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Improvement for Accelerated Aging Response of Seed in Maize Populations¹

Even though maize (Zea mays L.) seed has a relatively long storage life, improvement for this characteristic is desirable. My objective was to determine if the seed deterioration caused by an accelerated aging process could be reduced in maize populations using a recurrent selection breeding method. The C_o, C₁, C₂, and C₃ cycles of two populations were evaluated. Evaluation for differences among cycles of selection was made on seed aged at 42 C and 100% R. H. for either 9 or 10 days. In one population, germination in the C₃ cycle was nearly double that of the C₀ cycle. Progress in the other population was less.

Key Words: Zea mays L. Corn • Recurrent selection • Seed longevity • Germination

² Research agronomist, AR, SEA, USDA and professor of agronomy, Mississippi State Univ.

Received for publication July 14, 1980.