Tropical seed bank management : germination and nutrients composition of the seeds and fruits of several wild-riverine trees in Loagan Bunut National Park
2006
P. Bulan | C.S. Tawan | I. Ipor | I. Jusoh | M. Demies | A.K. Sayok
Seeds in a seed bank include seeds buried in the soil, those on the forest floor, seeds of matured fruits on trees, and those consumed and temporarily stored in transit by fishes and animals. The viability of seeds in each group of seed maturity varied, with germination being high (80%) for optimum-matured (M2) and low (10%) for less-matured (M3) fruits for five species of wild fruit trees. Eugenia sp. germinated well (65%, 80% and 85% for over-matured, less-matured and optimum-matured fruits respectively, for nine days of germination), implying that this species survives better and longer as a source of seed bank. The fruit and seed of Cassia parvilofus are high in protein and fat, and might be consumed by birds and small mammals. Other species (Eugenia spp. Ixora sp. and memecylon sp.) have fleshy and tasty pericarps and the seeds have high amount of carbohydrate, protein and fat, and the fruits are food for fishes (Mystua sp., Calarias spp., Osphronemus guoramy and Amyda cartilagenea) and turtles. The seed of the five species of trees have high macronutrient contents than the pericarp and fruit. C. parvilofius exhibited a high level of iron (Fe) in the pericarp (300 ppm) and seed (488 ppm).
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