Seed Proteins of Peas in Relation to Nitrogen Fixation

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Abstract
The influence of the source of nitrogen on the amount and composition of the seed protein has been examined. The plants were grown in sterile compost and those that had received their nitrogen as ammonium nitrate compared with those in which nitrogen fixation occurred in the root nodules. The absence of nodules in the former and the presence of nitrogen fixation in the latter was confirmed. The source of nitrogen did not affect the amounts of extractable seed protein, the proportions of the different fractions or their composition.