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This article in AJ

  1. Vol. 87 No. 6, p. 1225-1227
    Received: Nov 18, 1994

    * Corresponding author(s): piepho@wiz.uni-kassel.de
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Assessing Cultivar Adaptability by Multiple Comparison with the Best

  1. Hans-Peter Piepho 
  1. Fac. of Agriculture, Univ. of Kassel, Steinstrasse 19, 37213 Witzenhausen, Germany



Regional yield trials are conducted to identify cultivars that are well adapted to specific environments. This note proposes application of a multiple comparison procedure for assessing cultivar adaptability. A cultivar is regarded as adapted if it does not differ from the best by more than some prespecifled amount. The procedure assigns cultivars to one of three groups: (i) adapted; (ii) unadapted; and (iii) unclassified. The classification is based on simultaneous confidence intervals for the difference between all cultivars and the best cultivar. Such classification may be a useful tool for cultivar recommendations.

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