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All Journal Natural Science: Journal of Science and Technology BIOTROPIA - The Southeast Asian Journal of Tropical Biology Buletin Kebun Raya REINWARDTIA
Yuzammi Yuzammi
Pusat Konservasi TUmbuhan Kebun Raya - LIPI
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Education Immunology & microbiology Veterinary

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KAJIAN POPULASI ALAMI BUNGA BANGKAI (Amorphophallus titanum (Becc.) Becc.): STUDI KASUS DI KAWASAN HUTAN BENGKULU Hidayat, Syamsul; Yuzammi, Yuzammi
Buletin Kebun Raya Vol 11, No 1 (2008): Buletin Kebun Raya Vol. 11 (1) Januari 2008
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

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Abstract

Amorphophallus titanum (Becc.) Becc. is a species of Aroid family that produces an attractive large-inflorescence. It is well known as one of the largest inflorescence producing species in the world. The plant is endemic to Sumatera Island and has long been considered as a threatened species. However, in 2002, the IUCN removed it from the Red List of Threatened Plants chiefly because of inadequate data regarding the existence of the species in nature. This present study was carried out in Bengkulu as a case study in attempt to provide information concerning the natural population and the potential threats towards the existence of A. titanum in Sumatera. The results of the observation are disccused thoroughly in this paper.
POTENSI BIOMASSA DAN CADANGAN KARBON KEBUN RAYA BALIKPAPAN, KALIMANTAN TIMUR Usmadi, Didi; Hidayat, Syamsul; Yuzammi, Yuzammi; Asikin, Djauhar
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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Abstract

Kebun Raya Balikpapan dengan luas area 309,22 ha merupakan sebagian kecil dari 10.000 ha Hutan Lindung Sungai Wain di Kalimantan Timur, Indonesia, yang dialihfungsikan sebagai Kebun Raya. Salah satu peran Kebun Raya Balikpapan adalah penyedia jasa lingkungan diantaranya mengurangi terjadinya pemanasan global melalui penghasil biomassa dan menjaga cadangan karbon. Tujuan dari penelitian ini adalah untuk mengetahui potensi besarnya biomassa dan cadangan karbon di Kebun Raya Balikpapan serta mengetahui persentase komponen hutan dalam menyumbang cadangan karbon. Data utama diambil dari Kebun Raya Balikpapan dengan menggunakan metode kombinasi jalur dan petak, sedangkan teknik penempatan petak contoh dilakukan secara terarah (purposive sampling). Setiap unit contoh diambil data pohon berdiri, necromass, tumbuhan bawah, serasah dan contoh tanah. Pendugaan potensi biomassa dan karbon pada pohon dilakukan dengan menggunakan metode non destruktif, sedangkan tumbuhan bawah dan serasah dilakukan dengan metode destruktif.  Kebun Raya Balikpapan mempunyai peran yang besar dalam penyimpanan biomassa dan cadangan karbon. Rata-rata biomassa di Kebun Raya Balikpapan sebesar 203,42 ton/ha dan cadangan karbon sebesar 141,55  ton/ha. Total biomassa Kebun Raya Balikpapan sebesar 58.990,8 ton dan cadangan karbon sebesar 41.049,0 ton. Komponen terbesar penyumbang cadangan karbon adalah pohon hidup (48,50%) dan tanah (28,15%).
KAJIAN POPULASI ALAMI BUNGA BANGKAI (Amorphophallus titanum (Becc.) Becc.): STUDI KASUS DI KAWASAN HUTAN BENGKULU Hidayat, Syamsul; Yuzammi, Yuzammi
Buletin Kebun Raya Vol 11, No 1 (2008): Buletin Kebun Raya Indonesia Vol. 11 (1) January 2008
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

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Abstract

Amorphophallus titanum (Becc.) Becc. is a species of Aroid family that produces an attractive large-inflorescence. It is well known as one of the largest inflorescence producing species in the world. The plant is endemic to Sumatera Island and has long been considered as a threatened species. However, in 2002, the IUCN removed it from the Red List of Threatened Plants chiefly because of inadequate data regarding the existence of the species in nature. This present study was carried out in Bengkulu as a case study in attempt to provide information concerning the natural population and the potential threats towards the existence of A. titanum in Sumatera. The results of the observation are disccused thoroughly in this paper.
The genus Amorphophallus Blume ex Decaisne (Araceae - Thomsonieae) in Java Yuzammi, Yuzammi
REINWARDTIA Vol 13, No 1 (2009): Vol. 13 No. 1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1231.606 KB) | DOI: 10.14203/reinwardtia.v13i1.8

Abstract

An Alpha-taxonomic account of Amorphophallus Blume ex Decaisne in Java including key identification to the species is presented. Eight species are recognized in Java, of which five species are endemic. Full description as well as the usages of some species as source of starch are presented.
CONSERVATION STATUS OF AMORPHOPHALLUS DISCOPHORUS BACKER & ALDERW. (ARACEAE) IN JAVA, INDONESIA Yuzammi, Yuzammi
REINWARDTIA Vol 14, No 1 (2014): Vol. 14 No. 1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v14i1.392

Abstract

Amorphophallus discophorus Backer & Alderw. is one of the Javan endemic aroid species. This species is locally endemic to the slopes of Mount Wilis in Kediri Regency (East Java) at elevations between 600-1300 m. Poorly known species like A. discophorus could easily become extinct if not distinguished from other species, such as A. muelleri, that are used for commercial purposes. The conversion of natural forests for agriculture over the last decade has resulted in a loss of suitable habitat for this species. Several field trips undertaken to locate natural populations of this species have proved unsuccessful. Based on these field exercises, A. discophorus is regarded as presumed extinct in the wild.
STUDI BEBERAPA ASPEK BOTANI AMORPHOPHALLUS PAEONIIFOLIUS DENNST. NICOLSON (ARACEAE) DI LEMBAH PALU Jintan, Jintan; Yuzammi, Yuzammi; Suwastika, I Nengah; Pitopang, Ramadhanil
Natural Science: Journal of Science and Technology Vol 4, No 1 (2015): Volume 4 Number 1 (March 2015)
Publisher : Univ. Tadulako

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Abstract

Penelitian tentang tumbuhan Amorphophallus paeoniifolius Dennst. Nicolson di Lembah Palu dilakukan dengan metode survey dan metode deskriptif pada bulan Desember 2011 sampai April 2012.  Penelitian ini bertujuan untuk mempelajari beberapa aspek botani dari tumbuhan Amorphophallus paeoniifolius meliputi anatomi, ekologi (pengukuran faktor lingkungan abiotik, biotik, sosial ekonomi masyarakat) serta  morfologi. Pengamatan faktor lingkungan biotik  dan pengambilan sampel dilakukan di dua lokasi dengan menggunakan 5 plot pada tiap lokasi untuk tingkat pohon, sapling dan anakan, serta pengamatan jenis fauna. Penelitian deskriptif meliputi identifikasi jenis Amorphophallus, morfologi dan anatomi, dilakukan di Herbarium Celebense dan Laboratorium Bioteknologi. Hasil pengamatan anatomi menunjukkan adanya dua tipe stomata berbeda pada daun dan bunga, serta pigmen warna bunga yang terdiri dari antosianin, xantofil dan klorofil. Pohon yang dominan di lokasi penelitian adalah  Cocos nucifera  dan Lannea grandis.  Jenis fauna teridentifikasi adalah burung Pignonotus aurigaster dan serangga Scarabaeidae (Onthophagus sp) yang berperan penting dalam Amorphophallus yaitu sebagai penyebar biji dan polinator. Amorphophallus termasuk famili Araceae memiliki daun lengkap, majemuk dan batang semu warna hijau dengan totol putih. Merupakan modifikasi batang (umbi). Bunga majemuk tipe tongkol (spadix), dengan bunga jantan dan betina yang bersifat protogeni, serta mengeluarkan bau khas.
STUDIES ON THE ARACEAE OF THE LESSER SUNDA ISLANDS II: NEW RECORD FOR SCINDAPSUS HEDERACEUS MIQ. IN BALI Erlinawati, Ina; Asih, Ni Putu Sri; Kuniawan, Agung; Yuzammi, Yuzammi
REINWARDTIA Vol 18, No 2 (2019): Vol.18 No.2
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/reinwardtia.v18i1.3702

Abstract

ERLINAWATI, I., ASIH, N. P. S., KURNIAWAN, A. & YUZAMMI. 2019. Studies on the Araceae of the Lesser Sunda Islands II: New record for Scindapsus hederaceus Miq. in Bali. Reinwardtia 18(2): 51?64. ? The native Araceae of the Lesser Sunda Islands consists of 19 genera and 33 species, of which Scindapsus hederaceus Miq. is newly reported for Bali. This species distributed from Indo-China to West and Central Malesia. Formerly, in Indonesia the species has been found in Sumatra, Java and Borneo. Short descriptions of all species found in the Lesser Sunda Islands and a key to the genera are provided.    
The Peculiar Petiole Calluses Growth of Amorphophallus titanum (Becc.) Becc. Ex Arcang and Its Implications for Ex Situ Conservation Efforts Yuzammi, Yuzammi; Tyas, Kartika Ning; Handayani, Tri
BIOTROPIA Vol. 25 No. 1 (2018): BIOTROPIA Vol. 25 No. 1 April 2018
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (10100.681 KB) | DOI: 10.11598/btb.2018.25.1.706

Abstract

Amorphophallus titanum is a plant species endemic to Sumatera. Land degradation and illegal capture of hornbills (a distributor of A. titanum seeds) is leading to potential extinction of A. titanum in the wild. In order to conserve the species and save it from extinction, there is an urgent need to develop methods to propagate it both in situ and ex situ. The aim of this research was to discover environmental factors triggering callus growth from petiole cuttings of A. titanum in its natural habitat in Sumatera and to determine the viability of callus pieces as a propagation material. A completely randomized design with a single factor, i.e., callus size, was employed on five callus replicates. Each replicate consisted of four callus samples. The treatments consisted of three callus piece sizes, i.e., 0.5 × 0.5 cm, 1 × 1 cm, and 2 × 2 cm. For each replicate, the following parameters of growth were assessed: the time of appearance of shoots; the shoot height when the first leaf fully opened; the petiole diameter; the diameter of the leaf lamina; and the number of young shoots. The results of our field observations showed that environmental factors such as temperature, humidity, and soil influence the formation of the callus in the wild. The size of the callus affected the shoot and root growth. The best result was obtained from callus 2 cm², which produced 2–3 shoots with an average height of 18.8 cm at the time of first fully opened leaf. The collection of petiole calluses of A. titanum that formed in its natural habitat is recommended instead of carrying the tuber. This ex vitro callus can be used as propagation material and then planted in botanic gardens as one of ex situ conservation efforts.
Co-Authors A.A. Ketut Agung Cahyawan W Asih, Ni Putu Sri Didi Usmadi, Didi Djauhar Asikin, Djauhar I Nengah Suwastika Ina Erlinawati Jintan Jintan Kartika Ning Tyas Kuniawan, Agung Ramadhanil Pitopang Tri Handayani