Studies on production and effect of Cercospora toxin and culture filtrates on urdbean and mungbean seed germination
DOI:
https://doi.org/10.53550/jfl.v19i1.2287Keywords:
Cercospora canescens, Cercospora, Mungbean, Seed germination, Urdbean, Vigna mungo, V. radiataAbstract
Cercospora canescens, a leaf spotting pathogen of urdbean and mungbean was isolated from urdbean on carrot decoction agar and V8 media. The Cercospora toxin was isolated from the culture medium through a standard procedure. The effect of pathogen toxin including culture filtrates on seed germination, and root and shoot length of both the pulse crops was studied. Both culture filtrates and toxin were found inhibitory to seed germination and seedling growth.
References
Daub, M.E. 1986. Tissue culture and selection of resistance to pathogens. Annual Review of Phytopathology 24: 159-186.
Eupo, E.J.A. and Esuruoso, O.E. 1978. Growth and sporulation of Cercospora cruenta and C. canescens in culture. Canadian Journal of Botany 56(3): 229-233.
Kaushal, R.P. 1985. Genetics of resistance to some major diseases of urdbean (Vigna mungo (L.) Hepper) occurring in Himachal Pradesh. Ph.D. thesis, H.P. Krishi Vishvavidyalaya, Palampur.
Kilpatrick, R.A. and Johnson, H.W. 1956. Sporulation of Cercospora spp. on carrot leaf decoction agar. Phytopatholgoy 46: 180-181.
Kwoh, S.H. and Oh, J.H. 1981. Sporulation of Cercospora canescens Ell & Mart. in culture. Korean Journal of Plant Protection 20: 221- 224.
Mcw, I.C., Wang, T.C. and Mew, T.W. 1975. Inoculum production and evaluation of mungbean varieties for resistance to Cercospora canescens. Plant Disease Reporter 59: 397-401.




