Table 5.
QTLs identified for traits related to nutritional quality from the sexual genotype “S10” and apomictic cv. ‘Mombaça’ of guinea grass (Megathyrsus maximus).
| Nutritional trait | QTL | HG | Position (cM) | LOD | R² | Parents |
|---|---|---|---|---|---|---|
| Leaf organic matter (OM_L) | qOM_L1 | V | 87.0 | 4.15 | 8.3 | S10 |
| qOM_L2 | VI | 48.0 | 3.81 | 6.7 | ‘Mombaça’ | |
| Stem organic matter | qOM_S3 | I | 63.0 | 3.85 | 7.85 | S10 |
| (OM_S) | qOM_S4 | VII | 68.0 | 4.76 | 11.44 | both |
| qOM_S5 | VIII | 36.0 | 4.35 | 7.19 | both | |
| Leaf crude protein (CP_L) | qCP_L6 | III | 34.0 | 3.43 | 5.10 | both |
| qCP_L7 | V | 65.0 | 4.32 | 9.68 | both | |
| Stem crude protein (CP_S) | qCP_S8 | V | 33.0 | 3.84 | 8.40 | ‘Mombaça’ |
| qCP_S9 | VIII | 6.0 | 2.84 | 3.17 | S10 | |
| Leaf neutral detergent fiber (NDF_L) | qNDF_L10 | I | 15.0 | 3.64 | 6.09 | both |
| qNDF_L11 | II | 48.0 | 5.49 | 12.08 | both | |
| qNDF_L12 | III | 33.0 | 3.51 | 6.83 | both | |
| qNDF_L13 | IV | 14.0 | 4.30 | 6.84 | both | |
| qNDF_L14 | VII | 69.0 | 3.74 | 7.81 | ‘Mombaça’ | |
| Stem neutral detergent fiber | qNDF_S15 | I | 15.0 | 3.61 | 6.01 | both |
| (NDF_S) | qNDF_S16 | II | 48.0 | 5.50 | 12.07 | both |
| qNDF_S17 | III | 33.0 | 3.5 | 6.81 | both | |
| qNDF_S18 | IV | 14.0 | 4.31 | 6.87 | both | |
| qNDF_S19 | VII | 69.0 | 3.75 | 7.85 | ‘Mombaça’ | |
| Leaf acid detergent fiber (ADF_L) | qADF_L20 | I | 57.0 | 3.98 | 8.84 | S10 |
| qADF_L21 | V | 59.0 | 4.0 | 8.07 | both | |
| qADF_L22 | VI | 45.0 | 3.08 | 2.46 | both | |
| Stem acid detergent fiber (ADF_S) | qADF_S23 | V | 45.0 | 3.48 | 6.21 | ‘Mombaça’ |
| qADF_S24 | VI | 88.0 | 2.86 | 4.05 | ‘Mombaça’ | |
| qADF_S25 | VII | 93.0 | 3.41 | 5.90 | Both | |
| qADF_S26 | VIII | 41.0 | 3.04 | 4.05 | S10 | |
| Leaf in vitro digestibility of organic matter (IVD_L) | qIVD_L27 | III | 20.0 | 3.8 | 5.85 | S10 |
| Stem in vitro digestibility of organic matter (IVD_S) | qIVD_S28 | V | 37.0 | 3.55 | 7.31 | ‘Mombaça’ |
| qIVD_S29 | VIII | 6.0 | 3.91 | 5.84 | ||
| Leaf cellulose (CEL_L) | qCEL_L30 | I | 55.0 | 4.69 | 10.85 | both |
| Stem cellulose (CEL_S) | qCEL_S31 | VIII | 37.0 | 3.02 | 3.37 | both |
| Leaf permanganate lignin (PL_L) | qPL_L33 | III | 74.0 | 3.86 | 6.18 | ‘Mombaça’ |
| Stem permanganate lignin (PL_S) | qPL_S34 | VIII | 7.0 | 2.7 | 2.78 | both |
| Leaf silica (SIL_L) | qSIL_L35 | III | 94.0 | 3.70 | 5.68 | ‘Mombaça’ |
| qSIL_LF36 | VII | 36.0 | 4.63 | 10.63 | S10 | |
| Stem silica (SIL_S) | qSIL_S37 | VIII | 61.0 | 2.96 | 4.23 | both |