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All Journal Buletin Kebun Raya
Eka Martha Della Rahayu
Pusat Konservasi Tumbuhan Kebun Raya Bogor - LIPI, Jl. Ir. H. Juanda No. 13, Bogor, Indonesia
Agriculture, Biological Sciences & Forestry

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UPAYA KONSERVASI EX SITU DIPTEROCARPACEAE DI KEBUN RAYA BOGOR Rahayu, Eka Martha Della
Buletin Kebun Raya Vol 12, No 2 (2009): Buletin Kebun Raya Vol. 12 (2) Juli 2009
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

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Abstract

Malesia is the center of Dipterocarps diversity in the world, with most species found in Indonesia. Sadly, their existence is threatened by illegal logging, extensive exploitation, and habitat conversion. There are 143 Indonesian Dipterocarps categorized as threatened in the IUCN Red List. Bogor Botanic Garden (BBG) is one of the leading institutions focuses on ex situ conservation of plants. Dipterocarps collection in the BBG represents 41.5% of Dipterocarps of Sumatra, 17.0% of Dipterocarps of Kalimantan, 77.8% of Dipterocarps of Java, 66.7% of Dipterocarps of Bali and Nusa Tenggara, 57.1% of Dipterocarps of Sulawesi, 66.7% Dipterocarps of Moluccas, and 8.3% Dipterocarps of Papua. Totally, BBG has only conserved about 37.8% of threatened Indonesian Dipterocarps, still far from the target aimed by the Global Strategy for Plant Conservation (60% conserved). The BBG has initiated genetic resource conservation of Dipterocarps, through seed preservation. Since most Dipterocarps have recalcitrant seeds, conventional storage methods cannot be used. One of the alternative solutions is to cryopreserve the excised embryo or embryonic axes to overcome the limits of conventional storage methods. Collection of threatened and endemic species along with research on embryo culture and cryopreservation should be intensified in the future.
UPAYA KONSERVASI EX SITU DIPTEROCARPACEAE DI KEBUN RAYA BOGOR Rahayu, Eka Martha Della
Buletin Kebun Raya Vol 12, No 2 (2009): Buletin Kebun Raya Indonesia Vol. 12 (2) July 2009
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

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Abstract

Malesia is the center of Dipterocarps diversity in the world, with most species found in Indonesia. Sadly, their existence is threatened by illegal logging, extensive exploitation, and habitat conversion. There are 143 Indonesian Dipterocarps categorized as threatened in the IUCN Red List. Bogor Botanic Garden (BBG) is one of the leading institutions focuses on ex situ conservation of plants. Dipterocarps collection in the BBG represents 41.5% of Dipterocarps of Sumatra, 17.0% of Dipterocarps of Kalimantan, 77.8% of Dipterocarps of Java, 66.7% of Dipterocarps of Bali and Nusa Tenggara, 57.1% of Dipterocarps of Sulawesi, 66.7% Dipterocarps of Moluccas, and 8.3% Dipterocarps of Papua. Totally, BBG has only conserved about 37.8% of threatened Indonesian Dipterocarps, still far from the target aimed by the Global Strategy for Plant Conservation (60% conserved). The BBG has initiated genetic resource conservation of Dipterocarps, through seed preservation. Since most Dipterocarps have recalcitrant seeds, conventional storage methods cannot be used. One of the alternative solutions is to cryopreserve the excised embryo or embryonic axes to overcome the limits of conventional storage methods. Collection of threatened and endemic species along with research on embryo culture and cryopreservation should be intensified in the future.
INDUKSI POLIPLOIDI MENGGUNAKAN KOLKISIN SECARA IN VIVO PADA BIBIT ANGGREK BULAN (Phalaenopsis amabilis (L.) BLUME) Rahayu, Eka Martha Della; Sukma, Dewi; Syukur, M.; Aziz, Sandra A.; Irawati, Irawati
Buletin Kebun Raya Vol 18, No 1 (2015): Buletin Kebun Raya Vol. 18 (1) January 2015
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

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Induksi poliploidi pada bibit Phalaenopsis amabilis telah dilakukan menggunakan kolkisin secara in vivo. Induksi poliploidi dilakukan dengan meneteskan kolkisin pada pucuk bibit P. amabilis.  Tujuan penelitian ini adalah untuk mendapatkan konsentrasi kolkisin yang efektif untuk induksi poliploidi bibit P. amabilis dan  menghasilkan bibit P. amabilis poliploid. Percobaan disusun dalam rancangan kelompok lengkap teracak dengan satu faktor, yaitu konsentrasi kolkisin. Pucuk bibit P. amabilis ditetesi 0,01 ml kolkisin (0, 1000, 2000, 3000, 4000, dan 5000 mg L-1). Hasil percobaan menunjukkan bahwa peningkatan konsentrasi kolkisin dari 1000 sampai 5000 mg L-1 tidak berpengaruh nyata terhadap persentase hidup dan pertumbuhan bibit pada 24 minggu setelah perlakuan (24 MSP). Bibit P. amabilis poliploid dapat dihasilkan pada penetesan kolkisin 1000, 3000, 4000, dan 5000 mg L-1 dengan konsentrasi kolkisin paling efektif adalah 5000 mg L-1. Bibit poliploid memiliki ukuran stomata lebih besar dari bibit diploid sebaliknya kerapatan stomatanya lebih rendah.
Co-Authors Dewi Sukma Irawati Irawati M. Syukur Sandra A. Aziz