Public inbred lines resistant to the heat and drought conditions encountered in the Southeast in 1977

As a part of an attempt to survey a wide range of materials for isozyme studies, about 250 public inbred lines were grown for increase last summer. These were mostly planted April 28, although 17 were planted about a week later. The full set included almost all commercially used public inbred lines of yellow and white field corn, sweet corn, and popcorn, except those from Florida, Louisiana, and the Harrow station in Canada. A number of historically important but now obsolete lines were included. A list is available on request. Most lines failed to set seed in quantity and quality sufficient for proper maintenance, despite irrigation, but several lines, scattered across maturity groupings and seed sources, did reasonably well. Since both plant breeders and geneticists may have an interest in inbreds able to better withstand extreme conditions, Table 1 summarizes the observations. (We obtained our materials, whenever possible, from the original source.)

Table 1.

M. M. Goodman and C. S. Stuber

Please Note: Notes submitted to the Maize Genetics Cooperation Newsletter may be cited only with consent of the authors.

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