Descriptor: Stem Rust Seedling TTTTF (STEMRUSTSE_TTTTF)



 
Definition:
Stem rust seedling reaction TTTTF
Crop:
TRITICALE
Category:
Disease descriptors
Status:
Crop Germplasm Committee approved
Data Type:
Alpha/numeric descriptor
Maximum Length:
2
Comment:
[+, ++,-,=] indicate variation within an infection type (see data in 'original value' column)
Responsible Site:
National Small Grains Collection (NSGC)


Studies or environments

Distribution of Values for Stem Rust Seedling TTTTF (STEMRUSTSE_TTTTF)

CodeDefinitionNumber of Accessions
;MOSTLY IMMUNE, NO UREDINIA, BUT NUMEROUS HYPERSENSITIVE FLECKS PRESENT.231
0IMMUNE, NO UREDINIA OR OTHER INDICATIONS OF INFECTION.1
0;NEARLY IMMUNE, NO UREDINIA BUT A FEW HYPERSENSITIVE FLECKS PRESENT.60
1VERY RESISTANT, UREDINIA MINUTE, SURROUNDED BY DISTINCT NECROTIC AREAS.20
2MODERATELY RESISTANT, UREDINIA SMALL TO MEDIUM, USUALLY GREEN ISLANDS SURROUNDED BY A DECIDEDLY CHLOROTIC/NECROTIC BORDER.155
3MODERATELY SUSCEPTIBLE, UREDINIA MEDIUM SIZE COALESCENCE INFREQUENT, NO NECROSIS, BUT CHLOROTIC AREAS MAY BE PRESENT.86
4VERY SUSCEPTIBLE, UREDINIA LARGE AND OFTEN COALESCING, NO NECROSIS BUT CHLOROSIS MAY BE PRESENT.10
CEXCESSIVE CHLOROSIS.1