Abstract

QUINTANA-OBREGON, Eber Addi et al. Isolation and identification of fungi from leaves infected with false mildew on safflower crops in the Yaqui Valley, Mexico. Rev. Mex. Mic [online]. 2013, vol.37, pp.19-27. ISSN 0187-3180.

False mildew is a serious disease of safflower crops in the Yaqui Valley, Mexico, and is caused by infection with a fungus belonging to the genus Ramularia. In the present study, a fungus isolated from leaf lesions was grown under different growth conditions in order to study its mycelial growth and spore production, determining that the solid medium of Septoria tritici at 18 °C of incubation and photoperiod of 12 h light-dark, were the most suitable conditions for the fungal development. The isolated was morphologically identified as Ramularia cercosporelloides, but genomically as Cercosporella acroptili, therefore cannot be concluded which species causes this disease. Also, in the periphery of false mildew were found the presence of Alternaria tenuissima and Cladosporium cladoporioides.

Keywords : Ramularia cercosporelloides; Carthamus tinctorius; Cercosporella acroptili; isolated fungi; Sonora.