List of Maize Candidate Genes and QTLs for Sugar Content
| Symbol | Bin(maize) | Name and/or gene product |
| su1 | 4.05 | sugary1, isoamylase |
| su2 | 6.04–6.05 | sugary2, starch branching enzyme? |
| sh1 | 9.01 | shrunken1, sucrose synthase |
| sh2 | 3.09 | Shrunken2, ADP glucose Pyrophosphorylase |
| se1 | 2.10 | sugary-enhancer1 |
| bt2 | 4.05 | brittle endosperm2, ADP glucose pyrophosphorylase |
| sps1 | 8.06 | sucrose-phosphate synthase1 |
| sus1 | 9.04 | sucrose synthase |
| Qagp3 | 10.05–10.07 | QTL ADP glucose pyrophosphorylase activity 3 |
| Qsps1 | 1.08–1.10 | SPS QTL1 |
| Qsps2 | 2.06–2.07 | SPS QTL2 |
| Qsps3 | 4.07–4.08 | SPS QTL3 |