Keanekaragaman Benalu di Ecopark, Cibinong Science Center-Botanic Gardens

AbstrakArea konservasi ex situ, Ecopark Cibinong Science Center-Botanic Gardens (CSC-BG), membutuhkan strategi pemeliharaan tanaman koleksi yang tepat untuk mendukung kesehatan dan keberlanjutan koleksinya. Serangan benalu atau tumbuhan parasit tidak hanya dapat merusak estetika, namun juga menghambat pertumbuhan dan perkembangan, bahkan membunuh tanaman koleksi. Penelitian ini bertujuan untuk mengetahui keanekaragaman jenis benalu dan distribusi spasial dari sebaran benalu di Ecopark CSC-BG. Pengumpulan spesimen dan data, meliputi jenis dan jumlah benalu, jenis dan kondisi inang, habitat menggunakan metode jelajah di seluruh area ini. Ditemukan empat jenis benalu dari suku Lorantaceae, yaitu Dendrophthoe pentandra (L.) Miq., Scurrula atropurpurea (Blume) Danser, Macrosolen cochinchinensis (Lour.) Tiegh., dan Dendrophthoe sp. Benalu tersebut tersebar di bioregion Blok 1, Jawa-Bali, Kalimantan, Sumatra, dan Papua. Beberapa faktor ekofisiologi yang disarankan untuk diperhatikan dalam distribusi benalu adalah tinggi inang, ekspos cahaya pada tajuk bagian atas inang, kepadatan tanaman koleksi, keterbukaan atau ekspos cahaya matahari pada habitat. Indeks keanekaragaman (H’) dan indeks kemerataan (E’) benalu yang ditemukan menunjukkan H’ = 1,29 dan E’ = 0,93. Hasil analisis pola spasial, keberadaan benalu relatif merata di seluruh bagian Ecopark CSC-BG, dengan keragaman jenis tertinggi berada di bioregion Jawa-Bali, Sumatra, dan Kalimantan. Kesimpulan penelitian ini 4 jenis benalu yang ditemukan di Ecopark CSC-BG dengan nilai indeks keanekaragaman jenis benalu tergolong sedang dengan pola sebaran merata.AbstractThe relevant information of existing mistletoes or parasitic plants in Ecopark-Cibinong Science Center & Botanic Gardens is needed to support the plant collection maintenance strategy. The attack of mistletoes does not only inflict the aesthetic values of the collection but also inhibits the growth and possibly kills the whole plant. This research aimed to know the mistletoes species diversity and spatial distribution in the garden. The exploration method was used to collect specimens and data, included the species and number of mistletoes, the host and its condition, habitat and location. Four species of Loranthaceae attacked the plant collection in bioregion Blok 1, Jawa-Bali, Sumatra dan Kalimantan. They were Dendrophthoe pentandra (L.) Miq., Scurrula atropurpurea (Blume) Danser, Macrosolen cochinchinensis (Lour.) Tiegh. and Dendrophthoe sp.. Some of the recommended ecophysiological factors to consider in the distribution of mistletoes in Ecopark, CSC-BG were host height, light exposure to the upper canopy of the host, plant collection density, openness, or exposure to sunlight in the habitat. The diversity index (H ') and evenness index (E') of mistletoes found in Ecopark CSC-BG were 1.29 and 0.93, respectively. Based on the results of spatial pattern analysis, the presence of mistletoes was relatively evenly distributed throughout the garden, with the highest species diversity found in the Java-Bali, Sumatra, and Kalimantan Bioregions. This study concludes that there were 4 species of mistletoes found in Ecopark CSC-BG with a moderate diversity index and an even distribution pattern

Decay Tree Detection in Bogor Botanic Gardens Collection Using Sonic Tomograph Technology

Bogor Botanic Gardens is an ex-situ plant conservation area in Indonesia. Since BBG is 103 years old, many collections are 100 years old or older. These antique collections may sustain damage, such as broken or collapsing, endangering visitors and employees. As a result, monitoring tree health at BBG is a critical task. According to the tree health monitoring data, 73 of 244 trees were further checked using the PiCUS Sonic Tomograph. Trees from the Fabaceae (31%) and Myrtaceae (10%) families were the most frequently checked. Walnuts trees from the Burseraceae family had the most specimens (47,94%). The PST effectively provides an immediate picture of the stem condition by calculating solid and decaying wood percentage values

Decay Tree Detection in Bogor Botanic Gardens Collection Using Sonic Tomograph Technology

Bogor Botanic Gardens is an ex-situ plant conservation area in Indonesia. Since BBG is 103 years old, many collections are 100 years old or older. These antique collections may sustain damage, such as broken or collapsing, endangering visitors and employees. As a result, monitoring tree health at BBG is a critical task. According to the tree health monitoring data, 73 of 244 trees were further checked using the PiCUS Sonic Tomograph. Trees from the Fabaceae (31%) and Myrtaceae (10%) families were the most frequently checked. Walnuts trees from the Burseraceae family had the most specimens (47,94%). The PST effectively provides an immediate picture of the stem condition by calculating solid and decaying wood percentage values

VARIASI GENETIK TANAMAN JERUK SIAM (Citrus nobilis Lour. Var. microcarpa Hassk) DI SENTRA BUDIDAYA GUNUANG OMEH KENAGARIAN KOTO TINGGI BERDASARKAN ANALISIS RANDOM AMPLIFIED POLYMORPHIC DNA (RAPD)

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GENETIC VARIATION IN CITRUS CULTIVAR SIAM (CITRUS NOBILIS LOUR. VAR MICROCARPA HASSK) FROM GUNUANG OMEH PRODUCTION CENTRE, WEST SUMATERA, INDONESIA

GENETIC VARIATION IN CITRUS CULTIVAR SIAM (CITRUS NOBILIS LOUR. VAR MICROCARPA HASSK) FROM GUNUANG OMEH PRODUCTION CENTRE, WEST SUMATERA, INDONESI

INVASIVENESS IDENTIFICATION: A STUDY CASE FROM LANTANA

Invasion by invasive species represents one of the greatest threats to biodiversity worldwide, causing degradation and loss of habitat. Among them, one species belonged to the Verbenaceae family, namely Lantana camara, which includes 100 of the world’s worst invasive species. Distinguishing invasive from non-invasive species based on morphology alone is often difficult for plants in a vegetative stage, especially in Lantana, where they have complex morphological characters. In this regard, DNA barcoding may become a good alternative. This study aimed to select and provide a DNA barcode region that capable of distinguishing the invasive and non-invasive Lantana. Four DNA Barcode markers available in the sequence database (NCBI and BOLD), namely matK, rbcL, psba-trnh, and ITS2, were used to identify the invasiveness of various Lantana. A total of 132 data sequences from 17 species of Lantana were collected. The sequences were aligned and constructed into a dendrogram using MEGA X through the Neighbor-Joining method. This study shows that it is possible to distinguish Lantana camara from a series of closely related congeners by plastid base gene (matk and rbcl). The constructed phylogeny tree shows that invasive species Lantana camara was in a different clade with non-invasive Lantana

Perkecambahan asimbiotik biji dan perkembangan planlet Dendrobium spectabile (Blume) Miq.

Dendrobium spectabile (Blume) Miq. is one of Papuan orchids that is of economic value and threatened. At present, the optimal protocol for asymbiotic seed germination and planlet development of D. spectabile is not yet available. This research aimed to develop an optimal and comprehensive protocol for in vitro culture of D. spectabile to support the conservation and reintroduction of this species. The experiment was conducted using a completely random design, including seed sowing, protocorm subculture (subculture 1), plantlet subculture (subculture 2), and plantlet acclimatization. The highest germination rate at 3 MAS (months after sowing) was found in modified Knudson's C (92.59%). The first subculture at 4 MAP (months after planting) showed that the highest leaf and root growths were found in modified Vacin and Went (4.12 and 2.13, respectively). The second subculture at 6 MAP showed that the highest leaf growth was found in full strength of Murashige and Skoog supplemented with 100 g/l banana homogenate (5.49), while the highest number of roots and average root extension were found in half strength of Vacin and Went supplemented with 100 g/l banana homogenate (7.05 and 0.47 cm, respectively). The plantlets were best acclimatized in media consisting of tree fern fibre and sphagnum moss (2:1).Dendrobium spectabile (Blume) Miq. merupakan salah satu jenis anggrek terancam punah dari Papua yang memiliki nilai ekonomi. Saat ini, protokol optimal untuk perkecambahan biji D. spectabile secara asimbiotik dan pengembangan planletnya belum tersedia. Penelitian ini bertujuan untuk mendapatkan protokol kultur in vitro yang optimal dan komprehensif dalam rangka mendukung upaya konservasi dan reintroduksi jenis ini. Penelitian dilakukan dengan menggunakan rancangan acak lengkap, meliputi penyemaian biji, subkultur protokorm (subkultur 1), subkultur planlet (subkultur 2), dan aklimatisasi planlet. Tingkat perkecambahan biji D. spectabile tertinggi pada 3 BSS (bulan setelah semai) terdapat pada media modifikasi Knudson's C (92,59%). Pada subkultur pertama, pertumbuhan daun dan akar tertinggi pada 4 BST (bulan setelah tanam) terdapat pada media modifikasi Vacin dan Went (4,12 dan 2,13). Sedangkan pada subkultur kedua, pertumbuhan daun tertinggi pada 6 BST terdapat pada media Murashige dan Skoog dengan penambahan 100 g/l pisang (5,49), dan jumlah akar tertinggi serta penambahan panjang akar rata-rata tertinggi terdapat pada media Vacin dan Went setengah konsentrasi dengan penambahan 100 g/l pisang (7,05 dan 0,47 cm). Planlet teraklimatisasi dengan baik pada media campuran pakis cacah dan lumut sphagnum (2:1)