Descriptor: Crown rust (CROWN RUST)



 
Definition:
Resistance to crown rust caused by Puccinia coronata
Crop:
GRASS-COOLSEASON
Category:
Disease descriptors
Status:
Crop Germplasm Committee approved
Data Type:
Alpha/numeric descriptor
Maximum Length:
1
Responsible Site:
Western Regional PI Station (W6)

Distribution of Values for Crown rust (CROWN RUST)

CodeDefinitionNumber of Accessions
1ONE TO TWO 1-mm LESSIONS PER LEAF12
2THREE TO FIVE 1-mm LESSIONS PER LEAF97
3FEW LESSIONS SOME > 1mm211
4FEW LESSIONS MOST > 3mm138
5MODERATE NUMBER OF LESSIONS, SOME > 5mm96
6MODERATE NUMBER OF LESSIONS, MOST > 5mm68
7MANY LESSIONS47
8LESSIONS COALESCING20