Legend of resistances

Basil

Fob Fusarium oxysporum f. sp. basilici – Fusarium wilt of basil; DM0 – Peronospora belbahrii – Downy mildew of basil race 0; DM1 – Peronospora belbahrii – Downy mildew of basil race 1;

Cabbage

Foc Fusariumoxysporum f. sp. conglutinans;
Xcc Xanthomonas campestris pv. campestris;

Watermelon

Fon Fusarium oxysporum f. sp. niveum – Fusarium wilt of watermelon;
Co Colletotrichum orbiculare – Anthracnose;

Melon

Fom Fusarium oxysporum f. sp.melonis – Fusarium wilt of melon;
Px Podosphaera xanthii (ex Sphaerotheca fuliginea) – Powdery mildew;
MNSV Melon Necrotic Spot Virus;

Pepper

PVY – Potato Y virus
TM – Tobamovirus (ToMV – Tomato mosaic virus, TMV – Tobacco mosaic virus, PMMoV – Pepper mild mottle virus)
TSWV – Tomato spotted wilt virus
Phy – pedal gangrene of pepper

Tomato

Va Verticillium alboatrum – Verticillium wilt;
Vd Verticillium dahliae – Verticillium wilt;
Fol Fusarium oxysporum f. sp. lycopersici;
For Fusarium oxysporum f. sp. radicis lycopersici – Fusarium radicis;
FF Fulvia fulva – Leaf mould of tomato; Sl Stemphylium lycopersici – Leaf blight of tomato;
Pst Pseudomonas syringae pv. tomato – Bacterial speck of tomato;
Ma, Mi, Mj* Meloidogyne arenaria, Meloidogyne incognita, Meloidogyne javanica – nematodes;
ToMV Tomato mosaic virus;
TSWV Tomato spotted wilt virus;
TYLCV Tomato yellow leaf curl virus;
ToTV Tomato torrado virus;

Rootstocks

Bw Ralstonia solanacearum – Bacterial wilt;
Fol Fusarium oxysporum f. sp. lycopersici – Fusarium wilt of tomato;
Fon Fusarium oxysporum f. sp. niveum – Fusarium wilt of watermelon;
Fom Fusarium oxysporum f.sp. melongenae – Fusarium wilt of eggplant;
For Fusarium oxysporum f. sp. radicis lycopersici – Fusarium radicis MNSV – Melon Necrotic Spot Virus;
N* Nematods;
Phy – Phytophtora capsici Leonian;
Pl Pyrenochaeta lycopersici – Corky root rot;
Vd Verticillium dahliae, Verticillium albo-atrum – Verticillium wilt;

* Soil temperature above 27 ° C and other stress factors can be the reason of a decrease of the resistance level until it is canceled. In general, and even more in soils where the previous crop has suffered attacks from this pathogen, it is necessary to carry out disinfestation interventions before transplant and during cultivation.

DEFINITIONS AND LIMITATIONS

IR and HR definition

Susceptibility: When a vegetable variety is not able to limit growth and/or development of a specific harmful organism.
Resistance: When a vegetable variety is able to limit growth and/or development of a specific harmful organism and/or the damage it brings, in comparison with susceptibles varieties under the same environmental conditions and pressure of the harmful organism. Any way, resistant varieties can show some symptoms of disease or damage when subject to strong presence of the harmful organism.

ISF defines two levels of resistance:
High resistance (HR**): the variety is able to limit growth and development of a specific harmful organism strongly under normal conditions of infectious pressure when compared with susceptible varieties. However these varieties may show some symptoms or damage under high pressure levels of the harmful organism.
Intermediate resistance (IR**): the variety is able to limit growth and development of a specific organism, which may show a wider range of symptoms and damages in comparison to highly resistant varieties. Intermediate resistance varieties will show less evident symptoms and damages than susceptible varieties if grown under similar environment conditions and/or they are exposed to the same pressure by the harmful organism. It is important to notice that if a variety is declared resistant, this resistance is limited to a specific biotype, pathotype, breed or strain of the harmful organism. If resistance is declared without specifying any biotype, pathotype, race or strain, it means that no recognized classification of the harmful organism exists as a biotype, pathotype, race or strain. Any new biotypes, pathotypes, races, strains that might occur, are not covered by the original declared resistance.
Immunity: when a plant is not object of the attack or infection caused by a specific parasite harmful organism.

USAGE RESTRICTION

The information contained in this publication is not intended to be exhaustive nor should it be considered as advice, guidance or recommendations. It simply represents the average results achieved during tests carried out by Fenix S.r.l. and it is not applicable or adaptable to all cultural and pedo-climatic conditions. The terms “high resistance” (HR) and “intermediate resistance” (IR) do not imply plant immunity but they refer to the current ISF terminology. No warranties are made regarding yield, performance, merchantability, fitness for a particular purpose or otherwise. Finally, pics used have a purely indicative value Copyright The information contained in this catalog is the exclusive property of Fenix S.r.l. The total or partial reproduction of the contents and images, subject to the authorization of Fenix S.r.l. constitutes a crime of copyright infringement.