This is a preview. Log in through your library . Abstract Well-nodulated, water-cultured soybean plants were allowed to assimilate 13CO2 at a constant specific activity for 10 h and the 13C-labelling ...
Feeding experiments using 15N2 or 15NO3 are described investigating the transport of nitrogen in the field pea (Pisum arvense L.). Nitrogen assimilated by root or nodules moves preferentially upwards ...
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