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Chemical Element Accumulation by Populations of Corn (Zea mays L.) Selected for High and Low Accumulation of P

Baker, D. E., Wooding, F. J., Johnson, M. W.
Agronomy journal 1971 v.63 no.3 pp. 404-405
botany, Plant Science and Plant Products
The objective of the investigation of which this report is a part was to identify chemical elements, organic compounds, or metabolic processes which are associated with genetically controlled P accumulation in corn (Zea mays L.). Two populations of corn, each with subpopulations selected for high and low P in ear leaves, were produced by randomly sib mating the F₂ and five and six subsequent generations of an early maturing single-crossed hybrid and a late maturing single-cross hybrid. Each tingle-cross hybrid contained homozygous inbred lines previously characterized as contributors of low and high concentrations of P to other single-cross hybrids. In ear leaves, high P was associated with significantly higher, but not substantially different, concentrations of N and B. In seedling plants, grown for three weeks in a growth chamber, high accumulation of P was associated with higher concentrations of N and significantly higher concentrations of S, Ca, Cu, and B.