biostudies-literatureUnknown12(1)Moran Lauter ANBecause corn pollen can be carried great distances by wind, maintaining genetic purity of corn grain is challenging. The challenge is substantially reduced in popcorn, which carries the Ga1-s allele preventing pollination by ga1 plants, which include the vast majority of non-popcorn commercial maize varieties in the U.S.. Ga1-s can be transferred into dent corn but the effectiveness of the Ga1-s allele in popcorn and dent corn has never been compared, which is important because each are regulated differently regarding GMO contamination. We compared pollen exclusion of commercial popcorn hybrids, Ga1-s dent corn hybrids and normal dent corn hybrids for their ability to exclude ga1 pollen using a sensitive field-based assay. While both popcorn and Ga1-s dent corn had significantly better polScientific reports20809https://www.ebi.ac.uk/biostudies/studies/S-EPMC9718820biostudies-literatureThe maize Ga1-s allele confers protection against ga1 pollen in popcorn and dent corn.PMC9718820Edwards JWScott MPMoran Lauter ANfalseThe maize Ga1-s allele confers protection against ga1 pollen in popcorn and dent corn.Because corn pollen can be carried great distances by wind, maintaining genetic purity of corn grain is challenging. The challenge is substantially reduced in popcorn, which carries the Ga1-s allele preventing pollination by ga1 plants, which include the vast majority of non-popcorn commercial maize varieties in the U.S.. Ga1-s can be transferred into dent corn but the effectiveness of the Ga1-s allele in popcorn and dent corn has never been compared, which is important because each are regulated differently regarding GMO contamination. We compared pollen exclusion of commercial popcorn hybrids, Ga1-s dent corn hybrids and normal dent corn hybrids for their ability to exclude ga1 pollen using a sensitive field-based assay. While both popcorn and Ga1-s dent corn had significantly better pol2022-01-01T00:00:00Z2022 Dec2025-04-05T10:34:08.711Z2025-04-05T10:34:08.711ZS-EPMC97188203646074410.1038/s41598-022-25261-8