Legend of resistances

Basil

Fob Fusarium oxysporum f. sp. basilici – Fusarium wilt of basil;
Pb Peronospora belbahrii – Downy mildew of basil;

Cabbage

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

Melon

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

Watermelon

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

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

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 cause a reduction in resistance until it is canceled. In general and even more so 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

Resistance: it is the ability of a plant variety to limit growth and development of a specific harmful organism and the damage it causes in comparison with susceptible varieties at the same environmental conditions, submitted to the same level of exerted by the harmful organism. Anyway, resistant varieties may exhibit some disease symptoms or damage in the presence of strong pressure levels exerted by the harmful organism.

We define here two levels of resistance:

High resistance (HR**): : the variety is able to strongly limit growth and development of a specific harmful organism in normal conditions of infectious pressure when compared with susceptible varieties. However these varieties may show some symptoms or damage under high pressure levels exerted by 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 submitted to the same pressure by the harmful organism. It is important to notice that if a variety is declared as 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 subject to being attacked or infected by a specific parasite harmful organism.

Tolerance: the feature of a plant variety to resist abiotic stress, without serious complications regarding development, aspect and yield.

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.