| Genus | Family | Order | Species | Genome length | Top marker | Markers | Primers | Action |
|---|---|---|---|---|---|---|---|---|
| Jacobaea | Asteraceae | Asterales | 2 | 151–154 kb | ccsA (83.0) | 271 | 75 | View |
| Jaltomata | Solanaceae | Solanales | 2 | 155–156 kb | rpl32-sprA (65.9) | 272 | 95 | View |
| Jansenella | Poaceae | Poales | 2 | 140–140 kb | rps19-psbA (61.9) | 267 | 95 | View |
| Jasminum | Oleaceae | Lamiales | 14 | 144–164 kb | rps15-ycf1 (85.0) | 270 | 80 | View |
| Jatropha | Euphorbiaceae | Malpighiales | 2 | 164–170 kb | trnS-GCU-trnG-GCC (87.4) | 267 | 85 | View |
| Jenufa | — | — | 2 | 198–207 kb | trnE(uuc)-trnF(gaa) (85.2) | 259 | 75 | View |
| Jovibarba | Crassulaceae | Saxifragales | 2 | 151–151 kb | psbA (40.0) | 269 | 55 | View |
| Jubula | Jubulaceae | Porellales | 2 | 118–118 kb | psbl-psbK (76.5) | 270 | 100 | View |
| Juglans | Juglandaceae | Fagales | 14 | 160–161 kb | trnM-CAU-psbD (67.7) | 277 | 90 | View |
| Juniperus | Cupressaceae | Cupressales | 9 | 127–128 kb | atpF-atpA (80.1) | 246 | 80 | View |
| Jurinea | Asteraceae | Asterales | 4 | 152–153 kb | trnE-UUC-rpoB (65.3) | 272 | 90 | View |
| Justicia | Acanthaceae | Lamiales | 11 | 148–152 kb | trnS (GCU)-trnG (UCC) (90.5) | 272 | 105 | View |
