Premium
Investigation on the Assimilation of Nitrogen by Maize Roots and the Transport of Some Major Nitrogen Compounds by Xylem Sap
Author(s) -
IVANKO S.,
INGVERSEN J.
Publication year - 1971
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1971.tb06716.x
Subject(s) - nitrogen , assimilation (phonology) , xylem , nitrogen assimilation , nitrate , chemistry , ammonia , zea mays , cell permeability , nitrogen cycle , agronomy , botany , environmental chemistry , biology , biochemistry , philosophy , organic chemistry , linguistics
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 + NO 3 ‐ , PK + NH 4 + and NPK variants respectively.