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Improving Nitrogen-Use Efficiency in European Maize

Estimation of Quantitative Genetic Parameters

^a State Plant Breeding Institute, Univ. of Hohenheim, D-70593 Stuttgart, Germany
^b AgReliant Genetics, Westfield, IN 46074, USA
^c KWS SAAT AG, 37555 Einbeck, Germany

View larger version (24K): [in a new window]   Fig. 1. Relationship between N-deficiency stress [(grain yield at HN - grain yield at LN)/grain yield at HN] and the coefficient of genotypic correlation (for Exp. 5, 6, and 20, coefficients of phenotypic correlation) between grain yield at high and low N levels. The 21 experiments are numbered as in Table 1. Regression line is shown with its 95% confidence interval (R2 = coefficient of determination of regression).