Table 4.
QTL putatively associated with CBSD root necrosis resistance in ‘Namikonga’ consistently identified using phenotyping data in Chambezi and Naliendele field experiments during seasons 2013 and 2014
| QTL name | Chromo. | Experimenta | Flanking markers (v 5.1) | Position (cM) | Parental effects | LOD | Unadjusted PVE (%) | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Left marker | Right marker | F | M | FM | ||||||
| qCBSDRNFc2Nm | II | N1 | cII:3454303 | cII:3552915 | 22.1–23.7 | 0.30 | 0.32 | 0.50 | 4.76 | 47.38 |
| qCBSDRNFc2Nm | II | N2 | cII:3454303 | cII:3552915 | 22.1–23.7 | −0.44 | 0.26 | 0.27 | 3.24 | 42.46 |
| qCBSDRNc11.1Nm | XI | C2 | cXI:4527454 | cXI:4617294 | 47.8–54.0 | −0.34 | 0.24 | 0.21 | 7.50 | 17.39 |
| qCBSDRNc11.2Nm | XI | C2 | cXI:4502175 | cXI:4527454 | 36.3–47.8 | 0.00 | 0.30 | −0.02 | 3.81 | 7.54 |
| qCBSDRNc11.2Nm | XI | C1 | cXI:4502175 | cXI:4527454 | 36.3–47.8 | 0.11 | 0.17 | 0.05 | 3.35 | 5.19 |
| qCBSDRNc11.3Nm | XI | C1 | cXI:4617294 | cXI:4760631 | 54.0–55.0 | −0.03 | −0.04 | 0.20 | 3.60 | 5.32 |
| qCBSDRNc18.1Nm | XVIII | C2 | cXVIII:8650285 | cXVIII:8943971 | 70.0–75.9 | 0.10 | 0.01 | 0.64 | 5.10 | 36.83 |
| qCBSDRNc18.2Nm | XVIII | C2 | cXVIII:3106706 | cXVIII:3705640 | 23.8–27.8 | 0.18 | 0.15 | 0.42 | 3.99 | 16.10 |
| qCBSDRNc18.3Nm | XVIII | N2 | cXVIII:6320754 | cXVIII:6502253 | 38.0–41.4 | 0.01 | 0.08 | 0.56 | 3.31 | 37.00 |
SNP marker names are as per Manihot esculenta v5.1 reference genome. Effect F is the estimated additive effect of the female parent (Namikonga). Effect M is the estimated additive effect of the male parent (Albert). Effect FM is the dominance effect between male and female markers
a N1 = Naliendele 2013, N2 = Naliendele 2014, C1 = Chambezi 2013, C2 = Chambezi 2014 and PVE = % phenotypic variation explained