Descriptor: Stem Rust Seedling DBD (STEMRUSTSE_DBD)



 
Definition:
Stem rust seedling reaction DBD
Crop:
OAT
Category:
Disease descriptors
Status:
Crop Germplasm Committee approved
Data Type:
Alpha/numeric descriptor
Maximum Length:
2
Comment:
[+, ++, -, =, C, N] 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 DBD (STEMRUSTSE_DBD)

CodeDefinitionNumber of Accessions
;MOSTLY IMMUNE, NO UREDINIA, BUT NUMEROUS HYPERSENSITIVE FLECKS PRESENT.32
0IMMUNE, NO UREDINIA OR OTHER INDICATIONS OF INFECTION.7
0;NEARLY IMMUNE, NO UREDINIA, BUT A FEW HYPERSENSITIVE FLECKS PRESENT.20
1VERY RESISTANT, UREDINIA MINUTE, SURROUNDED BY DISTINCT NECROTIC AREAS.10
2MODERATELY RESISTANT, UREDINIA SMALL TO MEDIUM, USUALLY GREEN ISLANDS SURROUNDED BY A DECIDEDLY CHLOROTIC/NECROTIC BORDER.10
3MODERATELY SUSCEPTIBLE, UREDINIA MEDIUM SIZE COALESCENCE INFREQUENT, NO NECROSIS, BUT CHLOROTIC AREAS MAY BE PRESENT.111
4VERY SUSCEPTIBLE, UREDINIA LARGE AND OFTEN COALESCING , NO NECROSIS BUT CHLOROSIS MAY BE PRESENT.36