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Acetylene reduction (nitrogen fixation) and metabolic activities of soybean having various leaf and nodule water potentials

, : Acetylene reduction (nitrogen fixation) and metabolic activities of soybean having various leaf and nodule water potentials. Plant Physiology 56(2): 222-227

An apparatus was designed that permitted acetylene reduction by root nodules to be measured in situ simultaneously with net photosynthesis, dark respiration, and transpiration of the shoot in soybean plants. Acetylene reduction was linear with time for at least 5 hours, except for the first 30 to 60 minutes. Endogenous ethylene production did not affect the measurements. Successive determinations of acetylene reduction could be made without apparent after effects on the plant.


PMID: 16659276

DOI: 10.1104/pp.56.2.222

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