1957 W101Ay, W101Bx Inbred, moderately early maturity, firm, scales golden bronze and heavy, tendency to double Derived from a Rochester Bronze bulb obtained from Mr. Everett Horner of Waterford, Wis. Parent bulb homozygous for ms self-pollinated in 1950; selfed progeny grown in 1951.
1957 Golden Beauty F1 hybrid, high globe, well-rounded shoulders and base, medium sized neck, scales golden yellow and soft B2133 x B12132
1962 Nugget F1 hybrid, firm, high globe, scales copper Iowa 736 X W101
1962 Hickory F1 hybrid, round with small neck, firm scales, good scale retention Iowa 163 X W101
1964 W4A, W4B Inbred, ozone resistant, single centered, upright foliage, susceptible to pink root and fusarium Derived from B15-108 and B2267
1964 Sunburst F1 hybrid, globe shape, tipburn resistant, maturity similar to `Epoch', yield similar to Trapp's strain of `Downing's Yellow Globe', heavy scales W4A x W101B
1966 W52Cw Inbred, round firm, carries male fertility restorer alleles (MsMs), good storage quality, resistant to ozone, upright foliage Derived from `Subitch Yellow Globe' obtained from Peter Subitch of Waukesha, Wis.
1966 WD7Cv Inbred, susceptible to pink root and fusarium, g general combining ability for yield Derived from `Brown Beauty'
1967 W202A, W202B Inbred, fusarium resistant, susceptible to pink root Derived from `Rochester Bronze'
1967 W205A, W205B Inbred, pink root resistant, moderate resistance to fusarium Derived from inbred lines C72 and B2215
1967 W206C Inbred, carries restorer alleles (MsMs ), pink root resistant, moderate resistance to fusarium Pink root resistant selection from B2190
1967 W207C Inbred, carries restorer alleles

(MsMs ), pink root resistant, very resistant to fusarium

 Derived from inbred lines B2264 and B2215
1972 W404A, W404B Inbred, similar to W101 except with higher level of resistance to fusarium and browner scales Sibling of W101 (a derivative of Rochester Bronze) obtained from Mr. Everett Horner of Waterford, Wis. Also called RBW101
1972 Fusario 12 F1 hybrid, fusarium resistant W101 x W202 or the reciprocal
1972 Fusario 24 F1 hybrid, fusarium resistant W202 x W404 or the reciprocal
1972 Fusario 245 F1 hybrid, fusarium resistant Fusario 24 x W205
1972 Fusario 142 F1 hybrid, fusarium resistant (W101 x W404) x W202
1983 W407A, W407B Inbred, susceptible to pink root and fusarium, excellent seed parent and pollinator Derived from the inbred lines W202 and W4
1983 W419A, W419B Inbred, resistant to pink root and fusarium, some contorted seed stalks Derived from the inbred lines W101 and W205
1983 W420A, W420B Inbred, resistant to pink root and fusarium, some contorted seed stalks Derived from the inbred line W404 and BRB (Buckskin Rochester Bronze)
1983 W426A, W426B Inbred, susceptible to pink root and fusarium, excellent combining ability Derived from the inbred lines W202 and W205
1990 W417A, W417B Inbred, resistant to pink root and fusarium Derived from W4 and BRB
1990 W434A, W434B Inbred, intermediate pink root resistance and high level of resistance to fusarium Derived from a half-sib population composed of inbreds carrying resistance to multiple diseases
1990 W435A, W435B Inbred, susceptible to pink root, very resistant to fusarium Same ancestry as W434
1990 W438A, W438B Inbred, moderate resistance to pink root, resistant to fusarium Same ancestry as W434
1990 W439A, W439B Inbred, pink root resistance and intermediate resistance to fusarium Derived from the cross [(BRB x W404) X Sapporo Ki]
1990 W440A, W440B Inbred, intermediate pink root resistant, high level of resistance to fusarium Selected in 1984 from a synthetic population constructed in 1975 (designated OMI). OMI was synthesized from inbred lines with good seed production capability
1990 W441A, W441B Inbred, pink root resistance intermediate, resistant to fusarium Selected in 1984 from the synthetic OMI
1990 W445C Inbred, carries restorer alleles (MsMs), susceptible to pink root and fusarium Derived from a 1984 selection from Sapporo Ki x W202
1990 W446A, W446B Inbred, very resistant to pink root and fusarium Early maturing derivative of OMI
1990 W447A, W447B Inbred, very resistant to pink root and fusarium Derivative of OMI
1990 W449C Inbred, carries restorer alleles (MsMs), intermediate pink root resistance, very resistant to fusarium Derived from Sapporo Ki x (BRB x W404)
1993 W454A, W454B Inbred, white rot resistance, intermediate tolerance to onion maggot, susceptible to pink root and fusarium Derived from W404 and PI2646540
1993 W455A, W455B Inbred, foliage blue-green, white rot resistant, intermediate tolerance to onion maggot, susceptible to pink root and fusarium Derived from W404 and PI2646540
1993 W456A, W456B Inbred, white rot resistant, tolerance to onion maggot, susceptible to pink root and fusarium Derived from W404 and PI2646540
1993 W457A, W457B Inbred, white rot resistant, intermediate maggot tolerance, susceptible to pink root, intermediate tolerance to fusarium Derived from W404 and PI2646540
1993 W458A, W458B Inbred, white rot resistant, susceptible to pink root, intermediate tolerance to fusarium Derived from PI2646540 and W404
1993 W459A, W459B Inbred, white rot resistant, tolerance to onion maggot, susceptible to pink root, intermediate tolerance to fusarium Derived from PI2646540 and W404
1993 W460A, W460B Inbred, white rot resistant, susceptible to pink root and very resistant to fusarium Derived from W404 and PI2646540
1993 W461A, W461B Inbred, white rot resistant, good tolerance to onion maggot, moderate resistance to pink root, intermediate tolerance to fusarium Derived from PI 264650 and W202

z Descriptions were compiled from field notebooks, release notices sent to Agricultural Experiment Stations, and opinions of W.H. Gabelman. When color is mentioned, it refers to the dry outer scales. Pink root is caused by the fungus

Pyrenochaeta terrestris (Hans.). White rot is caused by the fungus Sclerotium cepivorum Berk. Tipburn is a physiological disorder caused by ozone-induced injury. The onion maggot is Delia antiqua Meig.

y Genotype of `A' line for cytoplasm and nuclear-restorer loci is Smsms

x Genotype of `B' line for cytoplasm and nuclear-restorer loci is Nmsms

w Genotype of `C' line for cytoplasm and nuclear-restorer loci is NMSMS