Descriptor: Powdery Mildew (POWDERYMIL)



 
Definition:
Reaction to Powdery Mildew (incited by Erysiphe graminis f.sp. Tritici). Rated at Feekes growth stage GS 10.3.
Crop:
WHEAT
Category:
Disease descriptors
Status:
Crop Germplasm Committee approved
Data Type:
Alpha/numeric descriptor
Maximum Length:
2
Responsible Site:
National Small Grains Collection (NSGC)

Distribution of Values for Powdery Mildew (POWDERYMIL)

CodeDefinitionNumber of Accessions
00 to < 1% leaf area affected on any leaf1055
11-50% leaf area affected on fourth leaf988
10> 15% leaf area affected on flag leaf611
21-5% leaf area affected on third leaf1234
35-15% leaf area affected on third leaf1177
4> 15% leaf area affected on third leaf1261
51-5% leaf area affected on second leaf2109
65-15% leaf area affected on second leaf1416
7> 15% leaf area affected on second leaf1713
81-5% leaf area affected on flag leaf1585
95-15% leaf area affected on flag leaf822