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Character, Xanthone Content and Antioxidant Properties of Mangosteen Fruit’s Hull (Garcinia mangostana L.) at Several Fruit Growth Stadia Kurniawati, Ani; Poerwanto, Roedhy; Sobir, ,; Effendi, Darda; Cahyana, Herry
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 39, No 3 (2011): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The objective of this study was to evaluate the characteristics of mangosteen fruit’s hull, xanthone content, and antioxidant potential on various stadia of mangosteen fruit development. The experiment  was conducted in September 2006 until July  2008 using randomized complete block design, with three replications at maturation stage i.e. 1, 2, 3, and 4 months after anthesis. The parameters being observed were fruit’s hull characters, xanthone content, and antioxidant capacity.  The results of this study showed that fruit diameter and fruit weight increased until three months after anthesis and then did not change significantly once they entered the process of maturity. Thickness of fruit’s hull differed significantly among maturation stage. The thickness of fruit hull was observed at two months and the highest weight was at three months after anthesis. Xanthone content of mangosteen fruit’s hull at a month up to four months after anthesis did not differ significantly however capacity of antioxidant differed significantly among fruit ages, the IC50 values increased with the increase of fruit maturation.   Keywords: Antioxidant, fruit growth, fruit’s hull, mangosteen, xanthone
Inisiasi Tunas Ganda Tanaman Manggis Malinau melalui Kultur In Vitro untuk Perbanyakan Klonal Lestari, Endang Gati; Suhartanto, M. Rahmad; Kurniawati, Ani; Rahayu, Suci
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 41, No 1 (2013): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Mangosteen (Garcinia mangostana L.) is one of the most promising tropical fruits for export. The major constraint toincrease fruit production of the spesies is the long juvenile period. Seedless, sweet and juicy variety of mangosteen had beenfound in Malinau. In vitro propagation technique offers possibility to produce sufficient number of seedlings any time. Thisresearch was aimed at obtaining the appropriate media formula to enhance shoot proliferation. This research consisted ofshoot induction and multiplication and shoot elongation. The materials were the fresh mangosteen seeds from the Malinaumangosteen trees. The explant used in the trial was seeds which were divided into four slices. The use of 8 to 16 mg BA L-1combined with 0.2 mg thidiazuron L-1 resulted in the best shoot induction of 52 shoot buds per explant at the 6th week afterplanting with the mean height of 0.3 cm. Upon subculturing in to the similar media, the number of shoot tends to increase.For multiplication, low concentration of BA (2 to 4 mg L-1) and thidiazuron 0.05 mg L-1 were applied to increase the numbersof shoots. The total shoot number obtained in the media with 0.05 thidiazuron without BA was 11.25 and in the media with 2mg BA L-1 + 0.05 mg thidiazuron L-1 was 8.7 shoot explant-1. The result showed that the best media for shoot elongation wasMS + 1 mg BA L-1 + 2 mg kinetin L-1. The length of the shoots were in the range of 0.5-0.8 cm.Keywords: BA, Garcinia mangostana, in vitro culture, shoot multiplication, thidiazuron
Motode Adaptasi Tanaman Sambung Nyawa terhadap Cahaya-UV untuk meningkatkan Produksi Flavonoid Widodo, Winarso D.; Kurniawati, Ani; P, Edi Djauhari
Jurnal Ilmu Pertanian Indonesia Vol 13, No 3 (2008): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Penelitian ini bertujuan untuk mempelajari pengaruh paparan tipe dan periode pemaparan radiasi UV pada karakter agronomi, tanggap fisiologi dan biokimia
PENGARUH PUPUK BORON (B) DAN SENG (Zn) TERHADAP LAYU PENTIL DAN BUAH KAKAO (Theobroma cacao L.) YANG DAPAT DIPANEN Kurniawati, Ani; Wachjar, Ade; Sinaga, Anita Th.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 26, No 3 (1998): Buletin Agronomi
Publisher : Bogor Agricultural University

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Abstract

The experiment was aimed to study the effect of B and Zn on Cherelle Wilt and cacao production. The experiment was conducted at Rajamandala Plantation from March to September 1997.           Randomized Complete Block Design was used in this experiment with two factor and three replications. The first factor was 4 levels concentration of B fertilizer : 0 ppm Borax (BO), 3350 ppm Borax (B1), 6700 ppm Borax (B2), and 10050 ppm Borax (B3). The second factor was 4 levels concentration of Zn fertilizer : 0 ppm ZnSO4 (S0), 1250 ppm ZnSO4 (S0), 2500 ppm ZnSO4 (S0), and 3750 ppm ZnSO4 (S0).           The result showed that B fertilizer decrease the cumulative numbers of new cherelle, cherelle wilt, good cherelle, and cacao production. Zn fertilizer did not influence all of the parameters. Interaction of B and Zn fertilizer increase the cumulative number of new cherelle and decrease the cumulative numbers of cherelle wilt.
Pertumbuhan, Produksi dan Kandungan Triterpenoid Dua Jenis Pegagan (Centella asiatica L. (Urban)) Sebagai Bahan Obat pada Berbagai Tingkat Naungan Kurniawati, Ani; Darusman, Latifah K.; Rachmawaty, Rani Yulie
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 33, No 3 (2005): Jurnal Agronomi Iindonesia
Publisher : Bogor Agricultural University

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Abstract

The research was aimed to determine the optimum shading level and effect two types of Indian Pennywort (Centella asiatica L. Urban)) on growth, production, and triterpernoid. The research was conducted on  March until November 2004 at BIOFARMAKA Research Station, Darmaga and chemical analysis was conducted at Analytical Chemistry Laboratory, FMIPA, Baranangsiang. Split plot design with two factors was used in this experiment. The first factor was shading level as main plots consisting of 0, 25, 55, and 75% shading level. The second factor was type of Indian Pennywort  as subplots  consisting  of big and small Indian Pennywort. Result of the reseach showed that shading effects decrease leaf area indeks, yield, and composition of triterpenoid content of Indian Pennywort. No shading treatment  showed optimum growth and yield. The combination of 25% shading and small type of Indian Pennywort  gave the highest triterpenoid content. Both types of Indian Pennywort showed best growth; the difference in length of petiole, number of leaf  and shoots but the small one gave the best yield.   Key words :  Indian Pennywort type, shading level, triterpenoid  
Evaluation of Fruit Characters, Xanthones Content and Antioxidant Properties of Various Qualities of Mangosteens (Garcinia mangostana L.) Kurniawati, Ani; Poerwanto, Roedhy; Sobir, ,; Effendi, Darda; Cahyana, Herry
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 38, No 3 (2010): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Xanthone in mangosteen fruit hull has antioxidant activities. The objective of this experiment was to determine xanthones content, physical and chemical characters, and antioxidant potentials of several groups of mangosteens qualities. The experiment was carried out in January until August 2008. The research used a randomized complete block design with four replications. The treatments were four physical fruit conditions: large size mangosteens (≥ 100 g), small size mangosteens (min. 50 g), yellow sap dotted fruits, and scabbed fruit. The parameters being observed were physical and chemical characteristics, xanthone content, and radical scavenging activity of mangosteen fruit hull extract. The results demonstrated that the physical condition of fruit significantly affected physical fruit hull characters and chemical fruit characters. Characters of fruit hull, thickness, fresh weight, and dry weight, differed among fruit qualities. The physical condition of fruit hull also significantly influenced total soluble solid and vitamin C content, but did not affect total titrable acid and degree of acidity of the fruits. Fruit hulls of all groups of mangosteen qualities had similar antioxidant properties with the IC50 value of 5.57-6.11 ppm.   Keywords: benzophenone, vitamin C, yellow sap, scab
Respon Pertumbuhan dan Produksi Jintan Hitam (Nigella sativa L.) dengan Pemupukan Nitrogen dan Fosfor Suryadi, Rudi; Ghulamahdi, Munif; Kurniawati, Ani
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 43, No 3 (2015): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

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ABSTRACTBlack cumin (Nigella sativa L.) is a native medicinal plant to subtropical West Asia and the Mediterranean regions. So far, information regarding black cumin fertilization is still limited. The objectives of this study was to obtain the optimum rate of N and P fertilizer in order to promote the growth and production of black cumin under tropical climates. This research was conducted at Manoko Experimental Station, Lembang, West Java from October 2012 to January 2013. The research was arranged in randomized complete block design with two factors and three replications. The first factor was four rates of N fertilizer (0, 40, 80, 120 kg N ha-1), and the second factor was four rates of P fertilizer (0, 40, 80, 120 kg P2O5 ha-1). The results showed that application of N and P fertilizers increased plant height, leaf number, branch number, leaf area, leaf area index, relative growth rate, net assimilation rate, plant dry weight, number of capsule per plant, number of seed per capsule, seed weight per plant, and weight of 1,000 seeds. Moreover, growth and production of black cumin still increased at the highest rates of N and P fertilizers, therefore, it is necessary to study for N and K at higher rates in order to obtain optimum production rate.Keywords: medicinal plant, rate of fertilizer, tropical
MENINGKATKAN KEMAMPUAN MENGENAL HURUF A, B, C, MELALUI KARTU GAMBAR DI KELOMPOK BERMAIN AL-A’YUN Kurniawati, Ani; Reza, Muhammad
PAUD Teratai Vol 3, No 3 (2014): Volume 3 Yudisium oktober 2014
Publisher : PAUD Teratai

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Penelitian ini dilatarbelakangi oleh pembelajaran untuk meningkatkan kemampuan mengenal huruf A, B, C melalui media kartu gambar di Kelompok Bermain Al-A’yun Ngembeh Dlanggu Mojokerto. Berdasarkan pengamatan yang dilakukan oleh peneliti dari 22 jumlah siswa hanya 25% yang dapat mengenal huruf A, B, C dengan baik karena selama ini hanya menggunakan lembar kerja siswa saja. Oleh karena itu, untuk meningkatkan kemampuan mengenal huruf A, B, C dilakukan dengan menggunakan media kartu gambar. Tujuan penelitian ini adalah untuk mendeskripsikan penerapan kartu gambar dapat meningkatkan kemampuan mengenal huruf A, B, C di Kelompok Bermain Al-A’yun.  Penelitian ini menggunakan jenis penelitian tindakan kelas yang dirancang dalam bentuk siklus berulang. Di setiap siklusnya terdiri dari 4 tahap yaitu: perencanaan, pelasanaan, observasi, dan refleksi. Subjek penelitian ini adalah anak Kelompok Bermain Al-A’yun yang terdiri dari 11 anak laki-laki dan 11 anak perempuan. Teknis pengumpulan datanya menggunakan observasi dan dokumentasi, sedangkan analisis datanya menggunakan metode statistik deskrptif.  Berdasarkan analisis data, terlihat peningkatan kemampuan mengenal huruf A, B, C pada siklus 1 sebesar 30%. Hal ini menunjukkan bahwa penelitian ini belum berhasil karena belum mencapai kriteria keberhasilan yang telah ditetapkan yaitu 80%. Sehingga penelitian ini berlanjut pada siklus yang ke-2. Pada siklus 2 diperoleh data mengenai peningkatan kemampuan mengenal huruf A, B, C melalui media kartu gambar mencapai 100%. Berdasarkan analisis data pada siklus yang ke-2 kriteria yang diharapkan telah tercapai dan penelitian ini dinyatakan berhasil. Dari penilitian ini dapat disimpulkan bahwa kemampuan mengenal huruf A, B, C pada kelompok bermain Al-A’yun dapat ditingkatkan melalui media kartu gambar.Kata kunci : Mengenal Huruf, Kartu GambarAbstractThis research is motivated by learning to improve the ability to know the letters A , B , C through the medium of drawing cards in play groups Al - Ayun Ngembeh Dlanggu Mojokerto . Based on the observations made by the researchers of 22 only 25 % the number of students who can recognize letters A , B , C well as only using only student worksheets . Therefore , to improve the ability to know the letters A , B , C is done by using a media card image . The purpose of this study is to describe the application of image cards can increase the ability to know the letters A , B , C in Al - Ayun Play Group .  This study used classroom action research that is designed in the form of a repeating cycle . In each cycle consists of four phases: planning , pelasanaan , observation , and reflection . The subjects were children of Al - Ayun Play Group consisting of 11 boys and 11 girls . Technical data collection using observation and documentation , while data analysis using statistical methods deskrptif .  Based on data analysis , seen an increase in the ability to know the letters A , B , C in the first cycle by 30 % . This suggests that this research has not been successful because it has not reached the predetermined criteria of success is 80 % . Therefore, this research continues on the 2nd cycle . In cycle 2 data showed an increased ability to recognize the letters A , B , C through the medium of drawing cards reached 100 % . Based on the data analysis cycle 2nd desirable criterion has been reached and the study declared successful . From this research it can be concluded that the ability to recognize letters A , B , C on the Al - Ayun group play can be enhanced through the medium of drawing cards .Keywords : Knowing Letters, Card Picture
Yield Evaluation of Selected Clones Apomictic Iles-Iles (Amorphophallus muelleri Blume) on Second Growing Period Lontoh, Adolf Pieter; Santosa, Edi; Kurniawati, Ani; Sari, and Maryati
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 47, No 2 (2019): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

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Increasing corm production of iles-iles (Amorphophallus muelleri Blume) through genetic improvement is important for increasing farmers? income. However, the study on variety development is rarely reported. Here, yield evaluation of the second growing period was conducted at IPB Experimental Station Leuwikopo Farm, Bogor, Indonesia (-6.5647419, 106.7220331, 17.25z) from August 2017 to July 2018 in order to select candidate clone with high corm production. One-year-old corms of 21 F1 accessions were planted under 55% shading net with four replications. The parent population was set as a control. Results showed that accessions exhibited variation in corm size. The parent population produced corm ranged 622.3-908.3 g in weight (on average 764.2 g). The pooled accessions produced corm 180.7-1527.5 g in weight, corm diameter 71.0-145.8 mm, and corm height 46.6-87.6 mm. Nine accessions produced 5.91-99.88% higher average corms weight than the parent, i.e., BKB, BS, CF, CK, CR, DPG, DPP, SBM, and SHJ. Based on 30% as the basis of corm weight improvement, we concluded that five accessions, i.e., CK, CR, DPG, DPP, and SBM as prospective candidate clones. These accessions could be further evaluated in the third growing period to select best candidates of new variety of A. muelleri.Keywords: Agamosporous, Araceae, breeding strategy, new variety, productivity
Laju Pertumbuhan dan Produksi Jintan Hitam (Nigella sativa L.) dengan Aplikasi Pupuk Kandang Sapi dan Fosfat Alam Ridwan, Taopik; Ghulamahdi, Munif; Kurniawati, Ani
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 42, No 2 (2014): Jurnal agronomi indonesia
Publisher : Bogor Agricultural University

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ABSTRACT Black cumin (Nigella sativa L.) is a medicinal plant and spices belongs to the Ranunculaceae family. Black cumin seed contains some  secondary compounds and rich in nutrition that are beneficial  to health. The objective of this research was to investigate the effect of organic fertilizer rates on plant growth and production of black cumin (Nigella sativa L.). This research was conducted at Manoko Lembang, Bandung Barat from October 2012 to January 2013. The experiment was arranged in a randomized complete block design with three replications. The treatment consists of two factors, i.e. cow manure and rates of rock phosphate. Rates of cow manure applied were 0, 10, 20, and 30 ton ha-1, and rates of rock phosphate were 0, 40, 80, and 120 kg P2O5 ha-1. The results showed that cow manure increased plant height, leaf number, branch  number, flower  number, fresh weight and dry weight of branch, leaf and total plant weight. Rock phosphate fertilizer increased  leaf  area  and  leaf  area index of plant. Fertilizers that can efficiently increase production was 10 tons cow manure ha-1 and 40 kg P2O5 ha-1.Keywords: cow manure, growth, Nigella sativa L, production, rock phosphate