PT Journal
AU Scherer, H
   Pacyna, S
   Manthey, N
   Schulz, M
TI Sulphur supply to peas (Pisum sativum L.) influences symbiotic N<sub>2</sub> fixation
SO Plant, Soil and Environment
PY 2006
BP 72
EP 77
VL 52
IS 2
DI 10.17221/3348-PSE
DE peas; sulphur supply; carbohydrates; symbiotic N2 fixation
AB 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 N<sub>2</sub> 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 N<sub>2</sub> fixation and a reduced yield formation.
ER