Fig. 2 Change in (a) ears per plant, (b) grains per ear, (c) grain number per square meter, and (d) grain yield with anthesis-silking interval for three selections in La Posta. A common linear regression has been fitted for the three genotypes in (a). Fitted regressions in (b), (c), and (d) are of the form in all cases. The coefficients of a and b for La Posta Sequía C₀ (solid line), La Posta Sequía C₃ (dotted line), and their related check (Pop. 43 C₉, dot-dash line) are: for (b): 6.33, -0.106; 6.24, -0.132; 6.27, -0.116; for (c): 8.19, -0.197; 8.07, -0.193; 8.10, -0.171; and for (d): 2.21, -0.247; 2.08, -0.302; 2.21, -0.238

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