Buletin Kebun Raya

75-84

Authors: Florentina Indah Windadri, Dewi Susan

Exploration and collection of mosses have been conducted in Raja Ampat islands (Waigeo, Batanta, and Salawati islands), The result recorded 85 collection numbers of mosses, consist of 56 species that belong to 25 genera and 11 families. Four species namely Calymperes palisotii, Ectropothecium monumentorum, Macromitrium orthostichum, Thuidium tamariscellum have status as new records to New Guinea and Taxithelium bakeri and Taxithelium oblongifolium are two new records to Indonesia .

93-100

Authors: Dyah Subositi, Yuli Widiyastuti

Ekinase (Echinacea purpurea (L.) Moench) a medicinal plant that has immunostimulatory activity. This plant has been cultivating in Tawangmangu region by Medicinal Plant and Traditional Medicine Research and Development Office since 2002. Ten accessions of E. purpurea were found based on their morphological variation, three accessions of them are selected as promising accessions namely BH2, BHU3 dan BHU5. The objective of this research was to observe the genetic diversity of those promising accessions and 8 variants accession from mass selection year I using RAPD analysis. Those accessions were amplified using 10 RAPD primers. A total of 64 scorable fragments were generated from 9 RAPD primers, among which 48 fragments (75%) were polymorphic. The Dice coefficient was used to calculated the genetic similarity and UPGMA was used to generate the dendogram. The genetic similarity index among accessions evaluated ranged from 75,49-84,21% thus indicating that low level of genetic diversity. RAPD analysis proved to be efficient for genetic diversity of ekinase accessions from mass selection year I.

115-130

Authors: Yusi Rosalina, Kuswata Kartawinata, Nisyawati Nisyawati, Erwin Nurdin, Jatna Supriatna

This study was conducted to collect information regarding carbon storage, particularly the carbon stored in the aboveground biomass as well as in the peat soil. The study site was in a conservation area of the PT National Sago Prima belonging to the PT Sampoerna Agro Tbk. Group. The work was undertaken in January-February 2012. The total aboveground biomass and carbon storage in the research site indicates that the conservation area is a secondary peat swamp forest, with the biomass of 149.18 ton/ha and carbon stock of 70.12 ton C/ha. The aboveground biomass and carbon consisted of biomass and carbon of tree (83.97 ton/ha containing 39.47 ton C/ha, respectively), saplings (20.69 ton/ha containing 9.72 ton C/ha) and seedlings and undergrowth plants (0.03 ton/ha containing 0.01 ton C/ha), wood necromass (24.06 ton/ha containing 11.31 ton C/ha), and litter (20.44 ton/ha containing 9.61 ton C/ha). An allometric equation was developed for Pandanus atrocarpus Griff. providing an estimated total biomass and carbon of 5.16 ton/ha containing 2.42 ton C/ha. The underground C with the mean peat depth of 5.5 m, mean bulk density of 0.18 g/cm3, and the mean organic C of 46.6 % was 464.895,94 ton C/ha. In the entire conservation forest area of 541 ha the total aboveground biomassa and carbon storage was estimated to be 80,708.64 ton and 37,934.00 ton C, while the total underground carbon was 238,96 million MT C.