Storage, germination seeds and initial growth of Enterolobium contortisiliquum (Vell.) Morong seedling.
A study was conducted to determine the germination potential of orelha de macaco (Enterolobium contortisiliquum) seeds after 5, 8 or 12 months of storage, and after pre-germination treatments which included scarification and imbibition. Seeds were treated with: (1) H2SO4 for 5 min; (2) H2SO4 5 min + water for 24 h; (3) H2SO4 for 5 min + 200 mg/litre GA for 24 h; (4) H2SO4 for 5 min + 1% KNO3 for 24 h; (5) H2SO4 for 10 min; (6) H2SO4 for 10 min + water for 24 h; or (7) H2SO4 for 10 min + 200 mg/litre GA for 24 h. Seeds were sown in a germination chamber under 20/30°C darkness/light. Seedlings were either kept under 30% shade or 50% under the sun. Results showed that seeds could be stored up to 12 months achieving a high germination percentage when scarified for 5 or 10 min without pre-imbibition. Under 30% of shadow, seedlings showed higher AF, MST, MFF, PA/R. Cultivation under the sun is not recommended for seedling growth.