Description:
'Liberty' was developed using a recombinant recurrent mass selection breeding technique. This cultivar originated as a seedling of the maternal parent 'White Regal' from an open pollinated polycross breeding block comprised of four randomized replications of 32 parental clones in 1992 at the USDA ARS, U. S. Vegetable Laboratory (USVL), Charleston, SC. Parental clones in the block were selected for high levels of multiple pest resistance combined with many good horticultural traits. White Regal was discovered as a stable somatic mutant from the cultivar 'Regal' (W-152) in 1990. The maternal parent of 'Regal', and thus White Regal, was W-99, whose maternal parent was W-48. The paternal parent of Liberty is one of the other 31 genotypes in the polycross nursery. Liberty was designated first as 93-223 when it was tested as a first year seedling in 1993. In 1997, this genotype was re designated W-341 for further field testing, and in 2003 it was released by USDA ARS and Clemson University as Liberty