Nitrate accumulation by wheat (Triticum aestivum) in relation to growth and tissue N concentrations

Zhen, R. G.; Leigh, R. A.

doi:10.1007/978-94-009-0585-6_3

R. G. Zhen² &
R. A. Leigh²

Part of the book series: Developments in Plant and Soil Sciences ((DPSS,volume 41))

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Abstract

The accumulation of nitrate in relation to total N concentrations ([N]_i) in tissues of wheat (Triticum aestivum L., cv Sicco) grown in solution culture was investigated. Root, shoot and leaf tissues showed qualitatively similar relationships between internal nitrate concentrations and [N]_i both expressed on a tissue water basis. At low [N]_i no nitrate was detectable but once a particular [N]_i was exceeded, nitrate accumulated as a linear function of [N]_i The threshold [N]_i values for nitrate accumulation were 110, 450, and 550 mM for roots, total shoot and leaf 4, respectively. The slope of the relationship between nitrate and [N]_i indicated that in all tissues nitrate accounted for 50–55% of the extra N accumulated above the threshold [N]_i. All growth requirements for N were satisfied before nitrate accumulated.

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Authors and Affiliations

AFRC Institute of Arable Crops Research, Rothamsted Experimental Station, Harpenden, Herts, AL5 2JQ, UK
R. G. Zhen & R. A. Leigh

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R. G. Zhen
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R. A. Leigh
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Editors and Affiliations

Department of Soil Science and Plant Nutrition, Wageningen Agricultural University, Wageningen, The Netherlands
M. L. van Beusichem

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Zhen, R.G., Leigh, R.A. (1990). Nitrate accumulation by wheat (Triticum aestivum) in relation to growth and tissue N concentrations. In: van Beusichem, M.L. (eds) Plant Nutrition — Physiology and Applications. Developments in Plant and Soil Sciences, vol 41. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0585-6_3

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DOI: https://doi.org/10.1007/978-94-009-0585-6_3
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-6751-5
Online ISBN: 978-94-009-0585-6
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