Sulphur supply to peas (Pisum sativum L.) influences symbiotic N2 fixation

H.W. Scherer, S. Pacyna, N. Manthey and M. Schulz
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H.W. Scherer: Agricultural Faculty of the University of Bonn, Germany
S. Pacyna: Agricultural Faculty of the University of Bonn, Germany
N. Manthey: Agricultural Faculty of the University of Bonn, Germany
M. Schulz: Agricultural Faculty of the University of Bonn, Germany

Plant, Soil and Environment, 2006, vol. 52, issue 2, 72-77

Abstract: In a pot experiment (culture substrate: perlite with a granulometric composition 0-3 mm) with peas (Pisum sativum L.) we studied the influence of sulphur supply on S and N concentrations, yield formation, symbiotic N2 fixation and available amounts of glucose and sucrose. Under S deficiency conditions S and N concentrations as well as the amounts of glucose and sucrose in shoots and nodules were significantly reduced. We assume that the reduced amounts of available photosynthate with suboptimal S supply could become limiting to energy production and as carbon skeletons for ammonia assimilation, and therefore cause a lower N2 fixation and a reduced yield formation.

Keywords: peas; sulphur supply; carbohydrates; symbiotic N2 fixation (search for similar items in EconPapers)
Date: 2006
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:52:y:2006:i:2:id:3348-pse

DOI: 10.17221/3348-PSE

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