As far as is possible I have combined information derived from the work of two research groups in order to describe an idealized plant. Professor E. W. Yemm's group at Bristol, with which 1 was associated for over 20 years, carried out in the period 1945-60 a fairly extensive investigation of the amino acid metabolism of barley (Hmdeum distichon Spratt Archer), while more recently Dr J. S. Pate and his colleagues at Belfast have provided us with a most comprehensive description of the synthesis

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... of amino acids and carbohydrates in the field pea (Pisum arvense). Much of this work has been reviewed by Yemm & Folkes (1958) and Pate (1968). These two series of investigations are complementary, both because of the very different character of the plants involved and because of the use by the Bristol group of 15N as a tracer while the Belfast group used exclusively 14C. https://www.cambridge.org/core/terms. https://doi.