Registration of germplasms, cultivars, parental lines, and genetic sto
cks in Crop Science provides recognition to scientists that develop an
d document these plant materials. During 1987 through 1993, 8.5% of Cr
op Science registrations were of foreign origin. Among these, 26% were
quarantine-restricted. The purpose of this report is to provide guide
lines to foreign contributors of quarantined plant germplasm for Crop
Science registration. Seeds of several crop genera from other countrie
s that might be registered are in the prohibited quarantine category a
nd can be introduced only under permit. Examples include the crop gene
ra Arachis, Gossypium, Oryza, Pennisetum, Sorghum, Triticum, and Zea.
Send samples of clean, untreated seeds and associated information to t
he USDA Plant Germplasm Inspection Station, Bldg. 580, BARC-East, Belt
sville, 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 othe
r than Crop Science registration.