4. Genetic control of floral structures in corn-grass.

A series of genetic modifiers for the corn‑grass have been discovered. The resultant genetic types form a continuous series from a proliferous non-flowering mass of tillers on one extreme to a single stalked corn plant typical of modern maize on the other end. This series under direct genetic control is similar to the one which Dr. W.R. Singleton found would develop in the unmodified stocks when grown under special environmental conditions. The extreme types of corn‑grass involve the fundamental plan of development of Zea Mays and so point out the importance of Mendelian genes in the control of important taxonomic differences.

W. C. Galinat