Abstract

Succinate dehydrogenase inhibitor (SDHI) fungicides are important tools to control preharvest and postharvest brown rot of stone fruits. In this study we determined the mycelial growth rate of Monilinia fructicola isolates on various media and picked the three that allowed the fastest growth to assess the sensitivity of mycelium to SDHI fungicides boscalid, fluopyram, and penthiopyrad. Minimal medium (MM) supported mycelial growth the best and yielded lowest EC50 values for three SDHI fungicides. EC50 values corresponded with disease incidence data obtained from detached fruit assays. Penthiopyrad had significantly greater intrinsic activity in vitro compared to fluopyram at the α = 0.05 level and compared to boscalid at the α = 0.1 level. However, detached fruit assays revealed that this ‘advantage’ did not carry over in vivo. In conclusion, MM appears to be the best medium currently available to assess the sensitivity of M. fructicola mycelium in vitro.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.