Propagation & Cloning
Cutting Wound Response & Adventitious Rooting
Rooting a cutting requires living stem tissues to survive excision, reorganize growth, and initiate adventitious roots. Wound response, carbohydrate status, hormones, oxygen, water balance, and temperature interact during this transition.
Key concepts
- A detached cutting must maintain water balance before a new root system is functional
- Adventitious roots arise from responsive tissues near the stem base and vascular regions
- Hormonal signals interact with tissue age and carbohydrate status
- Root initiation and visible root emergence are different stages
What to measure or observe
- Record cutting date and first visible root date
- Inspect stem-base condition without repeatedly damaging tissue
- Track turgor and leaf posture
- Compare rooting speed among batches without assuming one cause for variation
Common mistakes
- Equating callus with guaranteed root formation
- Repeatedly pulling cuttings from media to check roots
- Treating rooting as only a humidity problem
- Ignoring stem-base decay or oxygen limitation
Visuals this lesson still needs
- Adventitious-root initiation cutaway
- Wound-to-root timeline
- Callus-versus-root distinction
- Stem-base tissue sequence