Reference

Disease Resistance Glossary

Every resistance code used across the Vira Agro catalogue, with the pathogen it refers to. Codes follow the abbreviations published by the International Seed Federation.

HR

High Resistance

The variety highly restricts the growth and development of the pathogen under normal pest or pathogen pressure. Symptoms may still appear under very heavy pressure.

IR

Intermediate Resistance

The variety restricts the pathogen, but may show more symptoms than a variety with high resistance. Losses are reduced rather than prevented.

Resistance is not immunity

Resistance describes how a plant behaves under defined test conditions. Local pressure, strain or race differences and growing practice all still apply — rotation, hygiene and monitoring remain necessary.

Carrot

Carrot codes

Cavity spot / root dieback

Pythium spp.

Definition pending confirmation

Cucumber

Cucumber codes

Cucumber vein yellowing virus

Cucumber vein yellowing virus

Eggplant

Eggplant codes

Tomato spotted wilt virus

Tomato spotted wilt virus

Fusarium wilt

Fusarium oxysporum f. sp. lycopersici

Melon

Melon codes

Fusarium wilt of melon

Fusarium oxysporum f. sp. melonis

Pepper

Pepper codes

Tomato spotted wilt virus

Tomato spotted wilt virus

Squash

Squash codes

Zucchini yellow mosaic virus

Zucchini yellow mosaic virus

Watermelon mosaic virus

Watermelon mosaic virus

Powdery mildew

Podosphaera / Golovinomyces spp.

Tomato

Tomato codes

Tomato brown rugose fruit virus

Tomato brown rugose fruit virus

Tomato yellow leaf curl virus

Tomato yellow leaf curl virus

Tomato spotted wilt virus

Tomato spotted wilt virus

Fusarium wilt

Fusarium oxysporum f. sp. lycopersici

Fusarium crown and root rot

Fusarium oxysporum f. sp. radicis-lycopersici

Watermelon

Watermelon codes

Zucchini yellow mosaic virus

Zucchini yellow mosaic virus

Watermelon mosaic virus

Watermelon mosaic virus

Fusarium wilt of watermelon

Fusarium oxysporum f. sp. niveum

Not sure which resistances your season needs?

Tell us the crop, the region and what you have lost a crop to before. We will point you to the varieties whose resistance package actually answers it.