A new carrot F1 hybrid cultivar,‘Ground King’ was developed from the cross between a male sterile line ‘80027A’as a female parent and ‘804229’ as a male parent in 2003. Regional yield trial was carried out at five different provinces andthree cultivation types from 2006 to 2008. The plant growth habit is erect and the root type is cone-shaped like ‘Yangmeon’cultivar. Maturity belonged to a late-maturity type. It grows up to 59.3 cm in height and the average leaf number of a singleplant is 9.4. Root color is all scarlet for skin, flesh and core. Regarding to disease resistance, it showed medium resistance toleaf blight and powdery mildew. The average root weight of ‘Ground King’ is very high as 171 g in compared with that ofa commercial ‘Yangmyeon’ as 166 g. This variety will be optimal for spring and summer cultivation since the bolting ratiocombe as low as 3.9%.
