Annona purpurea (soncoya) exhibits seed dormancy requiring 6+ months storage or growth regulator treatment. Seeds have physiological dormancy that restricts germination.
Before sowing
Soak
72 h Warm-dry storage for 6+ months or gibberellic acid treatment effective
GA3 (500 mg L-1, 72h imbibition) or GA4+7 + BA (200 mg L-1) recommended to break dormancy
Sowing
Substrate
Loam with organic matter, sand or perlite
Depth
levemente_coberta
Temperature
23°C
Moisture
alta
What to expect
Step 1
Pre-treat the seed
Step 2
Sow at levemente_coberta · 23°C
Day 21–180
Seedlings emerge (~30%)
Tips
Maintain high humidity; keep substrate moist; gibberellic acid treatments break dormancy more effectively than mechanical/chemical scarification; seeds are dormant naturally for ecological adaptation
Sources: Monaco Nature Encyclopedia, Scielo Brazil (Gomez-Castaneda et al. 2003), ResearchGate studies, Wikipedia, scientific germination studies
