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PENINGKATAN PRODUKSI DAN PERBAIKAN UKURAN UMBI KENTANG HITAM (Plectranthus rotundifolius (Poir.) Spreng) MELALUI TEKNIK BUDIDAYA SEBAGAI UPAYA KONSERVASI Lestari, Peni; Utami, Ning Wikan; Setyowati, Ninik
Buletin Kebun Raya Vol 18, No 2 (2015): Buletin Kebun Raya Vol. 18 (2) July 2015
Publisher : Center for Plant Conservation Bogor Botanic Garden, Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar

Penurunan peranan suatu spesies dalam budaya masyarakat dapat menyebabkan kelangkaan bahkan kepunahan spesies tersebut. Seiring dengan program pemerintah untuk melakukan diversifikasi pangan, tanaman minor yang potensial sebagai sumber karbohidrat dapat dipopulerkan kembali dengan tujuan sebagai upaya konservasi tanaman tersebut. Terkait hal tersebut, kentang hitam (Plectranthus rotundifolius) dapat menjadi sumber pangan alternatif bagi masyarakat yang menempati daerah kering. Kentang hitam tidak hanya berperan sebagai sumber karbohidrat dengan indeks glikemik rendah, tetapi juga kaya vitamin dan sejumlah mineral penting. Informasi mengenai teknik budidaya menjadi hal penting yang perlu dipersiapkan dalam rangka pengembangannya. Penelitian ini dilakukan untuk menjawab pertanyaan mengenai teknik budidaya yang perlu dilakukan untuk meningkatkan kualitas hasil panen kentang hitam di pasaran. Penelitian dirancang berdasarkan Rancangan Acak Kelompok (RAK) dua faktor, yaitu aksesi dan teknik budidaya. Empat aksesi kentang hitam yang digunakan: Nganjuk, Sangian, klon 6G dan O3; dan empat jenis teknik budidaya: bumbun, pangkas, jerami, and pengangkatan tajuk) Setiap perlakuan terdiri dari empat ulangan, dengan tiga tanaman/ulangan. Pengamatan dilakukan pada parameter pertumbuhan dan hasil. Hasil penelitianÂ menunjukkan aksesi kentang hitam yang berbeda memerlukan teknik budidaya berbeda untuk meningkatkan hasil dan ukuran umbi. Penggunaan mulsa jerami padi pada budidaya kentang hitam dapat meningkatkan ukuran umbi kentang hitam di musim hujan.

ADAPTASI AKSESI KENTANG HITAM {Plectranthus rotundifolius (Poir.) Spreng} TERHADAP BERBAGAI INTENSITAS CAHAYA [Adaptation of Black Potatoes Accessions {Plectranthus rotundifolius (Poir.) Spreng} to Different Light Intensity] Utami, Ning Wikan; Wawo, Albert Husein
BERITA BIOLOGI Vol 11, No 3 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Light is one of limiting factors for plant growth, including black potatoes {Plectranthus rotundifolius (Poir.) Spreng}. This species is a potential carbohydrates source that has been utilized in some areas as an alternative food.Plant adaptation to light intensity is controlled by genetic potential and environment.The aim of this research is to obtain information about the light intensity that suitable for growing some black potato accessions and mutants. The study was compiled using Nested Randomized Complete Block Design.Five accessions (Solo, Sangian, Nganjuk, 6G and 25G) planted in 3 degrees of light intensity i.e. full light (N0), 70% (N1), 50% (N2) and 25% (N3).The results revealed that light greatly affect the growth and production of 5 accessions of black potatoes. Five accessions tend to tolerant for decreasing light intensity until 70%. Decreasing in growth and yield characters significantly occurred in 25% of light intensity than control. Solo and Sangian stable to 4 light intensity treatments.

PERKECAMBAHAN DAN VIGOR SEMAI Picrasma javanica Blume PADA BERB AGAI SUHU Sutarno, Hadi; Utami, Ning Wikan
BERITA BIOLOGI Vol 9, No 2 (2008)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

The successfull cultivation of useful plant largely depends on the quality of seeds, especially viability and germination vigor. Seed of Picrasma javanica Blume has potential use in the development of templates for new drugs, e. g. to treat malaria.For most species there is still little or no information about the suitable temperature regime for germination and seedling depelopment,therefore,it is interesting to study germination and seedling vigor of Picrasma javanica. The mature green were picked and cleaned before using for experiments.Germination was carried out in 24 compartments of a thermogradientbar apparatus.The temperature gradient extends from 4.8 to 41.6Â°C with 1.6Â°C steps from the first to the 24 th compartment. Twenty seeds were germinated in each compartment. Seeds were sown on 2 layers of filter-paper strips.Everyday for 77 days during germination the germinating seeds were recorded.For hilling experiments those seeds from compartment number 3 to number 13 of thermogradientbar apparatus were than removed to incubator 32Â°C for 28 days. On the seedling vigor, all germinating seed from incubator were removed for replanting in growth room with sand medium. The seedling establishment capacity in the different thermal regions can thus be identified. The results showed that seeds attained 50% germination after 43 days when placed at the gradientbar 22.4Â°C to 41.6Â°C with optimum temperature 36.8Â°C. A 28 days temperatuture pretreatment ranging gradually from 4.8Â°C up to 20.8Â°C has promoted germination significantly. Mechanism of pretreatment on low and high temperature was discussed.

POLA PERKECAMBAHAN RAMIN (Gonystylus bancanus) DAN EFEKTIFITAS KOMPOSISI MEDIA TANAM Rachman, Erlin; Utami, Ning Wikan
BERITA BIOLOGI Vol 8, No 1 (2006)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v8i1.814

A research work on seed germination of ramin (Gonystylus bancanus (Miq. Kurz) was conducted to study germination pattern and the effectivity of some composition of planting medias contained compost, cocopeat, organic manure, carbonic sekam and soil.The result showed that the seed germination pattern of ramin at least consist of six stages based on one or more morfological change or an organ formation occured. A growing period needed by the juvenil ramin to grow from a stage to next stage and the seedling plant heigh were taken as parameters to pursued the effectivity of planting media composition. Generally, media contained compost, cocopeat, carbonic sekam and organic manure were much more effective than medium contains soil only. Medium contained compost only was the most effective as planting media based on the two parameters. Cocopeat and carbonic sekam was also recommended as alternative planting media for seed germination and juvenil plant growth of ramin.

APLIKASI MEDIA TUMBUH DAN PERENDAMAN BUI PADA PERKECAMBAHAN JELUTUNG (Dyera costulata (Miq.) Hook, f) Utami, Ning Wikan; Widjaja, EA; Hidayat, Arief
BERITA BIOLOGI Vol 8, No 4 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Jelutung {Dyera costulata) is a potential plant species that has good an economic prospect,_especially for timber and latex production. The aim of this research is to know the effect of seed soaking treatments and growth media variation on seed germination of jelutung. The experiment was carried out in the Treub Laboratory, Research Centre for Biology-LIPI, Bogor, using a Complete Randomized Design with two main factors in three replications. The first factor is growth media i.e. peat + saw dush (1:2), peat + cocopeat (1:2), peat + zeolit (1:1), peat + saw dush (1:1), soil + peat (1:1) and soil (control). The second factor is soaking of seeds in fresh water for 0, 6, 12 or 18 hours prior to sowing. The results showed that there was no interaction effect of growth media and seed soaking treatments. However, both factors had individual significant effects on the germination of jelutung. Therefore it is recommended the best media for germination are peat + cocopeat (1:2), peat + zeolit (1:1), (or) peat +saw dush (1:2). These media had pH between 4 - 4.7. Seed soaking prior to sowing is not required for the germination of jelutung seed. In fact, the longer the time of seed soaked, the lower the germination of the seed. The highest germination percentage was 74%,which was recorded in treatment combination of mixed media peat + zeolit (1:1) without or with soaking of the seed in water for6 hours.

PERBANYAKAN ULIN (Eusideroxylon zwageri T.et.B) DENGAN BUI DAN SETEK Utami, Ning Wikan; Hoesen, Djadja Siti Hazar; Witjaksono, Witjaksono; Danu, Danu
BERITA BIOLOGI Vol 7, No 4 (2005)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

The ulin or so called vernacular name kayu besi (Eusideroxylon zwageri T.et.B.) is one of the the important timber in East Kalimantan (East Borneo).However, there are some problems in the regeneration of this species. The research on propagation of ulin was carried out in Treub Laboratory, Research Center for Biology. The research consist of two experiments The research consisted of two experiments.The first experiment seeds which was treated in order to stimulate the germination and the second experiment by treating the mixture between 1BA and vitamin C for stimulating root cutting.The best result of seeds germination was recorded 90%,which the seeds were treated by removing the whole seedcoat and then by exposing to the sunlight for 5 hours The seed itself began to germinate 7 weeks after sowing.Meanwhile, the control no germination et all until 28 weeks.The best result on cutting was indicated by treating with the combination of IBA 10 mg/1 and vitamin C 50 mg/1 which was achieved the highest rooting 100%,although without hormone treatment only resulted 33.3% rooting.

EFEKTIVITAS PUPUK ORGANIK DAN PUPUK N PADA PERTUMBUHAN BIBIT EBONI (Diospyros celebica Bakh.) Siregar, Hartutiningsih M; Utami, Ning Wikan
BERITA BIOLOGI Vol 6, No 2 (2002)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Eboni (Diospyros celebica Bakh.) merupakan tanaman keras dan termasuk jenis kayu mewah yang tumbuh alami di Sulawesi.Masalah yang dihadapi adalah pertumbuhan bibit yang lamban sehingga diperlukan percobaan tentang media pertumbuhan bibit yang sesuai. Bahan yang digunakan adalah bibit eboni berumur 6 bulan dengan pertumbuhan seragam.Percobaan I: Bibit ditanam pada polybag berkapasitas 5 kg yang masing-masing berisi campuran media tanam yakni A (tanah); B (tanah:kompos = 1:1); C (tanah:pupuk kandang = 1:1); D (tanah:kompos:pupuk kandang = 1:1:1); E (tanah:kompos:pupuk kandang = 2:1:1) dan F (tanah:kompos:pupuk kandang = 4:1:1).Percobaan II. Bibit ditanam pada polybag berkapasitas 5 kg tanah, dan dilakukan penambahan pupuk N yaitu urea dan ZA masing-masing 1,2, 3,4 dan 5 %rlpolybag. Pupuk diberikan dengan interval 2 minggu (2 kali pemupukan) dan 4 minggu (satu kali pemupukan).Hasil penelitian menunjukkan bahwa Percobaan I, bibit yang diperlakukan dengan media tanam berisi tanah:pupuk kandang = 1:1(C) memberikan hasil yang paling baik. Enam bulan setelah perlakuan, rata-rata tinggi tanaman 32,80 cm, jumlah daun 25 dan diameter batang 4,10 cm, sedangkan pada bibit yang tidak mengalami perlakuan (Percobaan I.A) hasilnya masing-masing adalah 22,60 cm, 19 dan 3,3 cm. Percobaan II, pemberian pupuk interval 2 minggu lebih baik daripada 4 minggu. Bibit lebih responsif terhadap pupuk urea. Perlakuan urea 3 gc/polybag memberikan hasil tertinggi yaitu tinggi tanaman mencapai 31,58 cm, jumlah daun 27 dan diameter batang 4,20 cm.

Respon Pertumbuhan Bibit Picrasma javanica Blume terhadap Intensitas Naungan dan Media Tanam Setyowati, Ninik; Utami, Ning Wikan
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 14, No 1 (2009): February 2009
Publisher : Universitas Atma Jaya Yogyakarta

Study on the growth response of Picrasma javanica Blume seedling to different shading intensities and medium was conducted at the Experimental Garden of Treub Laboratory, Research Centre for Biology, LIPI from June to December 2007. The research was arranged using Factorial in Completely Randomized Block Design with 2 factors and 5 replications. The first factor was shading intensities which were 0% (N0, without shading, average light intensities 39300 lux), 25% (N1, average light intensities 16430 lux), and 50% (N2, average light intensities 5867 lux), respectively and the second factor was medium (combinations of soil: manure:compost) with 6 levels were M1= 1:0:0, M2= 1:1:1, M3= 1:1:2, M4= 3:1:1, M5= 1:2:1, and M6= 2:1:1. The result showed that the N0 treatment (without shading) resulted the best growth response of Picrasma javanica Blume seedling, as showe in all parameters observed (plant height 27.11 cm; leaf number 15.57; diameter of trunk 4.32 mm; and root length of 15.97 cm, shoot dry weight of 1.762 g, root dry weight of 0.688 g and seedling quality index of 0.277). The growth media treatment of M5 (1-soil:2 manure:1 compost) showed the positive response on the growth of seedling better than other treatments and different with control (M1, soil media), with parameters were observed which was plant height 25.05 cm (M1= 19.10 cm); leaf number 16.53 (M1= 9.20); diameter of trunk 3.89 mm (M1= 2.76 mm); root lengh 15.23 cm (M1= 12.71 cm); shoot dry weight 1.58 g (M1= 0.663 g); root dry weight 0.51 g (M1= 0.221 g) and seedling quality index 0.220 (M1= 0.089). The combination treatment of N0 (without shading) and media M5 (1:2:1) gave the best response on the growth of Picrasma seedling (plant height 36.14 cm; leaf number 28.2; diameter of trunk 4.7 mm; and root length 16.7 cm, shoot dry weight 3 g and root dry weight 0.92 g).

Pertumbuhan Kaempferia rotunda L. dengan Perlakuan Variasi Jumlah Umbi Semu dan Penambahan Pupuk Organik Utami, Ning Wikan
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 10, No 1 (2005): February 2005
Publisher : Universitas Atma Jaya Yogyakarta

Kaempferia rotunda, usually called as temu putih is belonging into Zingiberaceae family.This plant has been used as traditional medicine for curing diarrhoe and disentry.Objective of the study was to determine the effect of pseudo tubers number and organicfertilizers on the productivity of K. rotunda. Research was conducted in TreubLaboratory, Research Centre for Biology LIPI, Bogor, from July 2002 until April 2003.The experiment was arranged in a factorial Randomized Block Design. The treatmentsconsisted of two factors, i.e the first factor were number of pseudo tubers (0, 2 and 4)and second factor were organic fertilizers (soil, goat manure and compost).The result of the exsperiment showed that both factors, i.e number of pseudo tubers andorganik fertilizers significantly affect productivity of K.rotunda. The effect of goatmanure more dominant than compost. The interaction of those two factors significantlyinfluenced number of leaves and fresh weight of rhizome. The best results was on thecombination treatment of two pseudo tubers and goat manure which had the highestvalue on all peubahs observed which were increased growth and yield of K. rotundasignificantly.

MORFOLOGI SEMAI BEBERAPA JENIS PALEM HIAS SEEDLING MORPHOLOGY OF SOME ORNAMENTAL PALMS Utami, Ning Wikan; Siregar, Hartutiningsih M
BERITA BIOLOGI Vol 4, No 4 (1998)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v4i4.1273

The results of 18 palms species studied showed that there were three species (Livistona chinensis (Jack) R.Br.ex Mart,Thrinax sp.and Sabal meeacarpg Small) which their cotyledone growth under ground level (group I), their first leaf did not cleave, these had two types of germination i.e. remote tubular (L. chinensis and Thrinax sp.)and remote ligular (S. meeacarpa).Thirthteen species (Heterosphate elata Scheff, Archonthophoenic alexandrae Wendl.& Drude, Areca triandra Roxb., Bentinckia nicobarica (Kurz.) Becc, Chrvsalidocarpus sp., C. lutescens H. Wendl.,Cvrtostachvs eleeans Burret, C.renda Blume, Drvmoploeus pachvcladus H.E.Moore, Neodypsis decarvi Jumelle,Oenocarpus panamanus L.H.Bailey, Pthvchosperma eleeans (R.Br.) Blume and Pritchardia pacifica Seem. & H.Wendl.) produce their cotyledone near ground level (group H), their first leaf cleft into two parts except on the species O. panamanus cleft into four parts, all of these species had adjacent ligular type of germination. There was large variability on the germination.The range of first germination was 12105 days after sowing, last germination was in the range of 78-212 days and the germinationpersentage was 1.3-94.0%.

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