The pellet morphology of R. oryzae 1526 was further analyzed using SEM. Many conventional
measurement tools (microphotography, ruler-based scaling, and others) are applied for
the measurement of fungal pellet diameter. However, accuracy and qualitative aspects are not
within the scope of these techniques. A high-quality imaging system such as SEM can reveal
both quantitative (diameter of pellet and hyphae) and qualitative (pellet shape, surface
topology, and hyphal texture) minute details of fungal pellets. For these reasons, optimized
pellet samples were subjected to SEM analysis.