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This article in AJ

  1. Vol. 49 No. 9, p. 506-508
    Received: Mar 11, 1957

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Biologic Measurement of Environment as an Aid in Selection1

  1. J. E. Grafius22



Two models for classifying environment using standard varieties to measure the environment were proposed. Various schemes for selection were discussed and it was shown that it is not always advantageous to save the best lines. This paradox becomes less incredible when, for example, one considers that if a variety performs well at cool night temperatures relative to another, the reverse may be true at high night temperatures. Data were presented to support this point.

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