Hayes and Garber - Cucurbit Breeding

RESULTS OF SELECTION WITH SELF-FERTILIZED CROPS 129
tance may be improved by selection. The illustration below,
taken from Williams (1916), shows clearly what has been accomplished
at the Ohio Station in the way of isolating a strain with
stiff straw. The three pure lines shown are selections from the
commercial variety Fultz.
FIG. 26. Variation in stiffness of straw in pure line selections of Fultz wheat.
(After C. G. Williams.)
OAT SELECTIONS
The Maine Experiment Station has made somewhat extensive
studies of pure lines in oats (Surface and Zinn, 1916). The
yields of commercial varieties were compared with that of their
respective pure-line selections. In Table XXVIII are given a
part of the data reported in Maine Agricultural Bulletin 250.
The average of the seven pure lines of Banner for the entire
period of the test is 81 bu. per acre, while that of the commercial
Banner is 79.7 bu. The average difference for the period of
the test between commercial Irish Victor and the four pure lines
is nearly 6 bu. per acre.