Journalartikel

Jahr der Veröffentlichung: 2016

Seiten: 775-783

Zeitschrift: Journal of Plant Nutrition and Soil Science

Bandnummer: 179

Heftnummer: 6

ISSN: 1436-8730

DOI Link: https://doi.org/10.1002/jpln.201500565

Verlag: Wiley-VCH Verlag

Abstract: 
Maize plants (Zea mays L. cv. Pioneer 3906) were grown in hydroponics with four different NaCl treatments (control, 50, 100, 150 mM NaCl). Nitrogen (N) was supplied as 2 mM Ca(NO3)(2) in the fully concentrated nutrient solution. Plants of half of the pots were treated with additional 1 mM NH4NO3 2 d after start of the NaCl application. After 23 d, the maize plants were harvested and contents and concentrations of nitrate, reduced N as well as chloride were determined in shoots and roots. With increasing NaCl stress net nitrate uptake and net root-to-shoot translocation of total N decreased significantly. Under salt stress, decreased nitrate concentrations in shoots probably caused substrate limitation of nitrate reductase. However, the concentrations of reduced N in shoots were not affected by salt stress and no N deficiency was observed. Additional N application to the 100 and 150 mM NaCl treatments did not improve plant growth. A Cl-/NO3- antagonism was only weakly pronounced, probably because of the Cl-exclusion ability of maize. Thus, although net uptake and net translocation of total N were markedly decreased by NaCl application, the smaller maize plants nevertheless took up enough N to meet their demand pointing to other growth-limiting factors than N nutrition.

Harvard-Zitierstil: Hütsch, B., He, W. and Schubert, S. (2016) Nitrogen nutritional status of young maize plants (Zea mays) is not limited by NaCl stress, Journal of Plant Nutrition and Soil Science = Zeitschrift für Pflanzenernährung und Bodenkunde, 179(6), pp. 775-783. https://doi.org/10.1002/jpln.201500565

APA-Zitierstil: Hütsch, B., He, W., & Schubert, S. (2016). Nitrogen nutritional status of young maize plants (Zea mays) is not limited by NaCl stress. Journal of Plant Nutrition and Soil Science = Zeitschrift für Pflanzenernährung und Bodenkunde. 179(6), 775-783. https://doi.org/10.1002/jpln.201500565