New Jersey Agricultural Experiment Station (1912)
Byron D. Halsted, Sc.D.
B. H. A. Groth, Ph.D., Earle J. Owen, M.Sc., Mary Robinson, Ph.B., Mathilde Groth.

Corn Breeding. Block No. 13.

One of the leading features of this block was the attempt to breed the so-called "Cobless" corn (row 4), upon the "Adams-Crosby" (rows 1 and 10), the "Squaw" (row 2), the "Pride-Stowell" (row 3), "Silver Mine-Country Gentleman" (row 5), "Mexican-Stowell" (row 6), "Silver Mine-Stowell" (row 7), the "Golden Rod" (row 8), and the "Late Mammoth" (row 9). This breeder is a flint corn, mixed yellow and white and produced a row of tall plants, some few of which were entirely without ears and developed a tassel of unusual character that soon became bowed with its weight of grain. At 1 (Plate V) is shown one of these tassels in its drooping position, the branches of which are loaded with nearly spherical grains, quite indistinctly shown among the bracts. The major portion of the plants in the row, however, had side branches (ears), and their tassels were of the ordinary sort.

The true ears, with husks, etc., varied greatly in size and shape, some being very short, nearly as broad as long; while others were even more slender than corn ears generally, as illustrated at 2 and 8, respectively. Again, the huskiness was subject to great variation, for in some ears the grains were encased in husks that were four centimeters long, as shown at 3 and 4; while others had the husks so short that the grains were partly in sight, as seen at 6, 7 and 8. As a rule, the husks were longer near the butt end of the ear, as is well shown in the very long slender ear at 8, with its weather-stained tip due to its ear-husks not being long enough to cover it, a condition that obtained in several cases. At 9 is shown an ear from the same lot of seed in which the tendency to produce a tassel is seen at the tip, while at 10 a normal ear from cobless seed is photographed. In short, in this lot of seed with parentage unknown to the writer, there resulted all gradations between the earless stalk with large seed-bearing tassel, through various degrees of husk development to an ear of the ordinary sort. Some crossing with sweet corn had taken place.

Crossed Corn. The "Cobless" corn is shown in several of its phases of development. At 1 is the true type, a tassel filled with grains. From 2 to 10 are shown different degrees of development of the husk grains, some ears having their husks very long and others with theirs entirely absent.