Descriptor: Stem Rust Seedling QSHS (STEMRUSTSE_QSHS)



 
Definition:
Seedling infection types produced by Puccinia graminis f.sp. tritici - QSHS.
Crop:
WHEAT
Category:
Disease descriptors
Status:
Crop Germplasm Committee approved
Data Type:
Alpha/numeric descriptor
Maximum Length:
2
Comment:
[+, ++, -, =] indicate variation within an infection; c, b, n indicate chlorosis, browning,
Responsible Site:
National Small Grains Collection (NSGC)


Studies or environments

Distribution of Values for Stem Rust Seedling QSHS (STEMRUSTSE_QSHS)

CodeDefinitionNumber of Accessions
;MOSTLY IMMUNE, NO UREDIA, BUT NUMEROUS HYPERSENSITIVE FLECKS PRESENT72
0IMMUNE; NO UREDIA OR OTHER INDICATIONS OF INFECTION115
0;NEARLY IMMUNE; NO UREDIA BUT A FEW HYPERSENSITIVE FLECKS PRESENT16
1VERY RESISTANT; UREDIA MINUTE, SURROUNDED BY DISTINCT NECROTIC AREAS23
2MODERATELY RESISTANT; UREDIA SMALL TO MEDIUM, USUALLY GREEN ISLANDS SURROUNDED BY A DECIDEDLY CHLOROTIC/NECROTIC BORDER901
SVERY SUSCEPTIBLE; UREDIA LARGE AND OFTEN COALESCING, NO NECROSIS BUT CHLOROSIS MAY BE PRESENT3313
XHETEROGENEOUS; UREDIA VARIABLE, SOMETIMES INCLUDING ALL INFECTION TYPES AND INTERGRADATIONS ON THE SAME LEAF15