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Comparison of Pollination Methods in Maize¹

Paired-row plantings of maize (Zea mays L.) with different endosperm colors were made to compare pollinations made from tassels bagged overnight with pollinations made by shaking a tassel into a bag just prior to pollination. Outcrosses were determined by xenia effects on kernel color. The superiority of bagged over open (unbagged) tassels was clearly evident among hybrids but the two methods were not so distinctly different for inbreds. Tearing tops from shoot bags at pollination significantly reduced contamination. If plants are short or are inbred sufficiently that outcrosses can be accurately identified, pollinations can be made more efficiently without tassel bagging and an acceptable level of outcrosses can be maintained. However if plants are tall, or if freedom from outcrosses is of major importance, bagging tassels overnight and tearing tops from shoot bags at pollination appears to be the most reliable technique.

Key Words: Pollen control • Pollination technique • Outcrosses • Seed set • Corn • Zea mays L.

² Professor of agronomy, Virginia Polytechnic Institute and State Univ.

Received for publication July 12, 1975.