2Coelho P S,Monteiro A A. 2003. Inheritance of downy mildew resistance in mature broccoli plants. Euphytica, 131:65-69.
3Moss N A,Crute I R,Lucas J A,Gordon P L. 1988. Requirements for analysis of host-species specificity in Peronospora parasitica(downy mildew). Cruciferae Newsl, 13 : 114-116.
4Natti J J,Dickson M H,Atkin J D. 1967. Resistance of Brassica oleracea varieties to downy mildew. Phytopathology, 57:144-147.
5Smith P A,Price T V. 1997. Preliminary study of seed transmission of downy mildew in some vegetable brassica cultivars in Australia. Australasian Plant Pathology, 26 : 54-59.
6Vishunavat K, Kohe S J. 1993. Brassica seed infection with Peronospora parasitica (pers. ex Fr. )Fr. and its transmission through seed. Indian J. Mycol. Plant Pathol, 23 : 247-249.
7Yu S C,Zhang F L,Yu R B,Zou Y M,Qi J N,Zhao X Y,Yu Y J,Zhang D S,Li L. 2009. Genetic mapping and localization of a major QTL for seedling resistance to downy mildew in Chinese cabbage (Brassica rapa ssp. pekinensis ). Molecular Breeding, 23 : 573- 590.
