Flowering & Reproductive Development
Senescence, Maturation & Stress Differentials
Late-flowering changes can include normal developmental senescence, but yellowing, necrosis, wilt, or flower discoloration may also reflect root stress, disease, salinity, or environmental injury. Timing alone does not make every symptom normal fade.
Key concepts
- Senescence is developmentally regulated
- Stress can accelerate or mimic senescence
- Different tissues age at different rates
- Maturity decisions should include disease inspection
What to measure or observe
- Map which tissues are declining first
- Inspect roots and flower interiors
- Track progression across days
- Compare with cultivar history and healthy plants at the same stage
Common mistakes
- Calling all late yellowing normal
- Ignoring rapid branch-specific decline
- Using stigma color alone as maturity
- Harvesting diseased tissue as if it were normal senescence
Visuals this lesson still needs
- Senescence-versus-stress comparison
- Late-flower symptom locator
- Maturity and disease inspection checklist
- Progression timeline