Heterotic Relationships among Nine Temperate and Subtropical Maize Populations
Harold R. Mickelson*,a,
Hugo Cordovab,
Kevin V. Pixleyc and
Magnie S. Bjarnasond
a Dep. of Agronomy and Plant Genetics, Univ. of Minnesota, St. Paul, MN 55108
b CIMMYT, Apdo. Postal 6-641, 06600 Mexico D.F., Mexico
c CIMMYT, P.O. Box MP163, Mt. Pleasant, Harare, Zimbabwe
d Pioneer Genetique SARL, European Research and Development Center, 24, rue du Moulin, F-68740 Nambsheim, France

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Fig. 1. Biplot of entry performance coordinates for grain yield and environment vectors computed using the pattern analysis computer software GEBEI (Watson et al., 1996). A selected group of maize entries and the five environments are labeled. Percent variation explained by an axis is given in parentheses.
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Fig. 2. Three-dimensional relationship (principle coordinate analysis) reflecting dominance-associated distances for grain yield among nine maize varieties. Percent variation explained by an axis is given in parentheses.
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Copyright © 2001 by the Crop Science Society of America.