Investigation on the Assimilation of Nitrogen by Maize Roots and the Transport of Some Major Nitrogen Compounds by Xylem Sap

S. Ivanko, J. Ingversen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The uptake and assimilation of nitrate and ammonia have been studied in Zea mays. Nitrogen-starved maize roots are capable of accumulating a potential capacity for nitrogen uptake and assimilation. Reestablishment of nitrogen supply leads to intense uptake, reaching 154 % of the reference variant level after 24 hours when nitrate is supplied, and 121 % when ammonia is supplied. After 24 hours the insoluble nitrogen fraction accounts for 80, 54 and 55 % of the total taken up in the PK + NO3-, PK + NH4+ and NPK variants respectively.
    Original languageEnglish
    JournalPhysiologia Plantarum
    Volume24
    Pages (from-to)59-65
    ISSN0031-9317
    DOIs
    Publication statusPublished - 1971

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