Introducing: Debunking the myhts on HREZ

Unpacking misconceptions about HREZ

In this series, our Senior Researcher Phytopathology Manus Thoen takes on the myths about HREZ that spread just as fast as the virus itself. Together with experts from breeding, diagnostics, pathology, and molecular biology, he unpacks misconceptions about HREZ, our High Resistance to ToBRFV.

This way, we will they provide a transparent and science-based view of how resistance works, how durability is protected, and how growers can make informed decisions in a landscape where ToBRFV remains a real challenge.

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What you can expect

Across five episodes, we explore the most common HREZ myths:

• Myth #1 “Resistance always comes at a cost.” Is resistance really a tradeoff? Manus breaks down what the science shows.
• Myth #2 “Hot days permanently break HREZ resistance.” Do warm days have a lasting impact on resistance — or is this a myth?
• Myth #3“More genes are better than one gene.” Is more always better, or is the truth more nuanced?
• Myth #4“HREZ will be easily broken by ToBRFV mutant strains.” How vulnerable is HREZ to mutations? We examine the evidence.
• Myth #5 “Hygiene doesn’t matter when you grow HREZ.” Why good hygiene practices in cultivation remain essential.