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All Journal HAYATI Journal of Biosciences Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Ilmu Pertanian Indonesia Jurnal Fitopatologi Indonesia Jurnal Hortikultura Indonesia (JHI) Jurnal Natur Indonesia Journal of Tropical Soils Agrovigor: Jurnal Agroekoteknologi Jurnal Hortikultura JURNAL AGROTEKNOLOGI Jurnal Agroteknos Warta IHP (Warta Industri Hasil Pertanian) International Journal of Applied Biology Jurnal AGROSAINS dan TEKNOLOGI Journal of Tropical Crop Science Journal of Tropical Horticulture Jerami Menara Perkebunan Jurnal Hexagro Media Pertanian Jurnal Manusia dan Lingkungan International Research Journal of Business Studies

Roedhy Poerwanto

Departemen Agronomi Dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor (IPB University), Jl. Meranti, Kampus IPB Darmaga, Bogor 16680, Indonesia

Author-ID : 342995

Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Energy Environmental Science Industrial & Manufacturing Engineering Medicine & Pharmacology Social Sciences

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Kebutuhan dan Struktur Kelembagaan Rantai Pasok Buah Manggis: Studi Kasus Rantai Pasok di Kabupaten Bogor Astuti, Retno; Marimin, Marimin; Poerwanto, Roedhy; Machfud, Machfud; Arkeman, Yandra
International Research Journal of Business Studies Vol. 3 No. 1 (2010): April-July 2010
Publisher : Universitas Prasetiya Mulya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21632/

Mangosteen (Garcinia mangostana L.) is the highly demanded fruit for export commodity from Indonesia. The biggest mangosteen production center in Indonesia is West Java Province that includes Purwakarta, Subang, Bogor, and Tasikmalaya contributing 90% of mangosteen production in West Java Province and 29% of national mangosteen production. The activities of mangosteen production in West Java Province have not been efficient yet, so the potential source of the fruit in West Java Province is not efficient enough to compete internationally. In order to have competitive advantages, supply chain management in mangosteen business was initiated in Bogor district in 2007 which integrated processes from receiving raw material to selling finished products. Needs identification and institutional structure in emerging supply chain of mangosteen in Bogor District were necessary to be carried out to improve the efficiency and effectiveness of the chain to achieve its objectives. In running its business processes, the member of the chain will be linked between each other. Supply chain needs will also be linked with each other. In this study, Intepretative Structural Modeling was used to describe the relationship between needs of the chain and relationships among the institutions in the chain.

Pertumbuhan Bibit Tanaman Manggis (Garcinia mangostana L.) Setelah Inokulasi dengan Berbagai Galur Agrobacterium rhizogenes1 , Lizawati; Roedhy Poerwanto; , Sobir; Iman Rusmana; Tri Muji Ermayanti
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 35 No. 2 (2007): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Growth of mangosteen essentially depends on its root system. Therefore, it needs technology to obtain stringer mangosteen root system. The use of Agrobacterium rhizogenes bacterium is an alternative. The objectives of this experiment were : 1) to find the effective strain of A. rhizogenes bacterium for inoculation of mangosteen seedling root, 2) to find the best inoculation method for inducing mangosteen seedling root. The materials used in this experiment were ; mangosteen fruit and A. rhizogenes collection from Puslit Biotechnology LIPI Cibinong-Bogor. The experiment was arranged in completely randomized design with two factorial treatments. The first factor : 11 strains A. rhizogenes (ATCC-15834, ATCC-8196, R-1000, 07-20001, A4, A4-J, 509, 510, 511, MAFF 01-1724, and control), the second factor : 2 inoculation methods (cutting and dipping). The results showed that A. rhizogenes of ATCC-15834, 509, 07-20001, A4, and R-1000 increased stem diameter, plant height, leaf number, lateral and tertiary root number, better than ATCC-8196, MAFF 01-1724, 510, 511, A4-J, and control. Cutting root method of inoculation resulted in higher live plant percentage compared to dipping root method. Key words : Agrobacterium rhizogenes, Garcinia mangostana, inoculation

Aktivitas Kitinase dan Peroksidase dari Ekstrak Protein Daun, Akar, Kalus dan Tunas In Vitro Trichosanthes tricuspidata Lour. Dewi Sukma; Roedhy Poerwanto; , Sudarsono; Nurul Khumaida; Suryo Wiyono; I Made Artika
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 36 No. 1 (2008): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

A number of Trichosanthes species has been reported as a source of bioactive protein associated with defense mechanisms such as chitinase. Chitinase and peroxidase of crude protein extracted from leaves, roots, in vitro calli and shoots of T. tricuspidata had been analysed. Calli were induced on MS medium containing combinations of 1 µM NAA + 1 µM BA (K1), 2 µM NAA + 2 µM BA (K2), 3 µM NAA + 3 µM BA (K3), or 4 µM NAA + 4 µM BA (K4). Shoots were cultured in MS with 1 mg/l of BA, while leaves and roots were harvested from six-month old plants grown on the field. Results of the experiment suggested that K1-K4 medium could be used to induce calli although weight of calli from all medium composition was not significantly different (0.19-0.31 g/explant/4 weeks). Calli from K1 medium had the highest of total crude protein content (3.24 mg/ml). The highest of chitinase activity was found in in vitro shoots (6.51 mM pNP/hour/mg protein) and the highest peroxidase activity was in the plant roots (0.25 ∆ 420/minute/mg protein). Key words: in vitro calli, shoots, crude protein, chitinase and peroxidase activities

Pola Kerontokan Buah Tiga Kultivar Mangga , Sakhidin; Bambang S . Purwoko; Roedhy Poerwanto; Slamet Susanto; Sudirman Yahya; Ahmad S. Abidin
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 32 No. 2 (2004): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Information on the pattern of fruit drop of mango is required to determine the appropriate method and time in reducing fruit drop. By this methodf, fruit retention or number of harvested fruit of mango can be increased.The aim of this research was to determine the pattern of fruit drop of Gadung 21, Manalagi 69 and Golek 3 I . The results of this researchs howedt hat the pattern of fruit drop of Gadung2 1, Golek 31 and Manalagi 69 was similar. All cultivars I showed that there was one peak (the highest number of fruit drop) in fruit drop. It occurred at 6 days after anthesis (DAA). After 24 DAA, the number offruit drop was constant, namely near to zero. It occurred until harvest.Key words: Mango, Fruit drop, Fruit set

Studies on Dormancy Periods and Growth Rhythm of Shoot and Root of Mangosteen (Garcinia mangostana L.) Ramdan Hidayat; Achmad Surkati; Roedhy Poerwanto; Latifah K. Darusman; Bambang S. Purwoko
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 33 No. 2 (2005): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Mangosteen has a good prospectus for international market. Many people in the world like this fruit because it is delicious, has high nutrient contents, and it can be consumed as a fresh fruit. The growth of mangosteen is very slow with a very long juvenile period because of its long dormancy period. The objective of this research was to study the dormancy periods and growth rhytm of shoot and root of young and adult mangosteen seedlings. The research used completely randomized design and consisted of two experiments. The first experiment was to study the dormancy and flushing periods. The second experiment was to study the growth patterns of shoot and root foom several ages of mangosteen seedlings. This research was conducted at Mekarsari Fruit Park, Cileungsi, Bogor. The result of the experiment showed that two years old of mangosteen seedling had 5 flushes per year, four years old of mangosteen had 3-4 flushes per year, and eight years old of mangosteen only had 2 flushes. Dormancy periods were significantly different between 2,4 and 8 year of mangosteen seedling. After the seedlings have branches, the dormancy periods become twice as many as that before branching. The roots grew rapidly two weeks before flush and slower after flush occurred. Key words: Garcinia mangostana, dormancy, flush, seedling

PENGARUH PACLOBUTRAZOL TERHADAP PERTUMBUHAN DAN PEMBUNGAAN JERUK SATSUMA MANDARIN PADA BEBERAPA KONDISI SUHU Roedhy Poerwanto; Hiroshi Inoue
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 22 No. 1 (1994): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Two experiments were conducted at phytotron to investigate the effects of paclobutrazol on vegetative growth and flower bud differentiation of Sat sum a Mandarin (Citrus unshiu Marc.) grown under different temperature conditions. One-year-old Satsuma Mandarin trees budded onto trifoliate orange rootstocks were used in these experiments. The trees were planted in root observation chamber (Experiment I) or Wagner's pot (Experiment II) in late, March of 1988. In experiment I the treatments were temperature (20 & 30oC) and paclobutrazol (treated and not treated). Paclobutrazol was applied 3 times to the soil at the rate of 0.5 gram a.i. per tree per application. The growth of shoots and roots were observed at 5-day intervals. In experiment II the treatments were temperature (15, 20, 25, 30°C and field condition) and paclobutrazol (sprayed to the leaves, drenched to the soil, and none). Paclobutrazol was applied 3 times; foliar application was 1000 ppm and soil application was 0.05 grams a.i. per tree per application. Temperature treatments were done from June to December, 1988. At the end of the treatments, the trees were defoliated and then exposed to 25°C to observe flower bud development. . Paclobutrazol inhibited shoot and root elongation effectively. Paclobutrazol decreased dry weight of the plant top (trunk, stem and leaves), but increased root dry weight. Paclobutrazol also increased the root diameter by increasing the number of-cortex cells, although the cell diameter was not different. Paclobutrazol affected nutrients distribution; it decreased nutrients in the top part of trees, and increased nutrient in the root. Effects of paclobutrazol in flower bud differentiation was not significant.

Karakter Fisik dan Kimia Buah Pepaya pada Stadia Kematangan Berbeda Ketty Suketi; Roedhy Poerwanto; Sriani Sujiprihati; , Sobir; Winarso Drajad Widodo
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 38 No. 1 (2010): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The objective of the experiment was to investigate the physical and chemical characteristics of three stadia of maturity based on a range of peel color from green to yellow or based on percentage of the yellow area of fruit peel (stadium 1 = 25-49 % yellow, stadium 2 = 50-74 % yellow, and stadium 3 = above 75 % yellow) on six genotypes of papaya. Each genotype exhibited different days to maturity for each stadium. The fruits of stadium 1, 2 and 3 for IPB 1 were picked at 130, 135, and 140 days after anthesis (DAA); IPB 10A at 160, 165, and 170 DAA; IPB 1 x PB 174 at 135, 140 and 145 DAA; while PB 174, IPB 1 x IPB 10A and IPB 10A x PB 174 were picked at 140, 145 and 150 DAA, respectively. The results indicated that peel firmness was affected by maturity stage on female fruit of IPB 10A. Maturity stage affected chemical characteristics of papaya included total soluble solids (TSS) content (IPB 10A, female fruit of PB 174, female fruit of IPB 1 x IPB 10A, and female fruit of IPB 1 x PB 174), vitamin C content (hermaphrodite fruit of 10 A, female fruit of IPB 1 x IPB 10A) and juice pH (hermaphrodite fruit of IPB 1). IPB 1 genotype can be harvested at all stadia of maturity stage. Hermaphrodite and female fruit of IPB 10 A, female fruit of PB 174, female fruit of IPB 1 x IPB 10A and female fruit of IPB 1 x PB 174 genotype would be better harvested at stadium 3 of maturity stage. Keywords: Carica papaya, papaya genotype, hermaphrodite fruit, female fruit, fruit quality, fruit maturity stage

Akumulasi dan Distribusi Bahan Kering pada Beberapa Kultivar Kacang Tanah Heni Purnamawati; Roedhy Poerwanto; Iskandar Lubis; , Yudiwanti; Sri Astuti Rais; Ahmad Ghozi Manshuri
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 38 No. 2 (2010): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

This research was carried out in April–September 2007. The research objective was to study the dry matter distribution pattern of several peanut cultivars. Twenty cultivars were planted at two different locations, Cikarawang and Sawah Baru Experimental Field but at the same elevation (250 m above sea level). The cultivars were scored according to morphological and physiological characters, total N and total non-structural carbohydrates (TNC), yield and yield components. There were no statistically differences in pod yield, seed yield and harvest index between the cultivars, but there were differences in dry matter distribution between cultivars. TNC content in stem correlated positively with pod ﬁ lling. Carbohydrates for pod ﬁ lling presumed were derived from dry matter accumulation in early pod ﬁ lling stage. It was concluded that the ideal growing type of peanut are early accumulated dry matter but almost no increase of dry matter accumulation in upper part of plant during seed development. Keywords: dry matter distribution, pod ﬁ lling, peanut

Analisis Kedekatan Hubungan antar Genotipe Pepaya Berdasarkan Karakter Morfologi dan Buah Ketty Suketi; Roedhy Poerwanto; Sriani Sujiprihati; , Sobir; Winarso D. Widodo
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 38 No. 2 (2010): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

A study was conducted to determine the variation and relationships among papaya genotypes based on morphological and fruit characteristics in order to produce high quality papaya fruits. Fruit characterization study is very useful for genotype improvement and genotype classiﬁ cation of papaya. In this study the morphological characters of 36 genotypes were analyzed to determine their phenotypic variabilities. The relationships between genotypes based on all of the morphological and fruit characteristics were tested by subjecting the data to multivariate principal component analysis and to cluster analysis. Based on the dendrogram generated from vegetative and generative characters, the 36 genotypes could be grouped into 11 clusters on a threshold of 1.6 and formed 6 clusters on a threshold of 1.8. The dendrogram was able to explain the close relationship between IPB 5 x IPB 1 and IPB 5 x IPB 4, IPB 2 and IPB 7, IPB 1 and IPB 3 genotype. The scattered diagram of generative variable divided the papaya genotypes into three groups based on fruit sizes i.e small group (IPB 1, IPB 3, IPB 4, IPB 3 x IPB 4, IPB 1 x IPB 9), medium group (IPB 5, IPB 7, IPB 8, IPB 9) and big group (IPB 2, IPB 10). The IPB 1, IPB 3 and IPB 4 were different from IPB 2 in fruit shapes, petal length of male ﬂ owers, inﬂ orescence size and fruit length. The hybrid plants obtained from crossings with IPB 10 were different from the other genotypes in the colours of female-, hermaphrodite-, and male ﬂ ower-lobes. Subsequently the scatter diagrams also revealed that several genotypes i.e. IPB 2 x IPB 6, IPB 1 x IPB 5, IPB 1 x IPB 9, IPB 5 x IPB 1 and IPB 5 x IPB 2 had superior characters ideotype similar to IPB 1, IPB 3 and IPB 8 genotypes. Keywords: Carica papaya, hermaphrodite, female, dendrogram, scatter diagram, ideotype

Pollen Viability and Pollen Tube Growth of IPB’s Papaya Ketty Suketi; Cenra Intan Hartuti Tuharea; Winarso Dradjad Widodo; Roedhy Poerwanto
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 39 No. 1 (2011): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The purpose of the research was to examine the pollen germination process and growth rate of pollen tubes of papaya. Pollen tube growth of nine genotypes of papaya (IPB 1, IPB 2, IPB 3, IPB 4, IPB 5, IPB 7, IPB 8, IPB 9, and IPB 10) was investigated in this experiment in order to study their pollen germination rate and pollen viability. The fresh pollen were excised from the fl owers of papaya grown at Tajur Field Station of Research Center for Tropical Fruit, Bogor Agricultural University (IPB), Bogor. The extracted pollen was cultured aseptically on the Brewbaker and Kwack medium (pH 7.3) at ambient temperature of 26-28 °C. Pollen germination and pollen tube growth was observed under optical microscope with 100 and 400 magnifi cation. Papaya pollen viability was not associated with size-based categories of papaya fruits. IPB 4 had the longest pollen tube at fi rst 30 minutes after germination (115.5 µm), whereas IPB 10 had the shortest (99.5 µm). The distance from stigma to ovary in hermaphrodite fl owers varies with genotypes, ranging from 7.38 to 13.44 mm. Average length of pollen tube within four hours of germination for small papaya fruit category (IPB 1, IPB 3, and IPB 4) was 1,030.67 ± 19.14 μm, while the distance between stigma and ovary was short (14.85 ± 2.19 mm) so that the expected of fertilization process occurred sooner. At the end of the experiment (four hours after germination), IPB 1 genotype had the longest pollen tube (1,052 µm) while IPB 9 genotype (913 µm) had the shortest pollen tube. Genotype with the highest percentage of germination at the end experiment was IPB 2 (65.65%), whereas the lowest was IPB 7 (42.56%).

Co-Authors , Sakhidin , Yudiwanti , Yudiwanti . DARMAWAN . SAMANHUDI . SUHARSONO Abdul Munif Achmad Surkati Ade Wachjar Agus Purwito Ahmad Ghozi Manshuri Ahmad Ghozi Mansyuri Ahmad S. Abidin Ahmad Sutopo Akmal, Ajmir ALI NURMANSYAH Alifiya Herwitarahman Anas D Susila Anas Dinurrohman Susila Andria Agusta ANDRIA AGUSTA Ansyori, Ansyori Aris Purwanto Asmini Budiani Bambang S . Purwoko Bambang S. Purwoko Bambang Sapta Purwoko Cenra Intan Hartuti Tuharea CICIK SURIANI D Fatria D Fatria Deden Derajat Matra Defitrianida, Asyhuriyah Wardah Dewi Sukma Dhika Prita Hapsari Dian Fahrianty Didy Sopandie Djoko Santoso Dorly Dorly E Efendi Edi Santosa Edi Santosa Edi Santosa Efendi, Darda EKO SETIAWAN Eko Setiawan Endah Retno Palupi Endang Gunawan Faqih Udin Fauziyah Harahap Fumio Fukuda HAJRIAL ASWIDINNOOR Hanifah Muthmainnah Hartrisari Hardjomidjojo Hiroshi Inoue I Hidayati I MADE ARTIKA I NYOMAN RAI Ilmi, Nadhirah Karimatul Iman Rusmana Inanpi Hidayati Sumiasih, Inanpi Hidayati Indah Wulandari INDAH WULANDARI Irsyad Maulana Iskandar Lubis Jawal Muhammad Anwarudinsyah Juanasri Juanasri JULIARNI JULIARNI Kasutjianingati . Ketty Suketi Kuniyuki Saitoh La Ode Safuan La Ode Safuan Laksono Trisnantoro Latifah K. Darusman Latifah Kosim Darusman Lizawati . Lubis, Wahyu Muhammad Yuha Lukman Liferdi Machfud Machfud Marimin Marimin Matra, Deden Derajat Maulana, Mohamad Akhbar Memen Surahman Mohamad Akhbar Maulana Mohamad Rahmad Suhartanto Muhamad Noor Azizu, Muhamad Noor Muhammad Arif Nasution Muhammad Darmawan Musdalifah, Nuzlul Naohiro Kubota Nian Rimayanti H. Nobuo Sugiyama Nono Sutrisno Nono Sutrisno Nur Wahyu Sariningtias Nurfitri Ramadhani Nurul Khumaida Nurul Khumaida Odit Ferry Kurniadinata Qadir, Abdul Rahayu, Resa Sri Rahmat Budiarto Ramdan Hidayat Rd. Selvy Handayani Resa Sri Rahayu Resa Sri Rahayu Retno Astuti Riana Jumawati Rofiq, Muhamad Abdul Roza Yunita S Susanto Santun R.P. Sitorus Septirosya, Tiara Slamet Susanto Soaloon Sinaga Sobir Sobir Soekisman Tjitrosemito SOEKISMAN TJITROSEMITO Sri Astuti Rais Sri Astuti Rais Sri Yuliani Sri Yuliani Sriani Sujiprihati Sriani Sujiprihati Sriani Sujiprihati Suci Rahayu Sudarsono Sudirman Yahya Suryo Wiyono Sutrisno, Sutrisno T Purnama Tanari, Yulinda Taruna Shafa Arzam Taruna Shafa Arzam, Taruna Shafa TARUNI SRI PRAWAST MIEN KAOMINI ANY ARYANI DEDY DURYADI SOLIHIN Tetty CHAIDAMSARI Tiara, Dede Titin Purnama Tri Muji Ermayanti Tri Muji Ermayanti Trikoesoemaningtyas Vandra Kurniawan Wa Ode Muliastuty Widya Sari Winarso D. Widodo Y A Purwanto Y A Purwanto Yandra Arkeman Yundari, Yundari Yunus, Ismadi

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