4Simon P W. Genetic improvement of vegetable carotene content[M]//Bills D D,Kung S.Biotechnology and Nutrition. Boston: Butterworth-Heinemann, 1992: 291-300.
5Simon P W. Plant pigments for color and nutrition[J]. Hortic Sci, 1997, 32:12-13.
6Rubatzky V E, et al. Carrots and related vegetable umbelliferate[M]. New York: CABI Publishing, 1999.
7Zenkteler M. Microsporogenesis and tapetal development in normal and male-sterile carrots(Daucus carota)[J]. Amer J Bot., 1962,49(4): 341-348.
8Struckmeyer E, Simon P. Anatomy of fertile and male-sterile carrot flowers from different genetic sources[J]. J Amer Soc Hort Sci., 1986(1): 965-968.
9Thompson D J. Studies on the inheritance of male sterility in carrot (Daucus carota L. var. sativa)[J]. Proc Amer Soc Hort Sci., 1961,78: 332-338.
10Eisa H M, et al. Morphological and anatomical aspects of petaloidy in the carrot(Daucus carom L.)[J]. J Amer Soc Hort Sci., 1969,94: 545-548.