Resistances keys
Out of courtesy to its website visitors, Vilmorin-Mikado offers a list of pest organism Codes. The purpose of this section is to clarify the different codes by crop. It is intended for professional users. Vilmorin shall not be held liable for any reason regarding the information provided in this section.
| Abbreviation | Pathogen | Disease |
|---|---|---|
| Carrot | ||
| Ad | Alternaria dauci | Late leaf blight |
| Ay | Aster yellow | Aster yellow |
| Cc | Cercospora carotae | Early leaf blight, Cercospora leaf spot |
| Ps | Pythium sulcatum | Cavity spot |
| Pv | Pythium Violae | Cavity spot |
| Eh | Erysiphe heraclei | Powdery mildew |
| Xhc | Xanthomonas ortorum pv. Carotae (ex Xanthomonas campestris pv. Carotae) | Leaf spots, Bacterial blight |
| Onion | ||
| Pt | Pyrenochaeta terrestris | Pink root |
| Cucurbit | ||
| Co | Colletotrichum orbiculare (ex Colletotrichum lagenarium) | Anthracnose |
| Fom | Fusarium oxysporum f. sp. melonis | Fusarium wilt |
| Fon | Fusarium oxysporum f. sp. niveum | Fusarium wilt |
| Gc | Golovinomyces cichoracearum (ex Erysiphe cichoracearum | Powdery mildew |
| Px | Podosphaera Xanthii (ex Sphaerotheca fuliginea) | Powdery mildew |
| Vd | Verticillium dahliae | Verticillium wilt |
| CMV | Cucumber Mosaic Virus | Cucumber mosaic |
| WMV | Watermelon Mosaic Virus | Watermelon mosaic |
| ZYMV | Zucchini Yellow Mosaic Virus | Zucchini yellows |
| Lettuce | ||
| Bl | Bremia lactucae | Downy mildew |
| Fol | Fusarium oxysporum f. sp lactucae | Fusarium wilt |
| Nr | Fusariosi della lattuga | Lettuce leaf aphid |
| Solanaceae | ||
| Fol | Fusarium oxysporum f. sp. lycopersici | Fusarium wilt |
| For | Fusarium oxysporum f. sp. radicis lycopersici | Fusarium crown and root rot |
| Ff | Fulvia fulva | |
| M | Meloidogyne arenaria, M. incognita, M. javanica | Root-knot |
| Ma | Meloidogyne arenaria | Root-knot |
| Mi | Meloidogyne incognita | Root-knot |
| Mj | Meloidogyne javanica | Root-knot |
| Pc | Phytophtora capsici | Phytophtora blight, Buckeye fruit and root rot |
| Pl | Pyrenochaeta lycopersici | Corky root rot |
| PMMoV | Pepper mild mottle virus | Pepper mottle |
| Pst | Pseudomonas syringae pv. tomato | Bacterial speck |
| PVY | Potato Y virus | Potato Virus Y |
| S | Stemphylium floridanum, S. solani, S. botryosum f. sp. lycopersici | Leaf spot disease |
| Sbl | S. botryosum f. sp. lycopersici | Leaf spot disease |
| Sl | Stemphylium lycopersici | Leaf spot disease |
| Ss | Stemphylium solani | Leaf spot disease |
| Tm (TMV) | Tobacco Mosaic Virus | Tomato mosaic / Tobacco mosaic / Pepper mild mottle |
| ToMV | Tomato Mosaic Virus | Tomato mosaic |
| TSWV | Tomato Spotted Wilt Virus | Tomato spotted wilt |
| TYLCV | Tomato Yellow Leaf Curl Virus | Tomato yellow leaf curl |
| V | Verticillium dahliae, Verticillium albo-atrum | Verticillium wilt |
| Va | Verticillium albo-atrum | Verticillium wilt |
| Vd | Verticillium dahliae | Verticillium wilt |
| Radish | ||
| Ac | Albugo candida | White rust, White blister |
| For | Fusarium oxysporum f. sp. raphani | Yellows/ damping off |
| Pp | Peronospora parasitica | Downy mildew |
Disease resistance
Resistance is the ability of a variety to restrict the growth and development of a specified pest or pathogen and/or the damage it causes when compared to susceptible plant varieties under similar environmental conditions and pest or pathogen pressure. Resistant varieties may exhibit some disease symptoms or damage under heavy pest or pathogen pressure.
Two levels of resistance are defined:
- High/standard resistance (HR): plant varieties that highly restrict the growth and development of the specified pest or pathogen under normal pest or pathogen pressure when compared to susceptible varieties. These plant varieties may, however, exhibit some symptoms or damage under heavy pest or pathogen pressure.
- Moderate/intermediate resistance (IR): plant varieties that restrict the growth and development of the specified pest or pathogen, but may exhibit a greater range of symptoms or damage compared to HR varieties. IR varieties will still show less severe symptoms or damage than susceptible varieties when grown under similar environmental conditions and/or pest or pathogen pressure.