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Published online 27 May 2005
Published in Crop Sci 45:1249-1255 (2005)
© 2005 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Relationships among Agronomic Traits and Grain Composition in Oat Genotypes Grown in Different Environments

David M. Petersona,*, Darrell M. Wesenbergb, Dave E. Burrupb and Charles A. Ericksonb

a USDA-ARS, Cereal Crops Research Unit, 501 Walnut St., Madison, WI 53726 and Department of Agronomy, University of Wisconsin-Madison
b USDA-ARS, Small Grains and Potato Germplasm Research Unit, 1691 S 2700 W, Aberdeen, ID 83210



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Fig. 1. Genotype x environment biplots from principal component analysis for protein and oil. Numerals refer to genotypes as listed in Table 1. Environments are represented by symbols. Trials are shown by different shapes (Aberdeen, circle; Tetonia irrigated, square; Tetonia dryland, triangle) and years by different shades (1999, black; 2000, white; 2001, gray). The percentages indicate the amount of explained variance accounted for by PC1 and PC2. Note: the 1999 environments (black symbols) are obscured by the 2001 ones (gray symbols) in the oil plot.

 





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