Record genotype identity, plant age/stage, environmental history, affected fraction, symptom progression, and comparison plants.
Visual lesson 06
Genotype × environment context
Use cultivar baselines, repeatability, developmental stage, environment, and plant-to-plant comparison to distinguish a stable phenotype from a newly emerging stress or disease pattern.
Phenotype reasoning
Interactive concept mapObserved phenotype = genotype × environment × development
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Establish baseline
Compare the plant with healthy examples of the same genotype and developmental stage whenever possible.
A repeatable cultivar trait can resemble stress, and a real stress can interact with genotype. Use comparison evidence instead of universal visual labels.
Knowledge check
PracticeCan you explain what the visual is showing?
Why should a repeated trait across one cultivar not automatically be treated as a universal deficiency or disease symptom?
Track this lesson
Mark the lesson complete when you are comfortable with the visual, observations, and system context.
Evidence & further reading
Sources connected to this lesson
These references support specific biological, diagnostic, environmental, or process concepts used in this lesson. They are not a substitute for crop-specific testing or local regulatory guidance.Cannabis photosynthetic and stomatal responses to water deficit, genotype-dependent drought response, biomass partitioning, and physiological interpretation under measured conditions.
Cannabis greenhouse disease diagnosis and integrated management, including powdery mildew, Botrytis, root disease, HLVd, sanitation, irrigation, airflow, and post-harvest microbial risk.
Cannabis leaf morphogenesis, phyllotaxy, plant architecture, reproductive transition, inflorescence development, trichome development, and senescence across a complete life cycle.
System context