Germinability of seeds stored in capsules on plants of two myrtaceous shrubs: Differences among age cohorts and between species

摘要: Canopy-stored seed banks are a common trait among members of several plant families in sclerophyllous woodlands Australia and South Africa, with their fruits usually opening response to damage or fire. Unknown is whether the degree dormancy germination differs age cohorts seeds stored on mother plant. We examined extent speed from two intensely serotinous myrtaceous species, Callistemon glaucus Calothamnus quadrifidus, for held capsules up 9 years. Germination both species differed significantly (P < 0.0001). However, no consistent increase over range temperatures storage was found, suggesting that after-ripening occurred were non-dormant at maturity. Differences may be due pre-conditioning. Significant (P ≤ 0.0214) differences between small-seeded large-seeded Calothamnus. (1) optimum ≥20°C but <20°C Calothamnus, (2) 9–12 days earlier than (3) higher light darkness equal conditions While important features, we would expect synchronous all occur following fire onset regular rainfall.