Macrophomina phaseolina (Tassi) Goid. is found on all five crop-growing continents. In hot
and dry seasons, this fungus is capable of causing considerable damage. In this study,
mycelial compatibility of M. phaseolina isolates was investigated. In total the 30 samples
collected were tested to examine their compatibility. The sunflower samples examined were
collected in 2019 and 2020 in different regions of Hungary (29 isolates) and Slovakia (1
isolate). A total of 465 pairing tests were made with 30 isolates. The results of our …

Macrophomina phaseolina is a globally widespread fungal pathogen. The fungus has a very
wide range of hosts. Under optimal conditions, M. phaseolina can cause serious damage
tothe host plants. In this study, the mycelial compatibility of different M. phaseolina isolates
was investigated. From 2019 to 2021, 12 sunflower samples were collected from different
regions of the Carpathian Basin, 9 samples from Hungary, 1 sample from Austria, and 2
samples from Slovakia. The genetic variability of the pathogen is a critical problem in plant …