Hayes and Garber - Cucurbit Breeding

MAIZE BREEDING 193
Chemical Composition. The classical selection experiments
of the University of Illinois for the purpose of isolating high and
low protein, and high and low oil strains, are well known. They
prove conclusively that strains differing in chemical composition
Table XLI gives the results for
may be isolated by selection.
15 years' selection. This information was obtained through the
kindness of Professor L. H. Smith.
Progress during the latter years of the experiment has not been
so rapid as during the early years, which is probably because the
genetic limit for high and low protein and high and low oil pro-
TABLE XLI. A. RESULTS OF SELECTING MAIZE FOR HIGH AND FOR Low
PROTEIN CONTENT RESPECTIVELY
Average Percentage Protein in Crop Each Generation
Year