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Inbred Carrot Line W281C
UW-Madison researchers have developed a new line of carrots. Inbred carrot line W281C is a long Nantes type with excellent color and canned product quality. It was derived from the cross [(W267 x W259) x (W259 x W267)]. W267 is an unreleased inbred line, while W259 is an inbred line previously released by the University of Wisconsin Carrot Breeding Program that possesses exceptional color and flavor. Based on pedigree, W281C is very similar to W259, but has normal cytoplasm and carries alleles for fertility at the nuclear restorer locus. In addition, the foliage of W281C is slightly superior to Lucky B, a processing carrot hybrid produced from inbred lines previously released by the
Carrot Breeding Program.
Irwin Goldman, Dwight "Nick" Breitbach
P01014US
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Inbred Carrot Lines W279A and W279B
UW-Madison researchers have developed a new line of carrots. W279A (sterile) and W279B (maintainer) represent long Chantenay type, inbred carrot lines with medium green foliage. W279 was derived from a cross between W267, an unreleased, inbred line, and W233, an inbred line previously released by the University of Wisconsin Carrot Breeding Program.
Irwin Goldman, Dwight "Nick" Breitbach
P00223US
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Inbred Carrot Lines W280A and W280B
UW-Madison researchers have developed a new line of carrots. Inbred carrot line W280 is a long Danvers type with a tapered root and light green foliage. W280 was derived from a cross between the unreleased inbred lines, W261 and W262. W280A is a green petaloid sterile and W280B is the maintainer genotype.
Irwin Goldman, Dwight "Nick" Breitbach
P01013US
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Inbred Carrot Lines WAY274A and WAY274B
UW-Madison researchers have developed a new line of carrots. WAY274A (green petaloid sterile) and WAY274B (maintainer) are inbred, carrot lines possessing superior resistance to the plant disease aster yellows, which is caused by a mycoplasma-like organism and spread by the aster leafhopper, Macrosteles fascifrons stal. During three years of field trials, less than 8% of WAY274 plants per plot were infected with aster yellows, compared with an average of 24% among six commercial cultivars. WAY274 is a long Nantes type with medium green foliage. The line was derived from a cross between Scarlet Nantes and the unreleased population Aster Yellows Synthetic 1983, followed by a cross with the unreleased, inbred line W262.
Irwin Goldman, Dwight "Nick" Breitbach
P01015US
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Inbred Carrot Lines May Resist Root-Knot Pest
UW–Madison researchers have developed inbred carrot lines that exhibit some resistance to Northern root-knot nematode. The two lines are [W261 x (Rotin x W259)] and [W77 x (Rotin x W259)]. The lines were identified via greenhouse screening tests in the presence of nematode infection. Genetic crosses indicated that resistance is conditioned by two different homozygous recessive genes.
Irwin Goldman
P120304US01
