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Planting multifunctional trees (e.g., fruit species) in cities can promote genetic conservation, economic activity, ecosystem services, and social cohesion. However, in Indonesia, the relationship between the abundance of fruit tree species and different city characteristics, including their involvement in the national smart city project, is still unknown. In this study, published reports and field surveys were used to evaluate the fruit tree distribution and its relationship with the characteristics of 224 of 514 Indonesian cities in order to identify tree species for multifunctional city greenery. This is the first study on the distribution of fruit tree species at the national level. The study identified 151 fruit species of 90 genera and 40 families, including large-sized fruits, such as avocados, breadfruit, coconuts, durians, jackfruit, and mangos. On average, cities contained 54 tree species, of which 21 (38.9%) were fruit trees. These findings indicate that cities are important contributors to the genetic conservation of local fruit trees, which can be further evaluated as new city greenery. However, a city’s involvement in the smart city project bore no relationship (p > 0.05) with the number of identified fruit species. Conversely, non-fruit species tended to be more diverse in smart cities. Since the presence of fruit species is associated with the city population, geographic position, climate, altitude, and attitude towards the fragility of sustainable conservation, introducing and maintaining these species as city greenery requires advocacy to city stakeholders.
Edi Santosa; Anas Susila; Winarso Widodo; Nizar Nasrullah; Ismi Ruwaida; Rismita Sari. Exploring Fruit Tree Species as Multifunctional Greenery: A Case of Its Distribution in Indonesian Cities. Sustainability 2021, 13, 7835 .
AMA StyleEdi Santosa, Anas Susila, Winarso Widodo, Nizar Nasrullah, Ismi Ruwaida, Rismita Sari. Exploring Fruit Tree Species as Multifunctional Greenery: A Case of Its Distribution in Indonesian Cities. Sustainability. 2021; 13 (14):7835.
Chicago/Turabian StyleEdi Santosa; Anas Susila; Winarso Widodo; Nizar Nasrullah; Ismi Ruwaida; Rismita Sari. 2021. "Exploring Fruit Tree Species as Multifunctional Greenery: A Case of Its Distribution in Indonesian Cities." Sustainability 13, no. 14: 7835.
Previous studies revealed the impact growing location has on the quantity and quality of essential oils derived from numerous Citrus spp., except on the kaffir lime. This study aims to analyze the relationship shared by agroclimatic variables and soil-plant nutrient status to kaffir lime leaves essential oil yield and main composition. The experiment was conducted between February and April 2019 in four growing locations, namely Bogor (6°36′36″ S, 106°46′47″ E), West Bandung (6°48′12″ S, 107°39′16″ E), Pasuruan (7°45′5″ S, 112°40′6″ E) and Tulungagung (8°6′27″ S, 112°0′35″ E). The highest essential oil yield was obtained from Bogor (1.5%), while the lowest one was from Tulungagung (0.78%). The yield was positively and significantly correlated with the rainfall, soil organic carbon, soil pH, and macronutrient levels, i.e., nitrogen, phosphorus, and magnesium. Citronellal, the major component in metabolites’ profile of kaffir lime leaves essential oils, was significantly affected by the growing location. The absolute content of citronellal was positively and significantly correlated with the actual soil pH and leaf Ca content; furthermore, it negatively correlated with the leaf content of Fe, Mn, Zn, Cu. Pearson correlation analysis also showed (i) a negative significant correlation between the relative percentage of citronellol and annual rainfall intensity; (ii) a negative significant correlation between altitude and relative percentage of caryophyllene, and (iii) a positive significant correlation between the relative percentage of linalool and leaf K content.
Darda Efendi; Rahmat Budiarto; Roedhy Poerwanto; Edi Santosa; Andria Agusta. Relationship among Agroclimatic Variables, Soil and Leaves Nutrient Status with the Yield and Main Composition of Kaffir Lime (Citrus hystrix DC) Leaves Essential Oil. Metabolites 2021, 11, 260 .
AMA StyleDarda Efendi, Rahmat Budiarto, Roedhy Poerwanto, Edi Santosa, Andria Agusta. Relationship among Agroclimatic Variables, Soil and Leaves Nutrient Status with the Yield and Main Composition of Kaffir Lime (Citrus hystrix DC) Leaves Essential Oil. Metabolites. 2021; 11 (5):260.
Chicago/Turabian StyleDarda Efendi; Rahmat Budiarto; Roedhy Poerwanto; Edi Santosa; Andria Agusta. 2021. "Relationship among Agroclimatic Variables, Soil and Leaves Nutrient Status with the Yield and Main Composition of Kaffir Lime (Citrus hystrix DC) Leaves Essential Oil." Metabolites 11, no. 5: 260.
Plant spacing arrangement might benefit hill strength from the impact of strong wind velocity during extreme weather situations. Here, a loading test to evaluate rice hill strength was performed on Ciherang variety grown in square and double row spacing 2:1. The research was conducted at Cilubang village, Dramaga, Bogor, West Java, Indonesia from March to May 2017. Weight holding capacity was evaluated in 85 days after transplanting on four levels of hill height, i.e., 80 cm, 60 cm, 40 cm, and 20 cm above soil level with three-time replication. The results showed that double-spaced hills had 66.0 % ± 3.1 % stronger than those of square spacing at all height measurement. To lodge a hill into 20 cm to 40 cm from soil level, it required 346.7 g to 741.7 g in square spacing, and 555.2 g to 1149.2 g in double row spacing. Stronger hills in double row spacing seemed to correlate with a higher number of tiller and hills architecture; it requires further study in the role of both factors on the hill strength improvement. The present study recommends applying double row spacing to improve rice hill strength especially at a time with a high chance of lodging by strong wind incident.
Edi Santosa; Herdhata Agusta; Dwi Guntoro; Sofyan Zaman. Strength assessment of rice hills from different planting distance by loading simulation. Ilmu Pertanian (Agricultural Science) 2020, 5, 131 -139.
AMA StyleEdi Santosa, Herdhata Agusta, Dwi Guntoro, Sofyan Zaman. Strength assessment of rice hills from different planting distance by loading simulation. Ilmu Pertanian (Agricultural Science). 2020; 5 (3):131-139.
Chicago/Turabian StyleEdi Santosa; Herdhata Agusta; Dwi Guntoro; Sofyan Zaman. 2020. "Strength assessment of rice hills from different planting distance by loading simulation." Ilmu Pertanian (Agricultural Science) 5, no. 3: 131-139.
Edi Santosa; Yoko Mine; Adolf Pieter Lontoh; Nobuo Sugiyama; Maryati Sari; Ani Kurniawati. Gibberellic Acid Application Causes Erratic Flowering on Young Corms of Amorphophallus muelleri Blume (Araceae). The Horticulture Journal 2019, 88, 92 -99.
AMA StyleEdi Santosa, Yoko Mine, Adolf Pieter Lontoh, Nobuo Sugiyama, Maryati Sari, Ani Kurniawati. Gibberellic Acid Application Causes Erratic Flowering on Young Corms of Amorphophallus muelleri Blume (Araceae). The Horticulture Journal. 2019; 88 (1):92-99.
Chicago/Turabian StyleEdi Santosa; Yoko Mine; Adolf Pieter Lontoh; Nobuo Sugiyama; Maryati Sari; Ani Kurniawati. 2019. "Gibberellic Acid Application Causes Erratic Flowering on Young Corms of Amorphophallus muelleri Blume (Araceae)." The Horticulture Journal 88, no. 1: 92-99.
The availability of nutrients in plants depends on the ability of plants to absorb nutrients from the soil. One of the processes absorbed by plants is by the presence of the transpiration process. Good transpiration will provide enough nutrients for plants which increase the productivity and quality of mangosteen. One of the quality standards of mangosteen fruit for export quality is the free from yellow sap contamination. It can be possible that transpiration can improve the quality of mangosteen fruit by applying fertilization. In this study Ca fertilization was carried out on mangosteen seeds, where this study aims to investigate the effectiveness of Ca uptake by mangosteen plants with the level of water loss by transpiration. This research was conducted in November 2016-March 2017 at the Leuwikopo Experimental Garden, Bogor Agricultural University. Morphological observations were carried out in its Experimental Garden and the Postharvest Laboratory whileanalysis of calcium content of plant tissue was done at the Department of Agronomy and Horticulture, Bogor Agricultural University. Data obtained then were analyzed using ANOVA test. If the results were significant, Duncan Multiple Range Test (DMRT) was then tested at 0.05 probability level. The results revealed that the transpiration rate of mangosteen plants from several treatments showed a significant difference, the transpiration rate was higher, especially in fertilized plants. The size of the 12th leaf, plants treated with fertilizer have a larger size than the treatment without fertilization. Fertilizing and providing enough water can maintain the growth of the plants.
Ajmir Akmal; Edi Santosa; Roedhy Poerwanto; Ismadi Yunus; Rd. Selvy Handayani. The Relationship between Transpiration and Calcium Fertilization on Mangosteen (Garcinia mangostana L.) Seedlings. Journal of Tropical Horticulture 2018, 1, 15 -19.
AMA StyleAjmir Akmal, Edi Santosa, Roedhy Poerwanto, Ismadi Yunus, Rd. Selvy Handayani. The Relationship between Transpiration and Calcium Fertilization on Mangosteen (Garcinia mangostana L.) Seedlings. Journal of Tropical Horticulture. 2018; 1 (1):15-19.
Chicago/Turabian StyleAjmir Akmal; Edi Santosa; Roedhy Poerwanto; Ismadi Yunus; Rd. Selvy Handayani. 2018. "The Relationship between Transpiration and Calcium Fertilization on Mangosteen (Garcinia mangostana L.) Seedlings." Journal of Tropical Horticulture 1, no. 1: 15-19.
Amorphophallus variabilis Blume, a member of Araceae, is a fleshy perennial tuber crop endemic in Java Island, Indonesia. The plant produces white edible corm; and it was used as food during famine time before 1960s. Rapid ecological changes and land fragmentations in Java in recent times threaten populations of A. variabilis. Here, compound microsatellite markers were developed in order to develop conservation strategies in the populations. Twelve primers pairs produced high polymorphism ranging from 5 to 22 alleles per locus. The observed and expected heterozygosities ranged from 0.191 to 0.851 and 0.380 to 0.943, respectively. This high allelic diversity indicates that these markers are suitable for the study on population genetic structure. Cross-amplification on related and non-related species was performed. Application of the markers on populations from Dramaga Conservation Forest revealed high allelic richness, high diversity within and among populations. Genetic distance among populations increased with an increase of geographic distance. Present study suggested that, it is important to study population of A. variabilis in Java in order to understand the population genetic structure and develop effective in situ conservation programs.
Edi Santosa; Chun Lan Lian; Yoko Mine; Ken Takahata; Nobuo Sugiyama. ISOLATING MICROSATELLITE FROM Amorphophallus variabilis AND ITS APPLICATION FOR POPULATION STUDY IN DRAMAGA CONSERVATION FOREST, INDONESIA. BIOTROPIA 2018, 25, 22 -32.
AMA StyleEdi Santosa, Chun Lan Lian, Yoko Mine, Ken Takahata, Nobuo Sugiyama. ISOLATING MICROSATELLITE FROM Amorphophallus variabilis AND ITS APPLICATION FOR POPULATION STUDY IN DRAMAGA CONSERVATION FOREST, INDONESIA. BIOTROPIA. 2018; 25 (1):22-32.
Chicago/Turabian StyleEdi Santosa; Chun Lan Lian; Yoko Mine; Ken Takahata; Nobuo Sugiyama. 2018. "ISOLATING MICROSATELLITE FROM Amorphophallus variabilis AND ITS APPLICATION FOR POPULATION STUDY IN DRAMAGA CONSERVATION FOREST, INDONESIA." BIOTROPIA 25, no. 1: 22-32.
Demand on fruits of Leunca (Solanum nigrum L.) is increasing in Indonesia due to a rapid expansion of ethnic restaurants, especially Sundanese restaurants. Most fruits come from semi-intensive cultivation in intercropping system, leading to low productivity. In order to improve productivity, nitrogen experiment was carried out at field of Leuwikopo Farm of Bogor Agricultural University, Bogor-Indonesia, during rainy season from December 2013 to April 2014. Four levels of nitrogen, i.e., 0, 60, 120, and 180 kg N ha-1, were arranged in a randomized complete block design with four replicates. The results revealed that canopy architecture, dry matter and fruit production, and fruit quality were highly affected by nitrogen application. Increasing nitrogen levels increased biomass and fruit production. Plants treated with nitrogen at level of 60 kg ha-1 produced ideal height for local labor and stable weekly fruit production than other levels. Hence, N fertilizer is essential for achieving high productivity of S. nigrum.Keywords: canopy shape, fruit load, indigenous vegetable, leunca, ranti kebo ABSTRAK Permintaan buah Leunca (Solanum nigrum L.) terus meningkat di Indonesia sejalan dengan perkembangan restoran etnis khususnya restoran Sunda. Sebagian besar buah leunca berasal dari tanaman sampingan secara tumpangsari, sehingga produktivitas rendah. Dalam rangka meningkatkan produktivitas, percobaan pemberian nitrogen dilakukan di Kebun Percobaan Leuwikopo IPB, Bogor pada musim hujan Desember 2013 sampai April 2014. Nitrogen diberikan empat taraf yaitu 0, 60, 120, dan 180 kg N ha-1, yang disusun dalam rancangan acak kelompok dengan empat ulangan. Hasil menunjukkan bahwa bentuk kanopi, produksi bahan kering dan produksi buah serta kualitas buah dipengaruhi oleh pemberian nitrogen. Peningkatan dosis nitrogen meningkatkan bahan kering dan produksi buah. Tanaman dengan perlakuan 60 kg N ha-1 menghasilkan tinggi yang ideal bagi pemanen, dan hasil mingguan yang stabil dibandingkan dengan taraf yang lebih besar. Oleh karena itu, pemupukan nitrogen penting dilakukan untuk meningkatkan produktivitas leunca.Kata kunci: beban buah, bentuk kanopi, leunca, ranti kebo, sayuran tradisional
Edi Santosa; Marcella Putriantari; Hajime Nakano; Yoko Mine; Nobuo Sugiyama. Canopy Achitecture, Biomass and Fruit Production of Solanum nigrum L. as Determined by Nitrogen Application. Jurnal Hortikultura Indonesia 2017, 8, 162 -170.
AMA StyleEdi Santosa, Marcella Putriantari, Hajime Nakano, Yoko Mine, Nobuo Sugiyama. Canopy Achitecture, Biomass and Fruit Production of Solanum nigrum L. as Determined by Nitrogen Application. Jurnal Hortikultura Indonesia. 2017; 8 (3):162-170.
Chicago/Turabian StyleEdi Santosa; Marcella Putriantari; Hajime Nakano; Yoko Mine; Nobuo Sugiyama. 2017. "Canopy Achitecture, Biomass and Fruit Production of Solanum nigrum L. as Determined by Nitrogen Application." Jurnal Hortikultura Indonesia 8, no. 3: 162-170.
The corms and leaves of elephant foot yams (Amorphophallus paeoniifolius (Dennst.) Nicolson) are important foods in the local diet in many Asian regions. The crop has high productivity and wide agroecological adaptation and exhibits suitability for the agroforestry system. Although the plant is assumed to reproduce via panmixia, a comprehensive study on the genetic background across regions to enhance wider consumer palatability is still lacking. Here, ten informative microsatellites were analyzed in 29 populations across regions in India, Indonesia and Thailand to understand the genetic diversity, population structure and distribution to improve breeding and conservation programs. The genetic diversity was high among and within regions. Some populations exhibited excess heterozygosity and bottlenecking. Pairwise FST indicated very high genetic differentiation across regions (FST = 0.274), and the Asian population was unlikely to be panmictic. Phylogenetic tree construction grouped the populations according to country of origin with the exception of the Medan population from Indonesia. The current gene flow was apparent within the regions but was restricted among the regions. The present study revealed that Indonesia and Thailand populations could be alternative centers of the gene pool, together with India. Consequently, regional action should be incorporated in genetic conservation and breeding efforts to develop new varieties with global acceptance.
Edi Santosa; Chun Lan Lian; Nobuo Sugiyama; Raj Shekhar Misra; Patchareeya Boonkorkaew; Kanokwan Thanomchit. Population structure of elephant foot yams (Amorphophallus paeoniifolius (Dennst.) Nicolson) in Asia. PLOS ONE 2017, 12, e0180000 -e0180000.
AMA StyleEdi Santosa, Chun Lan Lian, Nobuo Sugiyama, Raj Shekhar Misra, Patchareeya Boonkorkaew, Kanokwan Thanomchit. Population structure of elephant foot yams (Amorphophallus paeoniifolius (Dennst.) Nicolson) in Asia. PLOS ONE. 2017; 12 (6):e0180000-e0180000.
Chicago/Turabian StyleEdi Santosa; Chun Lan Lian; Nobuo Sugiyama; Raj Shekhar Misra; Patchareeya Boonkorkaew; Kanokwan Thanomchit. 2017. "Population structure of elephant foot yams (Amorphophallus paeoniifolius (Dennst.) Nicolson) in Asia." PLOS ONE 12, no. 6: e0180000-e0180000.
Edi Santosa; Chun Lan; Nobuo Sugiyama; Raj Shekhar; Patchareeya Boonkorkaew; Kanokwan Thanomchit. DNA preparation of Amorphophallus paeoniifolius for SSR evaluation v1 (protocols.io.ht3b6qn). protocols.io 2017, 1 .
AMA StyleEdi Santosa, Chun Lan, Nobuo Sugiyama, Raj Shekhar, Patchareeya Boonkorkaew, Kanokwan Thanomchit. DNA preparation of Amorphophallus paeoniifolius for SSR evaluation v1 (protocols.io.ht3b6qn). protocols.io. 2017; ():1.
Chicago/Turabian StyleEdi Santosa; Chun Lan; Nobuo Sugiyama; Raj Shekhar; Patchareeya Boonkorkaew; Kanokwan Thanomchit. 2017. "DNA preparation of Amorphophallus paeoniifolius for SSR evaluation v1 (protocols.io.ht3b6qn)." protocols.io , no. : 1.
Underground corm of Amorphophallus muelleri Blume contained glucomannan, a raw material widely used in beverage, food and medicinal industries. In Indonesia, A. muelleri is grown under intercropping system, however, average corm production was considered low. The low productivity could be related to the low input of chemical fertilizers. Therefore, the effects of NPK fertilizers and methods of application on A. muelleri productivity were evaluated in the present study for intercropping system. Two experiments were conducted at Leuwikopo Experimental Farm, Bogor, Indonesia from 2010-2012 under canopy of coffee trees. First experiment was conducted using four levels of N, P, and K applications, i.e., N:P2O5:K2O at the rate 0:0:0, 100:60:80, 125:60:100 and 150:60:120 kg ha-1. In second experiment, N:P2O5:K2O fertilizers at the rate of 100:60:80 were applied by conventional (solid) and liquefied. Results of first experiment showed that application of N, P and K at rate of 100 kg, 60 kg, and 80 kg ha-1 produced fresh corm weight 636.3±91.7 g per plant or increased by 63% higher than control. However, higher rate of NPK application did not increase corm yield, possibly due to the occurrence of leaf discoloration. Higher rates of NPK also delayed harvest time 1 to 2 weeks compared with control and caused wide variation of corm size. Thus, excess application of NPK should be avoided for high productivity of A. muelleri. Second experiment showed that there was no significant different among methods of application on fresh corm weight, i.e., 413 g and 396 g from conventional and liquefied applications, respectively. These experiments conclude that application of NPK is important to enhance A. muelleri production in intercropping system.
Edi Santosa; Anas Dinurrohman Susila; Adolf Pieter Lontoh; Yoko Mine; Nobuo Sugiyama. NPK Levels and Application Methods on Productivity of Amorphophallus muelleri Blume in Intercropping System. Jurnal Jamu Indonesia 2016, 1, 1 -8.
AMA StyleEdi Santosa, Anas Dinurrohman Susila, Adolf Pieter Lontoh, Yoko Mine, Nobuo Sugiyama. NPK Levels and Application Methods on Productivity of Amorphophallus muelleri Blume in Intercropping System. Jurnal Jamu Indonesia. 2016; 1 (2):1-8.
Chicago/Turabian StyleEdi Santosa; Anas Dinurrohman Susila; Adolf Pieter Lontoh; Yoko Mine; Nobuo Sugiyama. 2016. "NPK Levels and Application Methods on Productivity of Amorphophallus muelleri Blume in Intercropping System." Jurnal Jamu Indonesia 1, no. 2: 1-8.
There are many studies on agronomic and economic advantages of iles-iles (Amorphophallus muelleri Blume), leading to high demand on seed to support the rapid production expansion in many Asian countries. By contrast, there are few studies on flowering phenology and flower morphology although they affect the seed production. Therefore, we evaluated flowering phenology and flower morphology of 80 plants of A. muelleri grown in a field under 65% artificial shading net at Leuwikopo Experimental Farm IPB Darmaga, Bogor, Indonesia from May 2015 to July 2016 in order to improve seed production. A. muelleri produced solitary spadix, with female flowers at the lower part and male flowers at the upper part. Spadix grew slowly for 56-71 days after bud break, and then grew rapidly thereafter for 30-35 days until anthesis. Seed was harvested 9.6 to 10.2 months after anthesis. We devided the development of spadix into seven phases, bud break as stage I and berry maturity as stage VII. Stage VI to VII determined seed production. Seed production was also affected by roots formation and spadix size. There were strong positive correlations between lengths of the female zones with berry production. Some morphological characteristics of spadix were dependent on corm size, thus, it was likely that agronomic improvement to enhance female flower and corm sizes wasimportant in seed production.Keywords: developmental stage, female flower, iles-iles, male flower, seed production ABSTRAKTelah banyak kajian keunggulan agronomi dan ekonomi iles-iles (Amorphophallus muelleri Blume), sehingga mendorong peningkatan permintaan benih untuk mendukung perluasan areal produksi di banyak negara Asia. Namun demikian, kajian fenologi dan morfologi bunga khususnya terkait produksi benih masih terbatas. Oleh karena itu, kami mengkaji perkembangan dan morfologi 80 bunga iles-iles yang ditanam di bawah paranet 65% di Kebun Percobaan Leuwikopo IPB, Bogor, Indonesia dari Mei 2015 sampai Juli 2016 dalam rangka perbaikan produksi benih. Iles-iles menghasilkan sebuah tongkol bunga dengan bunga betina pada bagian bawah dan bunga jantan pada bagian atas. Tongkol bunga tumbuh lambat 58-71 hari setelah pecah tunas, diikuti tumbuh cepat 30-35 hari hingga antesis, dan biji dipanen 9.6 sampai 10.2 bulan setelahnya. Perkembangan bunga dari pecah tunas hingga buah matang dapat dibagi menjadi tujuh tahap. Tahap VI ke tahap VII menentukan keberhasilan produksi biji iles-iles. Selain itu, keberhasilan produksi biji juga dipengaruhi oleh keberadaan akar dan ukuran tongkol khususnya panjang bagian bunga betina. Beberapa karakter morfologi bunga iles-iles dipengaruhi oleh ukuran umbi saat tanam. Oleh karena itu, perlu perbaikan agronomis untuk meningkatkan ukuran umbi dan ukuran bunga betina guna mendukung produksi benih.Kata kunci: bunga betina, bunga jantan, iles-iles, produksi benih, tahap pertumbuhan
Edi Santosa; Adolf Pieter Lontoh; Ani Kurniawati; Maryarti Sari; Nobuo Sugiyama. Flower Development and Its Implication for Seed Production on Amorphophallus muelleri Blume (Araceae). Jurnal Hortikultura Indonesia 2016, 7, 65 -74.
AMA StyleEdi Santosa, Adolf Pieter Lontoh, Ani Kurniawati, Maryarti Sari, Nobuo Sugiyama. Flower Development and Its Implication for Seed Production on Amorphophallus muelleri Blume (Araceae). Jurnal Hortikultura Indonesia. 2016; 7 (2):65-74.
Chicago/Turabian StyleEdi Santosa; Adolf Pieter Lontoh; Ani Kurniawati; Maryarti Sari; Nobuo Sugiyama. 2016. "Flower Development and Its Implication for Seed Production on Amorphophallus muelleri Blume (Araceae)." Jurnal Hortikultura Indonesia 7, no. 2: 65-74.
The genetic variation and relationships of the mangosteen (Garcinia mangostana L.) were observed across mangosteen populations in Java, Indonesia using newly identified microsatellite loci and morphological characters. In this study, we developed an improved protocol to isolate microsatellite loci, named Selective Repeats from AFLP Sequence, by using a hybridized membrane. Twenty microsatellite loci were evaluated using 78 individuals from five mangosteen populations, and we successfully amplified four closely related Garcinia species, including G. malaccensis, G. hombroniana, G. celebica, and G. porrecta. Eight loci were monomorphic and the others were polymorphic. Sixty-nine alleles were found, with 3.491 per locus on an average. Genetic diversity (Hʹ) was calculated with an average across loci within population (HʹS) as 0.39, an average loci across many populations (HʹT) as 0.444, and genetic differentiation (FʹST) as 0.147. Furthermore, based on morphological characters, mangosteen individuals from four populations including Leuwiliang, Wanayasa, Puspahiang, and Kaligesing also had morphologically distinct fruit weight, rind weight, and rind thickness among populations. The study also elucidated the dispersal pattern of mangosteen in Java; the source of the genotype mangosteen in Java population was the Wanayasa population. In addition, we found evidence of tetraploidy in mangosteen. These results have potential applications in future breeding, conservation studies, and genetic assessment of mangosteen and their closely related species.
Deden Derajat Matra; Roedhy Poerwanto; Edi Santosa; Sobir; Hisao Higashio; Hiroyuki Anzai; Eiichi Inoue. Analysis of Allelic Diversity and Genetic Relationships Among Cultivated Mangosteen (Garcinia mangostana L.) in Java, Indonesia Using Microsatellite Markers and Morphological Characters. Tropical Plant Biology 2016, 9, 29 -41.
AMA StyleDeden Derajat Matra, Roedhy Poerwanto, Edi Santosa, Sobir, Hisao Higashio, Hiroyuki Anzai, Eiichi Inoue. Analysis of Allelic Diversity and Genetic Relationships Among Cultivated Mangosteen (Garcinia mangostana L.) in Java, Indonesia Using Microsatellite Markers and Morphological Characters. Tropical Plant Biology. 2016; 9 (1):29-41.
Chicago/Turabian StyleDeden Derajat Matra; Roedhy Poerwanto; Edi Santosa; Sobir; Hisao Higashio; Hiroyuki Anzai; Eiichi Inoue. 2016. "Analysis of Allelic Diversity and Genetic Relationships Among Cultivated Mangosteen (Garcinia mangostana L.) in Java, Indonesia Using Microsatellite Markers and Morphological Characters." Tropical Plant Biology 9, no. 1: 29-41.
Fertilizer application in elephant foot yams (Amorphophallus paeoniifolius (Dennst.) Nicolson) intercropping system is rare in Indonesia, therefore, NPK fertilizers experiment was conducted under the shade of 10-year-old coffee plantation at Leuwikopo Experimental Farm, Bogor, Indonesia, in order to increase the productivity of elephant foot yam intercropped with coffee trees. Prior to planting, 20 ton ha-1 of goat manure was applied. Four NPK combinations, i.e., N, P2O5, K2O at the rate of 0, 0 and 0; 100, 60 and 80; 125, 60 and 100; and 150, 60 and 120 kg ha-1, were applied. Results showed that there were no significant differences in leaf number per plant, petiole size and rachis length among treatments. Application of NPK decreased photosynthetic rates, while increasing rate of N and K2O had no effect on photosynthetic rates. NPK application at the 100 N, 60 P2O5 and 80 K2O kg ha-1 (N100P60K80 treatment) or larger prolonged growth duration regardless of NPK levels, and there was a close relationship between corm yield and growth duration. As a result, corm fresh mass was higher in the 100:60:80 kg ha-1 treatment than in control. In the N125P60K100 and N150P60K120 kg ha-1 treatments, leaves were damaged by heavy rains and winds, counteracting beneficial effect of NPK on growth duration and corm yield. These results suggested the importance of delay of entering dormancy for an increase in productivity of A. paeoniifolius.Keywords: NPK fertilizers, photosynthesis, productivity, prolong growth, tuber crop
Edi Santosa; Anas Dinurrohman Susila; Adolf Pieter Lontoh; Arisa Noguchi; Ken Takahata; Nobuo Sugiyama. NPK Fertilizers for Elephant Foot Yam (Amorphophallus paeoniifolius (Dennst.) Nicolson) Intercropped with Coffee Trees. Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 2016, 43, 257 .
AMA StyleEdi Santosa, Anas Dinurrohman Susila, Adolf Pieter Lontoh, Arisa Noguchi, Ken Takahata, Nobuo Sugiyama. NPK Fertilizers for Elephant Foot Yam (Amorphophallus paeoniifolius (Dennst.) Nicolson) Intercropped with Coffee Trees. Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy). 2016; 43 (3):257.
Chicago/Turabian StyleEdi Santosa; Anas Dinurrohman Susila; Adolf Pieter Lontoh; Arisa Noguchi; Ken Takahata; Nobuo Sugiyama. 2016. "NPK Fertilizers for Elephant Foot Yam (Amorphophallus paeoniifolius (Dennst.) Nicolson) Intercropped with Coffee Trees." Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 43, no. 3: 257.
Indigenous vegetables have become popular in recent Indonesian diet, but agronomic and economic studies on these crops are limited. The objective of this research was to investigate the cultural technique of indigenous vegetables, their uses and economic importance in West Java, Indonesia. Initial market observation was conducted in Bogor to determine the economic value of indigenous vegetables. In depth observations of the indigenous vegetables and interviews with merchants, farmers and consumers were conducted in three districts, i.e., Bogor, Cianjur and Tasikmalaya, focusing on four indigenous vegetables familiar to local people, i.e., genjer (Limnocharis flava (L.) Buchenau), kenikir (Cosmos caudatus Kunth.), leunca (Solanum americanum Miller) and poh-pohan (Pilea melastomoides (Poir.) Wedd.). This study showed that indigenous vegetables have been produced in extensive and semi-intensive cultivations and are sold in local markets daily, although local people do not consume them frequently. Indigenous vegetables held a market share of less than 5% at local markets, and accounted for less than 10% in household vegetable consumption. The reasons for consumers to choose indigenous vegetables were familiarity to these crops, moderate prices, family members’ preference, availability and ease of preparation. Generally, younger family members (30 years old), possibly due to lack of information on its use, unfamiliar flavor and high availability of other commercial vegetables commonly grown worldwide.Keywords: Cosmos caudatus, Limnocharis flava, local knowledge, Pilea melastomoides, Solanum americanumABSTRAKPopularitas sayuran indigenus terus meningkat di Indonesia, namun studi agronomi dan ekonominya masih terbatas. Penelitian bertujuan mengkaji budidaya, pemanfaatan dan nilai ekonomis sayuran indigenus di Jawa Barat, Indonesia. Penelitian pendahuluan dilakukan di pasar di wilayah Bogor. Penelitian mendalam dilakukan dengan mewawancarai pedagang, petani dan konsumen, serta mengamati di lahan petani di tiga kabupaten yakni Bogor, Cianjur dan Tasikmalayauntuk empat sayuran indigenus utama yakni genjer (Limnocharis flava (L.) Buchenau), kenikir (Cosmos caudatus Kunth.), leunca (Solanum americanum Miller) dan poh-pohan (Pilea melastomoides (Poir.) Wedd.). Studi menunjukkan bahwa sayuran indigenus diproduksi secara intensif dan semi intensif, serta dijual di pasar setiap hari, walaupun penduduk setempat tidak mengkonsumsi secara teratur. Sayuran indigenus mengisi celung pasar kurang dari 5% dan memenuhi kurang dari 10% kebutuhan sayuran rumah tangga. Konsumen memilih sayuran indigenus karena sudah terbiasa mengkonsumsi, harga terjangkau, disukai anggota keluarga,ketersediaan dan kemudahan mengolah. Secara umum, anggota keluarga muda (usia < 30 tahun) lebih jarang membeli sayuran indigenus dibanding yang lebih tua (usia > 30 tahun), kemungkinandisebabkan...
Edi Santosa; Utami Prawati; Yoko Mine; Nobuo Sugiyama. Agronomy, Utilization and Economics of Indigenous Vegetables in West Java, Indonesia. Jurnal Hortikultura Indonesia 2015, 6, 125 -134.
AMA StyleEdi Santosa, Utami Prawati, Yoko Mine, Nobuo Sugiyama. Agronomy, Utilization and Economics of Indigenous Vegetables in West Java, Indonesia. Jurnal Hortikultura Indonesia. 2015; 6 (3):125-134.
Chicago/Turabian StyleEdi Santosa; Utami Prawati; Yoko Mine; Nobuo Sugiyama. 2015. "Agronomy, Utilization and Economics of Indigenous Vegetables in West Java, Indonesia." Jurnal Hortikultura Indonesia 6, no. 3: 125-134.
Sobir; R. Poerwanto; E. Santosa; S. Sinaga; E. Mansyah. GENETIC VARIABILITY OF MANGOSTEEN, AN APOMICTIC GARCINIA. Acta Horticulturae 2013, 155 -164.
AMA StyleSobir, R. Poerwanto, E. Santosa, S. Sinaga, E. Mansyah. GENETIC VARIABILITY OF MANGOSTEEN, AN APOMICTIC GARCINIA. Acta Horticulturae. 2013; (975):155-164.
Chicago/Turabian StyleSobir; R. Poerwanto; E. Santosa; S. Sinaga; E. Mansyah. 2013. "GENETIC VARIABILITY OF MANGOSTEEN, AN APOMICTIC GARCINIA." Acta Horticulturae , no. 975: 155-164.
Research papers on horticulture crops, biotechnology, tomato, apple, fruits vegetables, irrigation, water stress, drought resistance, postharvest technology etc
Edi Santosa; Yoko Mine; Miki Nakata; Chunlan Lian; Nobuo Sugiyama. Genetic diversity of cultivated elephant foot yam (Amorphophallus paeoniifolius) in Kuningan, West Java as revealed by microsatellite markers. Journal of Applied Horticulture 2010, 12, 125 -128.
AMA StyleEdi Santosa, Yoko Mine, Miki Nakata, Chunlan Lian, Nobuo Sugiyama. Genetic diversity of cultivated elephant foot yam (Amorphophallus paeoniifolius) in Kuningan, West Java as revealed by microsatellite markers. Journal of Applied Horticulture. 2010; 12 (2):125-128.
Chicago/Turabian StyleEdi Santosa; Yoko Mine; Miki Nakata; Chunlan Lian; Nobuo Sugiyama. 2010. "Genetic diversity of cultivated elephant foot yam (Amorphophallus paeoniifolius) in Kuningan, West Java as revealed by microsatellite markers." Journal of Applied Horticulture 12, no. 2: 125-128.
Edi Santosa; C. L. Lian; Y. Pisooksantivatana; N. Sugiyama. Isolation and characterization of polymorphic microsatellite markers in Amorphophallus paeoniifolius (Dennst.) Nicolson, Araceae. Molecular Ecology Notes 2007, 7, 814 -817.
AMA StyleEdi Santosa, C. L. Lian, Y. Pisooksantivatana, N. Sugiyama. Isolation and characterization of polymorphic microsatellite markers in Amorphophallus paeoniifolius (Dennst.) Nicolson, Araceae. Molecular Ecology Notes. 2007; 7 (5):814-817.
Chicago/Turabian StyleEdi Santosa; C. L. Lian; Y. Pisooksantivatana; N. Sugiyama. 2007. "Isolation and characterization of polymorphic microsatellite markers in Amorphophallus paeoniifolius (Dennst.) Nicolson, Araceae." Molecular Ecology Notes 7, no. 5: 814-817.
J.D. Klein; E. Santosa; L.J. Laarhoven; E.I. Boamfa; F.J.M. Harren; Y. Hebbe. TRACE GAS PRODUCTION FOR RAPID NON-DESTRUCTIVE DETERMINATION OF SEED VIABILITY. Acta Horticulturae 2004, 39 -42.
AMA StyleJ.D. Klein, E. Santosa, L.J. Laarhoven, E.I. Boamfa, F.J.M. Harren, Y. Hebbe. TRACE GAS PRODUCTION FOR RAPID NON-DESTRUCTIVE DETERMINATION OF SEED VIABILITY. Acta Horticulturae. 2004; (631):39-42.
Chicago/Turabian StyleJ.D. Klein; E. Santosa; L.J. Laarhoven; E.I. Boamfa; F.J.M. Harren; Y. Hebbe. 2004. "TRACE GAS PRODUCTION FOR RAPID NON-DESTRUCTIVE DETERMINATION OF SEED VIABILITY." Acta Horticulturae , no. 631: 39-42.
P.C Ram; B.B Singh; A.K Singh; P.N Singh; H.P Singh; Iulia Boamfa; Frans Harren; Edi Santosa; M.B Jackson; T.L Setter; J Reuss; Len Wade; V Pal Singh; R.K Singh. Submergence tolerance in rainfed lowland rice: physiological basis and prospects for cultivar improvement through marker-aided breeding. Field Crops Research 2002, 76, 131 -152.
AMA StyleP.C Ram, B.B Singh, A.K Singh, P.N Singh, H.P Singh, Iulia Boamfa, Frans Harren, Edi Santosa, M.B Jackson, T.L Setter, J Reuss, Len Wade, V Pal Singh, R.K Singh. Submergence tolerance in rainfed lowland rice: physiological basis and prospects for cultivar improvement through marker-aided breeding. Field Crops Research. 2002; 76 (2-3):131-152.
Chicago/Turabian StyleP.C Ram; B.B Singh; A.K Singh; P.N Singh; H.P Singh; Iulia Boamfa; Frans Harren; Edi Santosa; M.B Jackson; T.L Setter; J Reuss; Len Wade; V Pal Singh; R.K Singh. 2002. "Submergence tolerance in rainfed lowland rice: physiological basis and prospects for cultivar improvement through marker-aided breeding." Field Crops Research 76, no. 2-3: 131-152.