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All Journal Journal of Tropical Biodiversity and Biotechnology REINWARDTIA BERITA BIOLOGI Biosaintifika: Journal of Biology & Biology Education Imajiner: Jurnal Matematika dan Pendidikan Matematika Journal Mathematics Education Sigma [JMES]
DIAN LATIFAH, DIAN
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Mathematics Other

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A PHYSIOLOGICAL APPROACH TO CONSERVATION OF FOUR PALM SPECIES: ARENGA AUSTRALASICA, CALAMUS AUSTRALIS, HYDRI- ASTELE WENDLANDIANA AND LICUALA RAMSAYI Latifah, Dian; Congdon, Robert A.; Holtum, Joseph A.
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 | Full PDF (893.785 KB) | DOI: 10.14203/reinwardtia.v14i1.421

Abstract

Palms (Arecaceae) are an important component of many tropical rainforests. Many have also been cultivated widely for agricultural commodities with high economic value. They are also important components in rehabilitation of disturbed or marginal lands. Knowledge and application of germination strategies are essential in the cultivation of palms. Many species have seeds that do not germinate readily, even when light conditions are favourable. This research determined the effects of seed coats, light and temperature on germination of Arenga australasica (H. Wendl. & Drude) S. T. Blake ex H. E. Moore, Calamus australis Mart., Hydriastele wendlandiana (F. Muell.) H. Wendl. & Drude and Licuala ramsayi var. tuckeri Barford & Dowe. We examined physical treatments to promote germination or break dormancy, as well as different light and temperature conditions. The results showed that the hard seed coats of the four species slowed imbibition. Scarified seeds germinated best for A. australasica, C. australis and L. ramsayi. The germination of all seeds was inhibited by far red light. The red light requirement suggests that these species prefer to colonise open areas. This implies that dispersal agents, canopy gaps and forest margins may play important roles in promoting regeneration as well as conservation of these palm species.
REGENERATION STRATEGIES OF PALMS (ARECACEAE) IN RESPONSE TO CYCLONIC DISTURBANCES LATIFAH, DIAN; CONGDON, ROBERT A.; HOLTUM, JOSEPH A.
REINWARDTIA Vol 15, No 1 (2016): Vol.15 No.1
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7967.074 KB) | DOI: 10.14203/reinwardtia.v15i1.2442

Abstract

LATIFAH, D., CONGDON, R. A. & HOLTUM, J. A. 2016. Regeneration strategies of palms (Arecaceae) in response to cyclonic disturbances. Reinwardtia 15 (1): 43 ? 59. — Tropical cyclones may act as important ecological drivers in northern Australia including north Queensland, as several cyclones impact this region each year between November and May. Extensive research has been conducted to investigate how regeneration of rainforest plant communities respond to frequent cyclonic disturbances. However, there have been few such studies on palms although they are important components of many rainforests. This research aimed to investigate the effects of canopy gaps following cyclonic disturbance (case study: Cyclone Larry) on  regeneration of Arenga australasica (H. Wendl. & Drude) S. T. Blake ex H. E. Moore, Calamus australis Mart., C. moti F. M. Bailey, Hydriastele wendlandiana (F. Muell.) H. Wendl. & Drude and Licuala ramsayi var. ramsayi (F. Muell.) H. Wendl. & Drude. The field research was carried out at five sites in three areas located in northern Queensland: Tam O’Shanter/Djiru National Park, Clump Mountain National Park and Kurrimine Beach Conservation Park. Observations were made of recruitment, growth rate, leaf turnover and life history. We found that responses of palm regeneration following cyclonic disturbance varied among study sites; however, the recruitment of several species was favoured in gaps created by cyclones. The results also provide information on the various stages in the life cycle of the study palms.
GROWTH RESPONSES OF PALM SEEDLINGS TO DIFFERENT LIGHT INTENSITIES STIMULATING CANOPY GAPS WITH AN ECOPHYSIOLOGICAL APPROACH LATIFAH, DIAN; CONGDON, ROBERT A.; HOLTUM, JOSEPH A.
REINWARDTIA Vol 15, No 2 (2016): Vol.15 No.2
Publisher : Research Center for Biology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1453.106 KB) | DOI: 10.14203/reinwardtia.v15i2.2942

Abstract

LATIFAH, D., CONGDON, R. A. & HOLTUM, J. A. 2016. Growth responses of palm seedlings to different light intensities stimulating canopy gaps with an ecophysiological approach. Reinwardtia 15(2): 81 – 98. — Palms (Arecaceae) mainly grow in rainforests and many occur in disturbed areas like canopy gaps created by natural disturbances such as cyclones in Australia. Knowledge of seedling growth in different light intensities is essential to assist rainforest restoration in disturbed or marginal lands. The aim of this research was to investigate the effects of different light intensities on the seedling growth of Arenga australasica (H. Wendl. & Drude) S. T. Blake ex H. E. Moore, Calamus australis Mart., C. moti F. M. Bailey, Hydriastele wendlandiana (F. Muell.) H. Wendl. & Drude and Licuala ramsayi (F. Muell.) H. Wendl. & Drude. Seedling growth experiments (pot trials) were conducted in a glass house using shade cloth providing four different levels of shading: 59, 29, 17 and 6% sunlight. The growth rate, leaf turnover, leaf area, total chlorophyll, chlorophyll a:b ratio, vigor, above-ground and below-ground biomass and growth indices (LAR, SLA and LWR) of palm seedlings were measured. As a result of these measurements the relative shade tolerance of the five species was determined. The seedlings of Arenga australasica were classified as intermediate-shade intolerant species. Hydriastele wendlandiana seedlings were shade-intolerant. Calamus australis and C. moti seedlings are intermediate-shade intolerant. Licuala ramsayi seedlings were found to be a shade-tolerant.
Seed Exploration for Seed Banking Purpose in Cibodas Botanical Garden Zuhri, Musyarofah; Latifah, Dian; Kurniawati, Fitri; Noviady, Ikhsan; Suhendri, Yudi
Biosaintifika: Journal of Biology & Biology Education Vol 11, No 1 (2019): April 2019
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (439.722 KB) | DOI: 10.15294/biosaintifika.v11i1.16425

Abstract

Due to contribution of Target 8 of the Global Strategy for Plant Conservation GSPC Botanic Gardens, Cibodas Seed Bank committed to increase its ex situ plant collection through seed banking. This research aimed to assess population and collect seeds from Cibodas remnant forests and its neighboring, Mt. Gede Pangrango National Park forest, for seed banking purpose. Thirty-two numbers of seeds belonging to fifteen families were collected. Two species were included in IUCN red list i.e. Saurauia cauliflora (vulnerable) and Magnolia blumei (least concern) and one species classified as endangered species by World Conservation Monitoring Unit (WCMC) i.e. Pinanga javana. Sixty-five percent population were possible to collect without affecting the availability of the seeds in the nature. Around a half of seeds were collected at natural dispersal stage to ensure the seed maturity. Ninety-one percent collected seeds were expected as orthodox seeds that can be stored in Cibodas Seed Bank and three species were recalcitrant and cannot be stored in Cibodas Seed Bank i.e. Calamus ciliaris, C. reinwardtii and Daemonorops rubra. Cut-test results showed 78% seed collected were full seeds, that were not infested, empty or immature seeds. This study provides information regarding the readiness of population for seed collection and species were collected and stored in Cibodas Seed Bank. 
HOW TO PREDICT THE BLOOMING OF THE GIANT CORPSE INFLORESCENCE Amorphophallus titanum (Becc.) Becc. ex Arcang [Prediksi Mekarnya Bunga Bangkai Raksasa Amorphophallus titanum (Becc.) Becc. ex Arcang] Latifah, Dian; Wawangningrum, Hary; Hartini, Sri; Munawaroh, Esti
BERITA BIOLOGI Vol 14, No 2 (2015)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1037.502 KB) | DOI: 10.14203/beritabiologi.v14i2.1815

Abstract

The giant corpse inflorescence (Amorphophallus titanum) is native to Indonesia. It is one of the flagships of The Center for Plant Conservation Bogor Botanic Gardens, Indonesian Institute of Sciences (LIPI) to raise public awareness for saving plants from extinction and caring the living environment. The blooming of the giant inflorescence attracts many visitors. Therefore, one of the research focuses of Amorphophallus titanum is how to predict the blooming-time in order to inform visitors earlier. The results of this study can be used as the basic information to predict the blooming of the inflorescences. Previous researchers had tried to predict the blooming based on firstly, the differential diagnostics of an inflorescence bud and leaf bud, and secondly, the growth pattern of the flowering bud from one individual sample only; whereas, our results suggested new findings. In this research, the prediction was examined from 2011-2012 on five individual samples planted in Bogor Botanic Gardens. We suggested that (1) the differential diagnostics of an inflorescence bud and leaf bud were not only based on the early bud shapes but also the growth rate, and (2) our results supported Lobin?s findings by providing a statistical formula for growth pattern of the flowering bud.
SEED GERMINATION OF THE CORPSE GIANT FLOWER Amorphophallus titanum (Becc.) Becc. Ex Arcang: THE INFLUENCE OF TESTA [Perkecambahan Biji Bunga Bangkai Raksasa Amorphophallus titanum (Becc.) Becc. ex Arcang: Pengaruh Testa] Latifah, Dian; Purwantoro, RS
BERITA BIOLOGI Vol 14, No 1 (2015)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (542.624 KB) | DOI: 10.14203/beritabiologi.v14i1.1861

Abstract

Amorphophallus titanum is famous as the gigantic inflorescense and economically prospective due to its 20% glucomannan contents.Various cultivation techniques including germination have been conducted due to the delay in the seed germination of Amorphophallus titanum. Previous studies revealed that A. titanum seeds has not produced faster and better germination rate.Therefore this research was aimed to test the following hypotheses: (1) Fruit pericarp and the pericarp inhibited the germination,(2) testa/seed coat inhibited germination, (3) GA3hormone promoted the germination rate.The germination pattern was also monitored. The experiments consisted of:Experiment 1: sowing the fruit with the seeds inside and Experiment 2 with two treatments: testa peeling and GA3 hormone treatments. The results of Experiment 1 showed that the fruit pericarp and the pericarp inhibited the germination for 124 days. Experiment 2 resulted in: (1) the delay of the germination for 7-35 days caused by the testa/seed coat, (2) GA3 hormone promoted the germination rate 2.19 coefficient of germination rate; and higher GA3 (1000 ppm) may enhance the seedling growth (reached the highest 23.6 ± 1.3).We also recorded developmental stages from the seed germination, first-leaf emergence and tuber development in series of photographs overtime during the experimental period.
Analisis Kemampuan Berpikir Kritis Matematis Siswa SMP Kelas IX ditinjau dari Gaya Belajar Latifah, Dian; Prayito, Muhammad; Rasiman, Rasiman
Imajiner: Jurnal Matematika dan Pendidikan Matematika Vol 6, No 2 (2024): Imajiner: Jurnal Matematika dan Pendidikan Matematika
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/imajiner.v6i2.13191

Abstract

Penelitian ini bertujuan untuk mengetahui kemampuan berpikir kritis siswa dalam menyelesaikan soal pada materi Persamaan Linier Satu Variabel ditinjau dari gaya belajar siswa. Penelitian ini merupakan penelitian deskriptif dengan pendekatan kualitatif. Pengambilan data dilakukan pada siswa kelas IX A SMP PGRI Semarang tahun ajaran 2021/2022. Teknik pengumpulan data yang digunakan  dalam penelitian ini yaitu angket gaya belajar, tes, wawancara, dan dilengkapi dengan dokumentasi sehingga semua kegiatan dapat terekam dengan baik. Teknik analisis data dalam penelitian ini yaitu reduksi data, penyajian data, dan penarikan kesimpulan. Teknik pemeriksaan keabsahan data dengan menggunakan triangulasi metode. Hasil penelitian ini menunjukkan bahwa: (1) Siswa dengan gaya belajar visual mampu memenuhi semua indikator berpikir kritis yaitu interpretasi, analisis, evaluasi, dan inferensi, (2) Siswa dengan gaya belajar auditorial mampu memenuhi tiga indikator berpikir kritis yaitu interpretasi, evaluasi, dan inferensi, (3) Siswa dengan gaya belajar kinestetik mampu memenuhi dua indikator berpikir kritis yaitu evaluasi dan inferensi.
ANALISIS KEMAMPUAN BERPIKIR KRITIS MATEMATIS SISWA SMK KELAS XI PADA MATERI KOMPOSISI FUNGSI DITINJAU DARI GAYA KOGNITIF Latifah, Dian; Hadiwiyono, Supandi; Sugiyono, Eko
Journal Mathematics Education Sigma [JMES] Vol 5, No 2 (2024): JOURNAL MATHEMATICS EDUCATION SIGMA
Publisher : Journal Mathematics Education Sigma [JMES]

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/jmes.v5i2.20785

Abstract

Penelitian ini bertujuan untuk mengetahui kemampuan berpikir kritis siswa SMK Kelas XI pada materi Komposisi Fungsi ditinjau dari gaya kognitif. Penelitian ini merupakan penelitian deskriptif dengan pendekatan kualitatif. Pengambilan data dilakukan pada siswa kelas XI Teknik Kelistrikan SMK Negeri 4 Semarang tahun ajaran 2023/2024. Teknik pengumpulan data yang digunakan dalam penelitian ini yaitu tes, wawancara, dan dilengkapi dengan dokumentasi sehingga semua kegiatan dapat terekam dengan baik. Penelitian ini menggunakan triangulasi metode. Triangulasi metode dilakukan dengan membandingkan data hasil pengamatan, tes tertulis dan MFFT (Matching Familiar Figure Test)) dengan data hasil wawancara dan hasil tersebut akan dianalisis berdasarkan indikator yang telah ditentukan.MFFT (Matching Familiar Figure Test) digunakan untuk mengidentifikasi golongan gaya kognitif siswa secara impulsif atau reflektif. Hasil dari penelitian ini menyatakan bahwa kemampuan berpikir kritis pada siswa dengan gaya kognitif impulsif berpikir kritis rendah hanya mampu memenuhi dua indikator berpikir kritis yaitu interpretasi analisis, siswa dengan gaya kognitif impulsif berpikir kritis tinggi mampu memenuhi kelima indikator berpikir kritis yaitu interpretasi, analisis, strategi, inferensi dan evaluasi. Sedangkan siswa dengan gaya kognitif reflektif berpikir kritis rendah hanya mampu memenuhi satu indikator berpikir kritis yaitu analisis, siswa dengan gaya kognitif reflektif berpikir kritis tinggi mampu memenuhi kelima indikator berpikir kritis yaitu interpretasi, analisis, strategi, inferensi dan evaluasi.
Praxelis (Asteraceae: Eupatorieae), A Newly Naturalised Genus for Kalimantan and Sumatra, Indonesia Hariri, Muhammad Rifqi; Irsyam, Arifin Surya Dwipa; Lestari, Ria Windi; Peniwidiyanti, Peniwidiyanti; Rahmaningtiyas, Lutfi; Zulkarnaen, Rizmoon Nurul; Widjaya, Aulia Hasan; Saripudin, Saripudin; Latifah, Dian; Yuliyanto, Ponco; Budianti, Noviana; Suhaya, Yoyo; Rosleine, Dian; Sulistyawati, Endah
Journal of Tropical Biodiversity and Biotechnology Vol 9, No 4 (2024): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jtbb.90595

Abstract

The southern American genus Praxelis Cass. has 18 species. In Singapore and Indonesia, notably Java, P. clematidea R.M.King & H.Rob. has naturalised. The first record in Indonesia was in Bogor in 2018, although it is unverified elsewhere. Praxelis clematidea was found in Bangka, Belitung, Jambi, Lampung, and Palangka Raya during our exploratory field research in 2020–2023. The naturalised populations proliferate in roadsides, ditches, open spaces, and disturbed areas.  It thrives in a small swampy peat environment in Palangka Raya. Praxelis clematidea has been found outside Java, suggesting it could become an invasive alien species in Kalimantan and Sumatra.
Co-Authors Budianti, Noviana Dian Rosleine, Dian Esti Munawaroh Fitri Kurniawati Hadiwiyono, Supandi Irsyam, Arifin Surya Dwipa JOSEPH A. HOLTUM, JOSEPH A. Muhammad Prayito Muhammad Rifqi Hariri Musyarofah Zuhri Noviady, Ikhsan Peniwidiyanti, Peniwidiyanti Purwantoro, RS Rahmaningtiyas, Lutfi Rasiman Rasiman Ria Windi Lestari ROBERT A. CONGDON, ROBERT A. Saripudin Saripudin Sri Hartini Sugiyono, Eko Suhaya, Yoyo Suhendri, Yudi Sulistyawati, Endah Wawangningrum, Hary Widjaya, Aulia Hasan Yuliyanto, Ponco Zulkarnaen, Rizmoon Nurul