Table 3.
Resistance profiles of SrTm5 and Sr22 to multiple Puccinia graminis f. sp. tritici races
| Pgt race | SrTm5, 2x Pi23-15/Pi54-3 | Sr22TB, 6x cv. Schormburgka | Sr22, 2x PI 190945a | No Sr gene, 2x PI 272557a |
|---|---|---|---|---|
| TTKSK | ;1 | 2 − | 1 | 4 |
| TTKST | ; | Not available | Not available | Not available |
| MCCFC | 1; | 2 − | ;1 | 4 |
| QFCSC | 3 + | ;2 − | ;1 − | 4 |
| TRTTF | 3 + | 2 −; | 1; | 3 + |
| TTTTF | 3 + | 2 | 2 − | 4 |
Infection types for SrTm5 are from selected lines Pi23-15 and Pi54-3, whereas Sr22 infection types are from T. aestivum cultivar Schormburgk and T. monococcum ssp. monococcum accession PI 190945. PI 272557 was used as susceptible check. PI 190945 carries Sr22 and does not carry Sr60 or Sr21
2x diploid wheat T. monococcum, 6x hexaploid wheat T. aestivum
aBased on Steuernagel et al. (2016) and Rouse and Jin (2011a). Reductions in the resistance levels have been observed for other resistance genes when transferred from a lower to a higher ploidy level (McIntosh et al. 2011)