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Iron Uptake Dependent upon Genotype of Corn
Author(s) -
Brown J. C.,
Bell W. D.
Publication year - 1969
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1969.03615995003300010027x
Subject(s) - chlorosis , nutrient , zea mays , phosphate , chemistry , agronomy , zoology , horticulture , biology , biochemistry , organic chemistry
Genetic variants are responsible for a differential uptake of Fe by ys 1 and Pa 54 corn ( Zea mays ). Different degrees of iron stress were developed in the plants by supplying them with increasing amounts of FeHEDTA. Iron stress enhanced Fe uptake more in Pa 54 than in ys 1 corn. Enhanced Fe uptake was also associated with the ability of the plant to lower the pH of the nutrient solution, Pa 54 > ys 1 . Uptake of P was accentuated more in ys 1 than Pa 54 by adding CaCO 3 , or by adding KCl instead of K 2 SO 4 as a source of K to the nutrient solution. Phosphate reduced Fe uptake more in ys 1 than in Pa 54, and increased the incidence of chlorosis in ys 1 .