Differences in uptake kinetics of ammonium and nitrate in legumes and cereals

Rao, T P and Ito, O and Matsunaga, R (1993) Differences in uptake kinetics of ammonium and nitrate in legumes and cereals. Plant and Soil, 154 (1). pp. 67-72. ISSN 0032-079X

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Abstract

In a greenhouse experiment, influx isotherms were obtained for nitrate and ammonium from pigeonpeas cv. ICPL 87, chickpea cv. K850, groundnut cv. NCAC 17090, sorghum cv. CSH5, Pennisetum glaucum cv. WC 75 and maize cv. Ganga 5. The transition in influx isotherms for both N sources was within the concentration range (0.05-2.5 mM) tested. There were significant differences in Km and Vmax for ammonium between legumes and cereals. The difference in the kinetic properties for nitrate uptake between the 2 groups of plants only became apparent at the highest concentration tested. Legumes translocated absorbed nitrate and ammonium to shoots more rapidly than cereals

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Others > Food Legumes Others > Agriculture-Farming, Production, Technology, Economics
Depositing User:	Library ICRISAT
Date Deposited:	13 Dec 2011 10:29
Last Modified:	13 Dec 2011 10:29
URI:	http://oar.icrisat.org/id/eprint/4711
Official URL:	http://dx.doi.org/10.1007/BF00011073
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	We extend our sincere thanks to Dr C Johansen and Dr J V D K Kumar Rao for their valuable and critical evaluation of this paper. Our thanks also go to Mrs Y Gayathri Devi for the help of graphic presentation
Links:	Author

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