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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Biospecies BIOTROPIA - The Southeast Asian Journal of Tropical Biology Buletin Kebun Raya BERITA BIOLOGI JURNAL BIOLOGI INDONESIA Reinwardtia Jurnal Integritas Serasan Sekundang
Joko Ridho Witono
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Immunology & microbiology Social Sciences Veterinary

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KONDISI DAN STRATEGI KONSERVASI TUMBUHAN SUMATERA SELATAN DI KEBUN RAYA SRIWIJAYA, SUMATERA SELATAN Witono, Joko Ridho; Astuti, Inggit Puji; Zulkarnaen, Zulkarnaen
Jurnal Integritas Serasan Sekundang Vol 2 No 1 (2020): Jurnal Integritas Serasan Sekundang
Publisher : Badan Penelitian dan Pengembangan Daerah KabupatenMuara Enim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.64987/jiss.v2i1.1

Abstract

Upaya konservasi yang dilakukan oleh Pemerintah Republik Indonesia melalui penetapan kawasan konservasi in situ dan pembangunan kawasan konservasi ex situ perlu ditingkatkan untuk mencegah berkurangnya/ punahnya tumbuhan sebelum diketahui manfaatnya. Kebun raya merupakan salah satu bentuk konservasi tumbuhan ex situ yang telah mendunia, sehingga perlu memiliki strategi yang tepat dalam pelaksanaannya agar berkelanjutan. Penelitian ini bertujuan untuk mendeskripsikan kegiatan yang telah dilakukan dan merumuskan strategi yang harus dilakukan oleh Kebun Raya Sriwijaya dalam rangka konservasi tumbuhan lahan basah dan tumbuhan obat Sumatera. Dalam pelaksanaannya, penelitian menggunakan data primer dan sekunder yang dianalisis secara deskriptif mencakup sejarah, pembangunan infrastruktur, pengkayaan koleksi tumbuhan dan strategi pengelolaan Kebun Raya Sriwijaya. Hasil penelitian ini menunjukkan bahwa pengelolaan Kebun Raya Sriwijaya sudah berjalan cukup baik, namun perlu dioptimalkan secara berkelanjutan melalui strategi penguatan komitmen Pemerintah Provinsi Sumatera Selatan, penguatan fungsi pendidikan bagi pengunjung dan masyarakat di sekitar kebun, peningkatan kapasitas dan kompetensi SDM pengelola, penanaman koleksi tumbuhan dan tumbuhan estetika, peningkatan kualitas koleksi tumbuhan, pelibatan aktif masyarakat yang tinggal di sekitar kebun, fokus pada tema koleksi tumbuhan, terlibat secara aktif dalam pencapaian target GSPC, menjalin kerja sama yang lebih intensif dengan kebun raya lain, perguruan tinggi dan lembaga penelitian, serta menjalin komunikasi dan kerja sama yang lebih intensif dengan LIPI sebagai pembina dan pengawas teknis pembangunan Kebun Raya Sriwijaya.
Ketahanan 25 Genotipe Tomat (Solanum lycopersicum Mill.) terhadap Pecah Buah dan Korelasinya dengan Karakter-karakter Lain Wahyuni, Sri; Yunianti, Rahmi; Syukur, Muhamad; Witono, Joko Ridho; Aisyah, Syarifah Iis
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 42 No. 3 (2014): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (418.274 KB) | DOI: 10.24831/jai.v42i3.9166

Abstract

ABSTRACTFruit cracking is one of the major constraints in tomato production in lowland areas. This reduces fruit quality and quantity both as freshmarket and processed fruits. The objective of this study was to determine the resistance of 25 tomato genotypes to fruit cracking, correlation to others characters and their genetic similarity. The experiment was conducted from April until August 2012 at Leuwikopo Field Station, Bogor Agricultural University. A randomized complete block design was used with three replications. Fruit crack index was used to evaluate tomato fruit crack resistance. Correlation and impacts of variables were analyzed by path analysis. The genetic similarity was analyzed by clustering analysis. Result of resistance evaluation showed that fruit crack index of 25 tomato genotypes ranged from 0.00 to 20.58. Fruit crack index was directly related to percentage of  fruit crack weight per plant, percentage of number of fruit crack per plant and total soluble solids. Cluster analysis showed that the genotypes could be clustered into four groups.Keywords: clustering analysis, genetic diversity, path analysis
POPULATION STRUCTURE, DISPERSION PATTERN AND SEEDLING GROWTH OF GEWANG PALM (Corypha utan Lam.) IN TIMOR ISLAND, INDONESIA Kusuma, Yayan Wahyu Candra; Witono, Joko Ridho
BIOTROPIA Vol. 27 No. 1 (2020): BIOTROPIA Vol. 27 No. 1 April 2020
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (75.895 KB) | DOI: 10.11598/btb.2020.27.1.999

Abstract

Food insecurity has been reported to be the top most concern in East Nusa Tenggara (Timor Island) compared to that in other provinces in Indonesia. The use of local species as food sources is one possible arm in the fight against food insecurity. Gewang (Corypha utan Lam.) is a palm species which produces starch similar to the true sago palm (Metroxylon sagu). Although it is important to promote the species as a starch crop, information on its current population and seedling growth performance is still lacking. Hence, a one-hectare plot was surveyed and an experimental plot was established for population and regeneration analyses. In the 1 ha plot there were 31 productive trees, 2 post productive trees, 63 immature trees and 2,211 seedlings. The dispersion of the species followed the clumped pattern for immature trees and seedlings, but shifted to random pattern at maturity or productive stage. The seedling survival was stable when weeded, but dropped to 50% when un-weeded. However, in spite of its stem extraction for starch consumption, the population of C. utan in East Nusa Tenggara was stable. This indicated that C. utan in East Nusa Tenggara is a potential alternative food source to help build food security in Indonesia especially in dry lands like Timor Island and its adjacent regions.
Synthesis of Bucephalandra Schott (Araceae: Schismatoglottideae) studies in Kalimantan, Indonesia: checklist, key, and updated distribution maps Yuzammi; Erlinawati, Ina; Ni Putu Sri Asih; I Putu Gede P. Damayanto; Lulut D. Sulistyaningsih; Marlina Ardiyani; Himmah Rustiami; Joko Ridho Witono; Alex Sumadijaya; Ary Prihardhyanto Keim; Rayhanissa
Reinwardtia Vol. 24 No. 2 (2025): Reinwardtia
Publisher : BRIN Publishing (Penerbit BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/reinwardtia.2025.598

Abstract

YUZAMMI, ERLINAWATI, I., ASIH, N. P. S., DAMAYANTO, I. P. G. P., SUMADIJAYA, A., SULISTYANING-SIH, L. D., ARDIYANI, M., RUSTIAMI, H., WITONO, J. R., KEIM, A. P. & RAYHANNISA. 2025. Synthesis of Bucephalandra Schott (Araceae: Schismatoglottideae) studies in Kalimantan, Indonesia: checklist, key, and updated distribution maps. Reinwardtia 24(2): 185‒198. — Bucephalandra, a member of the Araceae family, is an endemic rheophyte genus of Borneo. The majority (26 out of the 32 species) of this genus, are found in Indonesian Borneo (Kalimantan). Bucephalandra oblanceolata (M.Hotta) S.Y.Wong & P.C.Boyce, previously known from Brunei and Sarawak, has been identified in Kalimantan. This study presents a comprehensive overview of Bucephalandra in Kali-mantan, accompanied by a detailed map and an identification key.
Co-Authors Ade Adriadi Agus Hikmat alex sumadijaya Ary PRIHARDHYANTO Keim Danang Wahyu Purnomo Didi Usmadi, Didi Farid Kuswantoro, Farid HIMMAH RUSTIAMI I PUTU GEDE P. DAMAYANTO Ina Erlinawati Inggit Puji Astuti Kondo, Katsuhiko LILIK BUDIPRASETYO Lulut D. Sulistyaningsih Mahat Magandhi Mar'atus, Saniyatun Marlina Ardiyani Marsanda, Firda Dwi Muhamad Syukur Mustaid Siregar Ni Putu Sri Asih R. Hendrian RAHMI YUNIANTI Rayhanissa Rondo, Katsuhiko Rosniati Apriani Risna Sri Wahyuni Syarifah Iis Aisyah Yayan Wahyu Candra Kusuma Yuzammi Zulkarnaen Zulkarnaen