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Heritability of Factors Affecting Malting Quality of Barley, Hordeum vulgate L., emend. Lam¹

The feasibility of making selections in the F₂ and F₃ generation on the basis of prediction tests of barley quality was evaluated. Prediction tests made on F₂ generation material were found to be unsatisfactory as a measure of quality of the F₃ generation, based on heritability estimates and correlation coefficients. Heritability estimates obtained using variance components in the F₃ generation were high and indicated that progress should be possible when selecting for nitrogen, extract, or diastatic power in this generation. Correlation coefticients among the three quality factors showed that extract was negatively associated with nitrogen and with diastatic power and that nitrogen and diastatic power were positively associated

Key Words: prediction tests • correlations

² Associate Professor and Professor of Agronomy, and Associate Professor of Cereal Technology, respectively, North Dakota State University, Fargo.

Received for publication May 23, 1967.