LEVEL 07 · LESSON 06
Necrosis and poor growth
See it
Shoot-tip necrosis, tissue death, weak elongation, or stalled growth can have nutritional, physiological, environmental, developmental, or handling causes. Good troubleshooting preserves the exact pattern rather than labeling everything ‘bad growth.’
Understand it
Record which tissue died first and when.
Compare stage, vessel, medium version, and batch history.
Check whether the problem clusters by genotype or treatment.
Important boundary
Do not change the canonical recipe silently in response to one weak batch.
Try it
Explain the concept in your own words, then identify what plant, explant, stage, units, source, or observation context would need to be preserved before applying it.
Lesson quiz
Apply it
Connect this lesson to an actual MyTCLab record: what fields would you need in order to know later exactly what happened and why?