Sunflower genotypes tolerance to charcoal rot (Macrophomina phaseolina (Tassi) Goid.) under the field conditions

Sunflower (Helianthus annuus L.) is one of the most important crops grown in world, but it can be attacked by more than 30 different pathogens. The areal Macrophomina phaseolina (Tassi) Goid., sunflower pathogens nowadays often found temperate regions, has been spreading over last few years due to climate change. effective eco-friendly method for controlling charcoal rot caused M. growing resistant cultivars. Due that, 24 commercially available hybrids and 70 inbred lines were tested tolerance a two-year trial. Under field conditions, two inoculation methods used - Unwounded Stem Base Inoculation (USBI) Toothpick (TP) method. This study identified five highly tolerant 12 that breeding programs improvement future genotypes. genotype screening tests indicated both should applied together provide reliable results, stem lesion length trait disease severity assessments.