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Thesis (M.S.)--University of Nebraska--Lincoln, 1957. Department of Agronomy.


Copyright 1957, the author. Used by permission.


This study was conducted to determine: (1) the yield heterosis exhibited in variety crosses of 12 adapted open-pollinated corn belt varieties, (2) the relative general and specific combining ability of these varieties, (3) the effect of variety crossing on moisture in grain at harvest, root lodging, stalk lodging, and dropped ears for these varieties, and (4) the varieties which are potential source material for a reciprocal recurrent selection program.

Ten adapted open-pollinated corn belt varieties, two synthetic varieties developed from two of the open pollinated varieties, the 66 possible variety crosses among these 12 varieties, and a hybrid check (U.S. 13) were planted in yield tests at two locations in 1955 and again in 1956. One location was near Lincoln in Eastern Nebraska and the other location was near Axtell in Central Nebraska.

Advisor: Charles O. Gardner.