ABSTRACT. Mangroves are various types of trees up to medium height and shrubs that grow in saline coastal sediment habitats in the tropics and subtropics mainly between latitudes 25° N and 25° S. Mangrove ecosystems represent natural capital capable of producing a wide range of goods and services for coastal environments and communities and society as a whole. Some of these outputs, such as timber, are freely exchanged in formal markets. Value is determined in these markets through exchange and quantified in terms of price. Particularly the mangroves of Rhizophoraceae have so many ecological importances. Breeding and nursery grounds for a number of marine organisms including the commercially important shrimp crab and fish species. Mangrove trees are also used for house building, furniture, transmission as well as telephone poles and certain household items. Mangrove trees have been the source of firewood in India since ancient time. Because of the high specific gravity of rhizophoraceous wood, the species of Rhizophora, Kandelia, Ceriops and Bruguiera are preferred for firewood.
The aim of the present study was to investigate the presence of phytochemical compounds and GCMS analysis of Corbichonia decumbens. The Soxhlet apparatus was used for the organic solvent extraction. Solvents used were hexane and ethanol. The results showed in preliminary phytochemical analysis alkaloids, flavonoids, saponins, glycosides, steroids were observed in hexane and ethanolic extracts. The phenols and tanins were present only in ethanolic extract. The GC-MS analysis has shown the presence of different phytochemical compounds in the ethanolic extract Corbichonia decumbens. A total of 30 compounds were identified representing 84.49% of total methanolic extract composition. Our findings provided evidence that organic solvent extracts of tested plant contain medicinally important bioactive compounds and it justifies their use in the traditional medicines for the treatment of different diseases.
Vegetative propagation could be an important advantage and also envisioned to be the best alternative for planting stock production in the absence or lack of seeds. In the Pichavaram mangrove forest Ceriops decandra (Rhizophoraceae) is one of the most endangered species and IUCN also declared this species as near threatened. Propagation of Ceriops decandra, by propagule cuttings, treated with Plant growth regulators is feasible and it was possible to produce three saplings from one propagule. The effect of plant growth regulators like IBA, NAA, GA3 on optimum growth medium and period of nursery care for mangrove saplings of Ceriops decandra were studied and the results revealed that best growth performance was recorded when the cuttings were treated with GA3 alone up to 2000 ppm. Combination of NAA and IBA increased the rooting and leaf formation. Among the treatments GA3 enhanced the number of leaves and roots, Shoot and root length, fresh and dry weight of roots increased to larger extent. All the plants are transferred to field in the mangrove forest of Pichavaram, Tamilnadu, India.ECOPRINT 22: 21-28, 2015
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