Abstract
Registration of germplasms cultivars, parental lines, and genetic stocks in Crop Science provides recognition to scientists that develop and document these plant materials. During 1987 through 1993, 8.5% of Crop Science registrations were of foreign origin. Among the ese, 26% were quarantine‐restricted. The purpose of this report is to provide guidelines to foreign contributors of quarantined plant germplasm for Crop Science registration. Seeds of several crop genera from other countries that might be registered are in the prohibited quarantine category and can be introduced only under permit. Examples include the crop genera Arachis, Gossypium, Oryza, Pennisetura, Sorghum, Triticum, and Zea. Send samples of clean, untreated seeds and associated information to the USDAP lant GermplasmI nspection Station, Bldg. 580, BARC‐East, Beltsville, MD 20705. The number of seeds needed for quarantined‐growouts will vary depending on the class of registration. Procedures described herein generally apply to quarantined introductions for purposes other than Crop Science registration.
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