| Abbrev | Name |
|---|---|
| Wh | Winterhardiness |
| Wra | Rose wheat aphid (Metapolohium dirhodum Walker) |
| Wsbmv | Wheat soilborne mosaic virus (WSBMV) |
| Wsmv | Wheat streak mosaic virus (WSMV) |
| Wssmv | Wheat spindle streak mosaic virus (VSSMV) |
| Wymv | Wheat yellow mosaic virus (potyvirus) (WYMV) |
| Yr | Yellow rust, stripe rust (Puccinia striiformis West.) |
| Ysca | Yellow sugarcane aphid (Sipha flava Forbes) |
| Ysd | Yellow slime disease, tundu (Pseudomonos tritici Hutch.) |
| Zn | Zn-deficient soil |