Morphological, cultural and pathogenic characteristics of Macrophomina phaseolina isolates from sugar beet
2012
Stojšin, V. (Faculty of Agriculture, Novi Sad (Serbia). Department for Environmental and Plant Protection) | Budakov, D. (Faculty of Agriculture, Novi Sad (Serbia). Department for Environmental and Plant Protection) | Bagi, F. (Faculty of Agriculture, Novi Sad (Serbia). Department for Environmental and Plant Protection) | Đuragin, N. (Faculty of Agriculture, Novi Sad (Serbia). Department for Environmental and Plant Protection) | R., Marinkov (Faculty of Agriculture, Novi Sad (Serbia). Department for Environmental and Plant Protection)
Charcoal root rot, caused by Macrophomina phaseolina is potentially the most destructive sugar beet pathogen in Serbia, especially during extremely warm and dry season. Sixteen isolates from sugar beet and three from sunflower, soybean and maize were chosen for testing morphological and cultural characteristics, as well as their pathogenicity on young sugar beet plants. All isolates were chlorate sensitive, even though significant differences existed between isolates in colony diameter on Minimal Media (MIN). All isolates were pathogenic to sugar beet plants causing symptoms of necrosis on hypocotyls and roots. In regard to their pathogenicity isolates were grouped into low pathogenic (26.3%), moderately and highly pathogenic (36.8% each).
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