Table 1.
List of three advanced backcross breeding lines, check varieties and recurrent and donor parents used in this study
| Cultivar/breeding line | Description (generaton)z | Cross | Gene | Remarks |
|---|---|---|---|---|
| Mangeumbyeo | Recurrent parent | Milyang71/Saikai PL1 | Unknown | Korean elite japonica variety |
| IRBB57 | Donor parent | IR24/Xa4 + xa5 + Xa21 | Xa4 + xa5 + Xa21 | Multi-R-gene NILs (indica) |
| SR30075-1-1-13-3-1-26-1 | ABL4225 (BC3F5) | Mangeumbyeo*4/IRBB57 | Xa4 + xa5 + Xa21 | Mangeumbyeo genetic background |
| SR30075-1-1-13-40-1-26-1 | ABL4228 (BC3F5) | Mangeumbyeo*4/IRBB57 | Xa4 + xa5 + Xa21 | Mangeumbyeo genetic background |
| SR30075-2-1-3-25-1-1-1 | ABL4242 (BC3F5) | Mangeumbyeo*4/IRBB57 | Xa4 + xa5 + Xa21 | Mangeumbyeo genetic background |
| IRBB4 | Check | IR24/TKM6 | Xa4 | Near-isogenic line for BB (indica) |
| IRBB5 | Check | IR24/DZ192 | xa5 | Near-isogenic line for BB (indica) |
| IRBB21 | Check | IR24/O. longistaminata | Xa21 | Near-isogenic line for BB (indica) |
z ABL: advanced backcross breeding lines having Xa4 + xa5 + Xa21 genes.