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All Journal Jurnal Bios Logos Bioma : Berkala Ilmiah Biologi BIOTROPIA - The Southeast Asian Journal of Tropical Biology BIO-EDU: Jurnal Pendidikan Biologi
RETNO PENI SANCAYANINGSIH
Staf Pengajar Fakultas Biologi UGM
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Medicine & Pharmacology Social Sciences Veterinary

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Masa Inkubasi Gejala Penyakit Hawar Daun Tanaman Kentang yang Diinduksi Ketahanannya oleh Jamur Antagonis Trichoderma viride Purwantisari, Susiana; Priyatmojo, Achmadi; Sancayaningsih, Retno Peni; Kasiamdari, Rina Sri
Bioma : Berkala Ilmiah Biologi Vol. 18, No.1, Tahun 2016
Publisher : Departemen Biologi, Fakultas Sains dan Matematika, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (62.469 KB) | DOI: 10.14710/bioma.18.2.41-47

Abstract

Late blight disease caused by Phytophthora infestans, is probably the single most important disease of potatoes worldwide. Infected plants were quickly killed and were difficult for replanting, causing significant losses for the growers. Various control methods were examined including the use of biocontrol agents of Trichoderma spp.  The biocontrol potential of Trichoderma viride against potato late blight pathogen, Phytophthora infestans, were studied  under greenhouse conditions. The research objective was to determine the ability of biocontrol agents Trichoderma viride to delay late blight disease incidence on potato plants in the field. The in vivo experiment was carried out at potato land area located at BALITSA in Cikole Sub District, Lembang District and Bandung Regency. Completely Randomized Design was used with six treatment and five replicates. The treatment tested consist of control (without pathogen fungal and antagonists fungus application too), control (with pathogen fungal application and without antagonist fungal application), chemical fungicide application, antagonist fungal application 2 weeks before planting, application 1 week after planting and both application 2 weeks before and 1 week after planting. Result of the research showed that application of antagonists fungal could delay disease intensity until 14 days. These antagonist could be used as biological agents initials to control leaf blight disease. Key words: Biological control, Potato late blight, Phytophthora infestans, Trichoderma viride
Evaporasi dan Transpirasi Tiga Spesies Dominan dalam Konservasi Air di Daerah Tangkapan Air (DTA) Mata Air Geger Kabupaten Bantul Yogyakarta Binsasi, Remigius; Sancayaningsih, Retno Peni; Murti, Sigit Heru
BIO-EDU: Jurnal Pendidikan Biologi Vol 1 No 3 (2016): Jurnal BIO-EDU Volume 1 Nomor 3 Tahun 2016
Publisher : Jurusan Pendidikan Biologi, Fakultas Ilmu Pendidikan, Universitas Timor

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Abstract

Kekayaan sumber air di Indonesia sangat melimpah, tetapi ketersediaan air sangat bervariasi berdasarkan dimensi ruang dan waktu. Adanya perubahan iklim, sistem penggunaan lahan yang buruk, kerusakan ekosistem di Daerah Tangkapan Air (DTA), serta kebutuhan konsumsi air terus meningkat akan mengakibatkan terjadinya beberapa tempat mengalami krisis air. Tujuan penelitian ini adalah untuk mengetahui peranan ekofisiologis dalam mengkonservasi air dalam proses evaporasi, transpirasi, dan evapotranspirasi. Penelitian ini dilaksanakan pada bulan November 2015-April 2016 di DTA mata air Geger Kabupaten Bantul Yogyakarta. Metode pengambilan sampel adalah metode kuadrat plot secara acak. Penentuan DTA dan pembagian kelas vegetasi menggunakan citra Quikbird dan GIS. Pengujian Evaporasi, Transpirasi dan Evapotranspirasi dilaksanakan di Green house Fisiologi Tumbuhan, Fakultas Biologi Universitas Gadjah Mada. Hasil pengujian evaporasi untuk ketiga perlakuan yaitu (Kontrol, P40%, dan P 80%) pada tiga spesies dominan yaitu Gnetum gnemon, L. Swietania mahagoni, (L.) Jacq dan Tectona grandis, L. Hal ini menunjukkan bahwa spesies Tectona grandis, L. memiliki tingkat penguapan yang tinggi, sedangkan hasil pengukuran laju transpirasi berdasarkan analisis regresi menggunakan Licor dan Kobalt klorid menunjukkan koorelasi negatif artinya semakin tinggi nilai laju transpirasi pada Licor maka akan semakin rendah nilai laju transpirasi pada kobalt klorida.
Sasi Katang Balanga:Upaya Penangkapan Berkelanjutan Scylla serrata (Forskal,1775) Di Desa Leksula, Buru Selatan, Maluku Talakua, Matheos; Sancayaningsih, Retno Peni; Joko, Tri
JURNAL BIOS LOGOS Vol 10, No 2 (2020): JURNAL BIOS LOGOS
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jbl.10.2.2020.29510

Abstract

ABSTRAKKatang balanga (Scylla serrata) hidup pada dua kawasan mangrove di desa Leksula yaitu Teslatu-Tanjung Kabat dan Kamite Salehen. Pemerintah Desa Leksula menerapkan sasi katang balanga pada kawasan mangrove Teslatu-Tanjung Kabat.  Sasi katang balanga adalah larangan menangkap katang balanga pada  waktu tertentu dan cara untuk menghindari  penangkapan katang balanga diluar waktu  yang ditentukan. Penelitian ini bertujuan membandingkan populasi katang balanga di kawasan mangrove Teslatu-Tanjung Kabat dan Kamite Salehen dan mengetahui  dampak sasi katang balanga bagi kehidupan katang balanga di Desa Leksula. Pengamatan katang balanga dan pencacahan individu per kelamin  dilakukan menggunakan alat tangkap bubu, pada periode bulan terang dan gelap. Kelimpahan dan estimasi hasil penangkapan katang balanga dibandingkan menggunakan uji-t. Penerapan sasi katang balanga di kawasan mangrove Teslatu-Tanjung Kabat memberikan hasil tangkapan lebih baik. Namun demikian, perlu dilengkapi dengan sejumlah aturan untuk keberlanjutan populasi katang balanga.Kata kunci: Berkelanjutan; Desa Leksula; Katang balanga; Sasi,Scylla serrata ABSTRACTKatang Balanga or mud crabs (Scylla serrata) live in two mangrove areas in Leksula, Teslatu-Tanjung Kabat and Kamite Salehen. Local authority in Leksula applies Sasi Katang Balanga to the Teslatu-Tanjung Kabat mangrove area. This research aims to compare the population of mud crabs in Teslatu-Tanjung Kabat and Kamite Salehen mangrove area and to know the impact of sasi on mud crabs population in Leksula. The observation of mud crabs and the enumeration of the sex of each individual was carried out by using guiding barriers or traps in the full and the new moon. The estimation of mud crabs capture results were compared using t-tests. The use of sasi in the Teslatu-Tanjung Kabat mangrove area shows a better catch results. However, it still needs to be equipped with regulations for the sustainability of mud crabs population.Keywords: Sustainability; Leksula; Katang balanga; Sasi; Scylla serrata
THE GROWTH STRATEGIES ANALYSIS OF TEN WOODY PLANT SPECIES FOR EFFECTIVE REVEGETATION Rindyastuti, Ridesti; Sancayaningsih, Retno Peni
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 | DOI: 10.11598/btb.2018.25.1.705

Abstract

The growth strategies of plant species reflect their ecological roles, as expressed through their adaptations to environmental conditions and competitive abilities. These strategies are essential for evaluating the effectiveness of revegetation efforts. However, growth strategies of plant species across different habitat types have not been fully investigated. This study aimed to examine the growth strategies of ten woody plant species naturalized from mangrove to lowland habitats in relation to their effectiveness in revegetation programs. Seedling growth was monitored for four months at the Purwodadi Botanic Garden–LIPI from October 2014 to February 2015. A completely randomized design with plant species as treatments and three replications was applied to evaluate relative growth rates (RGRs), their components, leaf nitrogen productivity, and overall growth strategies. The results showed that RGRs varied among the ten woody plant species. Pearson correlation analysis indicated that net assimilation rate (NAR) and two root-related ecological traits—nitrogen productivity and specific root length (SRL)—were strongly correlated with RGR. Heritiera littoralis, Diospyros discolor, Antidesma bunius, Schleichera oleosa, Madhuca longifolia, and Syzygium cumini exhibited high RGRs but low specific leaf area (SLA). Barringtonia asiatica showed relatively low RGR and SLA, whereas Dracontomelon dao exhibited high RGR and SLA. These findings indicate that most of the studied species, except D. dao, achieve high growth rates and competitive ability by developing fine root systems that enhance nutrient uptake. Most woody species were well adapted to dry lowland habitats, while D. dao showed greater potential to dominate the ecosystem. Furthermore, D. discolor and S. oleosa are highly recommended for revegetation of degraded tropical lowland areas.
Co-Authors Achmadi Priyatmojo Alanindra Saputra Ali Djamhuri Anak Agung Istri Sri Wiadnyani Atie, Abi Giusti Wohing Binsasi, Remigius ENDANG SUTARININGSIH SOETARTO Kusumadewi, Anindyasari Ridesti Rindyastuti Rina Sri Kasiamdari Sigit Heru Murti Susiana Purwantisari Talakua, Matheos