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Sclerospora sorghi in Corn: its Location in Carpellate Flowers and Mature Seeds. B. L. Jones, Assistant Professor, Texas A&M University Agricultural Research and Extension Center, Weslaco, Texas 78596; J. C. Leeper(2), and R. A. Frederiksen(3). (2)(3)Technician, and Associate Professor, respectively, Department of Plant Sciences, Texas A&M University, College Station, Texas 77843. Phytopathology 62:817-819. Accepted for publication 14 February 1972. DOI: 10.1094/Phyto-62-817.

Hyphae were observed in the style, ovary wall, and nucellus of carpellate flowers of Zea mays inoculated with Sclerospora sorghi. The fungus was confined in mature seeds to the pericarp and pedicel. The embryo and endosperm were protected from the fungus by the aleurone layer which appeared to serve as a barrier. Infected plants developed from infected seeds planted when in the soft dough stage. Transmission was prevented by reducing moisture content to 9% and by storage for 40 days before planting.

Additional keywords: downy mildew, seed-borne.