Daucus carota var. sativus Japan

Strandberg, J.O. 1992. Evaluations of plant introductions of Daucus species for tolerance of Alternaria Dauci and some other horticultural characteristics. University of Florida Central Florida Research and Education Center. Sanford, Florida. Research Report SAN 93-03

Hancock, Wisconsin evaluations for Alternaria resistance in 2015

The objectives of this study were to evaluate the response of diverse carrot germplasm to heat stress, identify heat-tolerant germplasm that may be used by plant breeders, and define the appropriate temperature for assessing heat tolerance in germinating carrot seed.

This study is the first field-based, multi-year experiment to evaluate shoot-growth trait variation over a 100-day growing season in a carrot diversity panel (N=695) that includes genetically diverse carrot accessions from the United States Department of Agriculture National Plant Germplasm System. This study provides the first broad-sense heritability estimates for early-season seedling vigor and early-season canopy coverage on a diverse collection. We also develop a method for characterizing flowering to identify accessions that are predominantly biennial, which could be incorporated into biennial breeding programs without substantially increasing the risk of annual growth habits.