| ABA | abscisic acid |
| AZ | abscission zone |
| DIST | flower pedicel fragments above AZ |
| ET | ethylene |
| H2O2 | hydrogen peroxide |
| HG | homogalacturonans |
| IAA | Indole-3-acetic acid |
| PG | polygalacturonase |
| PIN | PIN-FORMED |
| PME | pectin methylesterase |
| PROX | stem fragments below the AZ |
| RG | rhamnogalacturonans |
| ROS | reactive oxygen species |
| TIBA | 2,3,5-triiodobenzoic acid |
| TIR1 | TRANSPORT INHIBITOR RESPONSE 1 |
| VB | vascular bundles |
| WHC | water holding capacity |
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