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Abstract

 

This article in AJ

  1. Vol. 50 No. 12, p. 757-760
     
    Received: Apr 14, 1958


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doi:10.2134/agronj1958.00021962005000120012x

Vector Representation of Biologic Fields of Force1

  1. J. E. Grafius and
  2. R. L. Kiesling2

Synopsis

Synopsis

A vector method was developed to describe planes of force due to the interaction of a set of genotypes and the environment. Vector analysis was used to estimate the effect of a disease and of night temperature on sets of genotypes. The effect of mildew on barley was described in terms of an angle θ from a given axis which represented the severity of the epiphytotic, and in terms of the degree of determination by the forces in the so-called mildew plane.

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