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This article in CS

  1. Vol. 9 No. 4, p. 457-459
     
    Received: Dec 13, 1968


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doi:10.2135/cropsci1969.0011183X000900040021x

Components of Test Weight in Soft Wheat1

  1. W. T. Yamazaki and
  2. L. W. Briggle2

Abstract

Abstract

Kernel density, a component of test weight, is not associated with variety when considering Eastern soft wheats Triticum aestivum L. em Thell. (aestivum group), but seems to be related to environment. Air spaces within the grain appear to be a major factor in determining kernel density.

Packing efficiency (the percent of bulk volume occupied by grain), the second component of test weight, is associated with variety. Grain shape and surface characteristics such as humping, dorsal or lateral depressions, and wrinkling, cause variations in void space ratio; hence they directly affect random packing efficiency.

These conclusions were based on results with normal, well-filled grain; any appreciable shriveling of grain confounds varietal and environmental effects.

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