Daucus carota subsp. commutatus Portugal

Hancock, Wisconsin evaluations for Alternaria resistance in 2013

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

Traits evaluated: ANTHER COLOR (ANTHERCOL); BRACT LENGTH (BRACTLEN); NUMBER OF BRACT POINTS (BRACTPNTS); BRACT WIDTH (BRACTWID); BRACT LOBE PAIRS (BRCTLOBPAR); FLOWER RAY NUMBER (FLWRAYNUM); FOLIAGE COLOR (FOLIAGECOL); INVOLUCRAL BRACT POSITION (INVOLBRACT); LEAF PUBESCENCE (LEAFPUBE); LEAF TYPE (LEAFTYPE); MATURE LEAF LENGTH (MATLEAFLEN); MATURE LEAF WIDTH (MATLEAFWID); MATURE PETIOLE LENGTH (MATPETLENG); MATURE PETIOLE THICKNESS (MATPETTHK); PIGMENTED CENTRAL UMBEL COLOR (PCUCOLOR); PIGMENTED CENTRAL UMBEL (PCUPRESENT); PEDUNCLE PUBESCENCE (PEDUNCPUB); PETAL COLOR (PETALCOLOR); PETIOLE HAIRINESS (PETIOLHAIR); PETIOLE SHAPE (PETIOLSHP); PETAL LENGTH CENTRAL (PETLENCEN); PETAL LENGTH PERIPHERAL (PETLENPER); PLANT HEIGHT (PLANTHEIGH); PRIMARY UMBEL FLOWER HEIGHT (PRIMFLWHT); PRIMARY UMBEL DIAMETER (PRIMUMDIAM); SECONDARY UMBEL DIAMETER (SECUMBDIAM); SEED LENGTH (SEEDLENGTH); SEED WIDTH (SEEDWIDTH); SPINE CURVATURE (SPINECURV); HAIRS AT BASE OF PRIMARY SPINE (SPINEHAIRS); WIDTH SEC RIB SPINE CONFLUENCE (SPNCNFLWDT); SPINE CONFLUENCY (SPNCONFLU); LENGTH OF SECONDARY RIB SPINES (SPNSECLENG); NO. OF SPINES ON SECONDARY RIB (SPNSECRBNO); BARBS AT TIPS OF SPINES (SPNTIPBARB); STAMEN LENGTH (STAMENLENG); STEM DIAMETER (STEMDIAM); STIPULE WIDTH (STIPULWIDT); UMBEL SHAPE - FULL BLOOM (UMBELSHPFB); UMBEL SHAPE - MATURE SEED (UMBELSHPMT)

Evaluation location: Iowa, United States. Method: Daucus descriptor data recorded from observation planting Field W-1 at the NCRPIS farm (42 degrees 3 minutes N latitude 93 degrees 30 minutes W longitude).