.org/10.1007/978-3-663-07809-8_14
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DOI: https://doi.org/10.1007/978-3-663-07809-8_14
Publisher Name: Vieweg+Teubner Verlag, Wiesbaden
Print ISBN: 978-3-519-00447-9
Online ISBN: 978-3-663-07809-8
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