COSE · AstroBotany · in-silico tropisms

🌱 Seed Germination Simulator

Model version: v1 (original) v2 (calibrated) v3 (gradient) v4 (EMF)

Sow seeds in a virtual Petri dish and watch them germinate over 14 days. Roots grow toward gravity and away from light (negative phototropism); laterals branch at bends, and each leaf's petiole lengthens in dim light. Change gravity from 0 g (microgravity) to 6 g, steer the light, and see how tropisms reshape the seedlings. Runs entirely in your browser.

▶ Start simulation Code & model (GitHub) AstroBotany hub
Day 0.0 / 14 Time 06:00 ☀︎ Seeds 8 Avg primary root 0 u Laterals 0 Light 100% Gravity 1.0 g

Simulation

4×
14 d
8
±60°

Micropyle = spread of initial root-exit angles across the seeds.

Gravity

1.0g
90°

Light

100%
270°
fff

Colour is visual only — this model responds to light intensity & direction, not wavelength.

Display & data

Time series

Avg primary root length (u) Light intensity (%) Gravity (g ×10)