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Field Drying of Flint and Dent Endosperm Maize¹

Flint and dent endosperm type versions of several hybrids were grown under field conditions to determine the effects of endosperm type on field drying rate following physiological maturity. The results indicated there was no inherent major difference in field drying rate between the flint and dent endosperm types. This does not suggest that all flint endosperm material has equivalent drydown rates to the dent germplasm so widely used in North America. However, the findings do suggest that the flint endosperm type per se is not responsible for slow drydown in the field. In this study the dent hybrids were found to have a higher moisture level at physiological maturity than the flint hybrids.

Key Words: Zea mays L. • Maturity • Drying rate • Moisture loss • Endosperm type • Short-season corn

² Associate professor, Univ. of Guelph, research scientist, Harrow Res. Stn., crop research coordinator, Cargill Res. Dep., and professor, Unix. of Guelph.

Received for publication November 1, 1978.

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