Abstract: Stably inherited leaf yellowish mutant was found in the high-generated inbred line of carrot cultivar (Daucus carota‘Kuroda’). Genetic analysis indicated that the yellowish mutant was nucleolus inheritance and was controlled by one pair of recessive gene, and green colorwas comp lete dominant to yellow color. The leaf chlorophyll content of the yellowish mutant was only 29.3% - 50.1% of the normal line, and was not affected by the temperature and the illumination of the environment. The growth weight of the over-ground and under-ground of the mutant ( yelyel) was significantly lower than the weight of the normal line ( YELYEL ) , but when the allele is heterozygous ( YELyel) , there was no significant difference in growth weight, yield and nutrient quality between the mutant and the normal line.

Key words: Carrot, Daucus carota L., Yellow mutant, Inheritance