Disease Abbreviation Key

HR High Resistance: describes 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. Highly resistant varieties may, however, exhibit some symptoms or damage under heavy pest or pathogen pressure*
IR Intermediate Resistance: describes plant varieties that restrict the growth and development of the specified pest or pathogen, but may exhibit a greater range of symptoms or damaged compared to highly resistant varieties. Intermediately resistant varieties will still show less severe symptoms or damaged than susceptible plant varieties when grown under similar environmental conditions and/or pest or pathogen pressure.*
T Tolerance: the ability of a plant variety to endure abiotic stress without serious consequences for growth, appearance or yield.  A tolerant plant will usually show fewer symptoms than sensitive plant varieties when grown under similar conditions of abiotic stress.*

 

Immunity Plant varieties which are not subject to attack or infection by a specific pest/ pathogen are considered immune.**
Resistance (R) Plant varieties that restrict the growth and development of the specific pest or pathogen under normal pest or pathogen attack pressure when compared to susceptible varieties. These plant varieties can exhibit some symptoms or damage under heavy pest or pathogen pressure. Plant varieties with Resistant (R) are not immune to the pest/ pathogen.**
Intermediate Resistance (IR) Plant varieties that restrict the growth and development of the specified pest/pathogen, but may exhibit a greater range of symptoms or damage compared to resistant varieties. Intermediate resistant plant varieties will usually show less severe symptoms or damage than susceptible plant varieties when grown under similar environmental conditions. and/or pest/ pathogen pressure, but may have heavy damage under heavy pressure. Plant varieties with Intermediate Resistance (IR) are not immune to pest/ pathogen.**
Susceptible (S) The inability of a plant variety to restrict the growth and development of a specified pest/pathogen. Plant varieties that are susceptible will show damage when infected and are more likely to have heavy damage under moderate levels of pest/pathogen pressure.**

 

 

BEAN

BCMV Bean common mosaic caused by Bean common mosaic virus
BMV1 Bean Mosaic Virus (races noted)

BCMV 1 (US1)

Bean common mosaic caused by Bean common mosaic virus

CBMV

Common Bean Mosaic Virus

BCTV Curly Top caused by Beet curly top virus
CTV Curly Top Virus
BGYMV Bean golden yellow mosaic caused by Bean golden yellow mosaic virus
Cl Anthracnose caused by Collectotrichum lindemuthianum
Psp Halo blight caused by Pseudomonas savastanoi pv. phaseolicola
Pss Bacterial brown spot caused by Pseudomonas syringae pv. syringae
BBS Bacterial Brown Spot
Ua Rust caused by Uromyces appendiculatus

Xap

Common Blight caused by Xanthomonas axonopodis pv. phaseoli

NY15 NY15 Strain of BMV
NL8 NL* Strain of BMV
PM Powdery Mildew
DM Downy Mildew

CABBAGE

(T)

Tolerant

FY 1

Fusarium yellow race 1

Foc Fusarium yellows caused by Fusarium oxysporum f.sp.conglutinans

BR

Black Rot

TB

Tipburn

CANTALOUPE & MELONS

Fom

Fusarium wilt caused by the specified races of Fusarium oxysporum f.sp. melonis

Fus

Fusarium Wilt (races noted)

F Fusarium Wilt (races noted)

Sf

Powdery mildew caused by the specified races of Sphaerotheca fuliginea

PM

Powdery Mildew

Sf 1

Powdery mildew caused by Sphaerotheca fuliginea

S

Sulfur burn caused by the application of some sulfur-based pesticides

DM Downy Mildew

CORN

su

Sugary

se

Sugary Enhanced

sh2

Supersweet

Bm

Southern corn leaf blight caused by Bipolaris maydis (=Helminthosporium maydis)

SLB Southern Leaf Blight

Et

Northern corn leaf blight caused by Exserohilum turcicum (=Helminthosporium turcicum)

NCLB

Northern Corn Leaf Blight

NLB Northern Leaf Blight

MDMV

Maize dwarf mosaic caused by Maize dwarf mosaic virus

MDM

Maize Dwarf Mosaic

Ps (Rp1-d,e,g,i)

Common rust caused by Puccinia sorghi controlled by Rp1-d,e,g, and i genes

CR

Common Rust

Ps

Common rust caused by Puccinia sorghi

Pst

Stewart’s wilt caused by Pantoea stewartii (=Erwinia stewartii)

SW

Stewart’s Wilt

Um

Common smut caused by Ustilago maydis

Smut Smut

CUCUMBER

R

Resistant

(T)

Tolerant

CMV

Cucumber mosaic caused by Cucumber mosaic virus

Sf

Powdery mildew caused by Sphaerotheca fuliginea

PM

Powdery mildew

Co

Anthracnose caused by Colletotrichum orbiculare

AN

Anthracnose reaction to the races shown

Psl

Angular leaf spot caused by Pseudomonas syringae pv. lachrymans

ALS

Angular leaf spot

Ccu

Scab caused by Cladosporium cucumerinum

S

Scab

Scab Cucumber Scab

DM

Downy mildew

SqMV

Squash mosaic virus

WMV-2

Watermelon mosaic virus 2

PEAS

CW Common Wilt
DM Downy Mildew
F Fusarium Wilt
PM Powdery Mildew
BYMV  
PEMV Pea Enation Mosaic Virus
PLRV Pea Leaf Roll Virus
WPSV Western Pea Streak Virus

PEPPERS

R

Resistant

CMV

Cucumber mosaic caused by Cucumber mosaic virus

Lt

Powdery Mildew caused by Leveillula taurica

Pc

Phytophthora root caused by Phytophthora capsici

Phy

Phytophthora

PHYTP Phytophthora

PepMoV

Pepper mottle caused by Pepper mottle virus

PMMoV

Pepper mild mottle virus

PVY

Potato virus Y caused by Potato virus Y

PVY 0,1

Potato virus Y

S

Stip, a physiological disorder

TEV

Tobacco Etch caused by Tobacco etch virus

TMV

Mosaic caused by Tobacco mosaic virus

ToMV

Mosaic caused by Tomato mosaic virus

TSWV

Spotted wilt caused by Tomato spotted wilt virus

PepYMV

Pepper yellow mosaic caused by Pepper yellow mosaic virus

Xcv 1,2,3,5

Bacterial spot caused by Xanthomonas campestris pv. vesicatoria

BLS

Bacterial spot reaction to races shown

SQUASH

R

Resistant

CMV

Cucumber mosaic caused by Cucumber mosaic virus

Sf

Powdery mildew caused by Sphaerotheca fuliginea

PM Powdery Mildew

SLCV

Squash leaf curl caused by Squash leaf curl virus

WMV

Watermelon mosaic caused by Watermelon mosaic virus

PRSV

Papaya ringspot caused by Papaya ringspot virus

ZYMV

Zucchini Yellow Mosaic caused by Zucchini Yellow Mosaic virus

TOMATO

R

Resistant

Fol

Fusarium wilt caused by the specified races of Fusarium oxysporum f.sp. lycopersici

Fol US 1,2,3

Fusarium wilt caused by Fusarium oxysporum f.sp. lycopersici

F

Fusarium wilt resistant

F1

Fusarium wilt race 1

F2

Fusarium wilt race 2

For

Fusarium crown root rot caused by Fusarium oxysporum f.sp. radicis-lycopersici

M

Root knot caused by Meloidogyne arenaria, M. incognita & M. javanica

Mi, Ma, Mj

Root knot caused by Meloidogyne arenaria, M. incognita & M. javanica

N

Some root knot nemetodes (Mi gene)

Pst

Bacterial speck caused by Pseudomonas syringae pv. tomato

Sk

Bacterial speck (Pseudomonas syringae pv. tomato race O)

Sp

Bacterial speck race 0

Ss

Gray leaf spot caused by Stemphylium solani

S

Tolerant to Stemphylium gray leaf spot

TMV

Common mosaic caused by Tobacco mosaic virus

ToMV

Common mosaic caused by Tomato mosaic virus

T

Tomato mosaic virus resistant

TSWV

Tomato spotted wilt caused by Tomato spotted wilt virus

Sw

Tomato spotted wilt virus; T- (strainds O & 1)

V

Verticillium wilt caused by the specified race of Verticillium albo-atrum, V. Dahliae

V1

Verticillium wilt caused by Verticillium dahliae

Aal

Alternaria stem canker caused by Alternaria alternata f. sp. lycopersici

A

Alternaria stem canker

ASC Alternaria Stem Canker

Cf

Leaf mold (some Fulia fulva races)

C

Cladosporium

St Stemphyllim

WATERMELON

R

Resistant

(T)

Tolerant

Co

Anthracnose caused by Colletotrichum orbiculare

AN 1

Anthracnose race 1

Anth

Anthracnose

Fon

Fusarium wilt caused by Fusarium oxysporum f.sp. niveum

Fus

Fusarium Wilt

FW 1

Fusarium wilt race 1

 

* Terminology defined by Rogers-Syngenta®
** Terminology defined by Harris Moran Seed Company®