E-Journal Center for Plant Conservation Botanic Gardens-LIPI (Indonesian Institute of Sciences / Lembaga Ilmu Pengetahuan Indonesia)
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VARIASI SERAPAN KARBONDIOKSIDA (CO2) JENIS-JENIS POHON DI “ECOPARK”, CIBINONG DAN KAITANNYA DENGAN POTENSI MITIGASI GAS RUMAH KACA
Get PDFThis research aims to assess the contribution of biological diversity in CO2 absorption by analyzing the physiological characteristics (CO2 absorption, transpiration, stomatal conductance, leaf chlorophyll content) of tree species in a conservation area of “Ecopark”, Cibinong. The results were meant to provide information on CO2 absorption of some tree species suitable for revegetation. The results showed that there was a wide range of variation of CO2 assimilation rate among tree species. The overall CO2 assimilation rate ranged from 2.86 to 16.45 µmolm-2s-1. The highest CO2 absorption was Pometia pinnata (16.45 molm-2s-1 ), followed by Garcinia xanthochymus (11.40 µmolm-2s-1), Syzygium polyanthum (10.99 µmolm-2s-1), Syzygium polycepaliodes (10.89 µmolm-2s-1), and Palaquium obtusifolium (10.41 µmolm-2s-1). Transpiration rate was recorded between 1.29 mmolm-2s-1 (Maniltoa grandiflora) and 7.85 mmolm-2s-1 (Euphoria longan). The rate of CO2 assimilation was affected by solar radiation and thus the quantum leaf (Q leaf), stomatal conductance, as well as leaf chlorophyll content. Trees species that have characteristics of high CO2 absortion and efficient in maintaining water balance (low transpiration rate), are suitable for green house gas mitigation
KERAGAMAN GENETIK AKSESI EKINASE (Echinacea purpurea (L.) Moench) HASIL SELEKSI MASSA TAHUN 1 MELALUI ANALISIS RAPD
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Rhododendron javanicum (Blume) Benn. AND Rhododendron sessilifolium J.J. Sm. GERMINATION AND SEEDLINGS DEVELOPMENT ON DIFFERENT GROWING MEDIA AND FERTILIZERS APPLICATION
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PERKECAMBAHAN DAN PERTUMBUHAN SEMAI Artocarpus altissimus J.J. Smith
Get PDFThe research was conducted to understand seed germination and seedling growth of Artocarpus altissimus. The experimental design used was completely randomized with 2 factors, i.e. seed storability and media factors for the response capacity of germination, media and NPK fertilizer factors for seedling growth response (height and number of leaves). The result showed that A. altissimus seeds had long enough storability/ potential age without a period of dormancy. Storability, media and interaction both showed very significant effect on the germination capacity with the highest mean value on the storability category of 3 and 1 month and media category of compost and sand. On variable of seedlings height, NPK fertilizer showed significant effect, media and interaction of media and NPK had very significant effect with the best factor category was a media category of TSKn (soil, chaff and manure)
