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PENDUGAAN PARAMETER GENETIK PADA PERSILANGAN DIALEL BEBERAPA TETUA CABAI (Capsicum annuum L.)
Sri Romaito Dalimunthe1, Abdullah Bin Arif2, Sriani Sujiprihati3 dan Muhamad Syukur3
1. Balai Pengkajian Teknologi Pertanian Sumatera Utara, Jl. AH. Nasution No. 1B, Medan 20143 2. Balai Besar Penelitian dan Pengembangan Pascapanen Pertanian, Jl Tentara Pelajar 12 Bogor 16114Pascasarjana IPB, Gedung MB, Jalan Raya Pajajaran, Bogor, 16151 3. Departemen Agronomi dan Hortikultura, Fakultas Pertanian, IPB, Kampus Dramaga Bogor 16680
High genetic diversity in chili is the basis for a chili breeding program. One of the methods to increase diversity is through crossing. There are several crossing designs in order to produce new varieties, such as diallel crossing. Diallel analysis is a method for studying the inheritance of characteristics from various crossings. The aim of this research was to estimate the genetic parameters, the general combining ability (GCA) and specific combining ability (SCA) of six inbred lines of chili. The research was conducted in November 2008-May 2009 at the Experimental Farm Leuwikopo IPB. Genetic materials used were six inbred lines of chili (IPB C2, IPB C9, IPB C10, IPB C14, IPB C15 and IPB C20) and the F1s of the combination of six inbred lines. The experimental design was Randomized Complete Block Design with a single factor, namely genotype. The number of genotypes were 36 with three replications, so there were 108 units of experiment. The crossing design used was diallel crossing design. The results showed that there were no interaction between genes on the dichotomous height and fruit weight, significant additive effects, the control genes spread unevenly, and relatively high heritability values. Genotype which carried recessive genes the most was IPB C14 and genotype which carried the most dominant genes was IPB C10. IPB C10 showed the highest GCA for dichotomous height and IPB C2 showed the highest GCA on fruit weight. The crossing between IPB C2 x IPB C10 showed the highest SCA for dichotomous height. For fruit weight, crossing of IPB C2x IPB C14 had the highest SCA. Crossing combination of IPB C2 x IPB C14 was the best hybrid.
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ANALISIS INTERVENSI TEKNOLOGI UMUR BIBIT, JAJAR LEGOWO, DAN PEMUPUKAN UREA TERHADAP PRODUKSI PADI
Wahyudi Hariyanto dan Herwinarni EM
Balai Pengkajian Teknologi Pertanian Jawa Tengah
Jl. BPTP no. 40, Sidomulyo, Ungaran, 50501 Kotak Pos 101 Jawa Tengah
Telp. (024) 6924965-9624967, Fax. (024) 6924965
Email : email@example.com
Technology of ICM (Integrated Crop Management) has been introduced to farmers since 2002, but farmers have not applied it until now.The problem is the slow dissemination process, and farmers are still low in implementing some components of ICM. Technology intervention is needed to increase production and productivity. This study aimed to analyze the relationship between seed maturity, jajar legowo and urea fertilizers on rice production. The experiment was conducted in Banyuasin October-December 2012. The method used was observation and FGD (Focus Group Discussion) against ICM field school in Banyumas. The study population totaled 300 farmers spread over the District ICM field school location. The sample was 70 farmers taken by using Slovin formula. Data were analyzed using path analysis. The results showed that the jajar legowo affected rice production by 12.2%, and the use of urea fertilizer by 26.3%. while seed maturity did not have significant effect. Combined together, both technologies affected rice production by 38.5%. It was suggested to implement ICM technology as recommended.
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ANALISIS DATA HASIL PENGUJIAN MULTILOKASI PADI SAWAH MENGGUNAKAN MODEL AMMI
Idris dan Baharudin
Balai Pengkajian Teknologi Pertanian Sulawesi TenggaraJl. Prof. Muh. Yamin No. 89 Kendari 93114
Telp. (0401) 3125871, Fax. (0401) 3123180
Various study of multi-location test of rice genotypes was strongly influenced by field and environmental factors. This study aimed to implement and to identify wetland rice genotypes. Multi-location test was conducted on some rice genotypes in Southeast Sulawesi in 2010 at various locations. Randomized block design was used with three replications in different locations. Data were analyzed using AMMI model. Results showed that rice production had the main effect with the genotype of KUI 1 and KUI 2. Moreover, BIPLOT test found that the genotype 2 of S3393-2F-17-1-1 was the only one of unstable genotype, and the rest were stable genotype. Not surprisingly, genotype (G) 4 (S3382-2D-PN-4-1), G 5 (S3382-2D-PN-6-3-3), G 7 (S3382-2D-PN-2D-1-1), G 11 (S3382-2D-1-1), G13 (Ciherang) and G 14 (Cisantana) were relatively stable. Those genotypes could be recommended as the high potential yield due to higher average production compared with general average. This study also indicated that G 3 (S3381-2D-PN-27-2), G 9 (S4359-E-11-2), and G 12 (IR64) are very suitable for growing in location A at Ladongi. Moreover, in location B study suggested that G 11 (OBS-9595) should be recommended at Wundulako. Finally, in Lambuya, particularly in location C, study indicated that some genotypes can grow well, viz. G 6 (S3382-2D-PN-17-3), G 8 (S4690 G-KN-4-3) and G 14 (Cisantana).
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Muhamad SabranIndonesian Center for Agricultural Biotechnology and Genetics Resources Research and Development
Jalan Tentara Pelajar 3A, Kampus Penelitian Pertanian Cimanggu, Bogor 1611
Telp. (0251) 8337975 Fax. (0251) 8338820
Effective population size is defined as the number of breeding individual in an idealized population that would show the same amount of dispersion of allele frequencies under random genetic drift or the same amount of inbreeding as the population under consideration. Effective population size depends on the census size of the population and the mating system. In autotetraploid population, effective population size also depends on the probability of double reduction, i.e., a meiotic event when two sister chromatids end in the same gamete. In this research, we will study the effect of the probability of double reduction on the effective size of autotetraploid population reproduced by partial selfing. The formula for the effective population size was derived by equating the variance of the change in gene frequency in idealized population and its value in the autotetraploid population with arbitrary rate of partial selfing and double reduction. The resulted formula, and numerical study based on the formula, indicated that the effective size decreases by the increase of probability of double reduction and the rate of selfing. When there is complete selfing, however, the effective size is not affected by the probability of double reduction.
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Statistisi Madya pada Pusat Data dan Sistem Informasi Pertanian
Jl. Harsono RM No.3, Gedung D Lantai IV,
Ragunan - Jakarta Selatan 12550Telp. : (021) 7822638
The statistical method for measuring rice productivity by the CBS is based on sample frame of households. At the implementation of this method, problems were encountered in terms of accuracy in the spread of the sample, the result is often debatable in applying the method in the field survey. To answer these problems, a survey of rice productivity has been developed through land survey framework approach or the method known as Area Frame Method. The purpose of this survey was to test the frame methodology for measuring frame rice productivity, and compare the results of the survey area rice productivity using area frames with the household listing conducted regularly by the CBS. The development of this method was expected to be used for problems that arise in the current method by considering the geographical conditions, the type of irrigation and government policies in order to increase production. Frame Area method has been tested in Cianjur (in 2012) and Garut (in 2013) in the province of West Java. Number of Mesh (land area 1,000 m x 1,000 m on the map ) in Garut was 120 Mesh. Each mesh was divided into five plots, so that the number of plots in Garut were 600 plots. Selection of sample plots was done by combining Systematic Random Sampling and Simple Random Sampling. The results of the trial method in the area of Garut showed that the productivity of upland and lowland rice were statistically significantly different as well as there were differences in the productivity of irrigated and non-irrigated lands, and there was no difference in the productivity of paddy land as recommended by the government with the conventional. However, the results of statistical tests on rice productivity of Area Method with the official method of CBS in Garut were not significantly different. This may imply that the sample selection method for measuring current productivity (CBS Method) can still be used, but it needs refinement to make the distribution of the samples stratified by altitude, stratification by type of irrigation and by the involvement of farmers who joined a government program.
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Sri Suryatmiati Prihandani, Masniari Poeloengan, Susan Maphilindawati Noor, Andriani
Balai Besar Penelitian Veteriner
Jl. RE. Martadinata No. 30 Bogor 16114
Telp. (0251) 8331048,8334456, Fax. (0251) 8336425
Garlic is widely used as a herbal medicine. In order to support the empirical use and improve its application in food safety, this study was conducted to test the antibacterial activity of garlic against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli, Salmonella typhimurium and Pseudomonas aeruginosa) bacteria. Garlic was used in the form of fine powder. Garlic powder then dissolved in sterile distilled water and squeezed to obtain garlic solution with a concentration of 50%, 25% and 12.5%. Antibacterial activity of garlic juice was tested by diffusion method using paper disc to determine diameter of bacterial growth inhibition zones. Screening results demonstrated that the chemical constituents of garlic powder were saponins, flavonoids and triterpenoids. Garlic powder has antibacterial activity to Gram-positive S. aureus and Gram-negative bacteria E. coli, S. typhimurium and P. aeruginosa. Garlic has antimicrobial potential and can be used as decontaminant against Escherichia coli to maintain quality of food safety such as meat.
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EFISIENSI EKONOMI RELATIF USAHATANI PADI SAWAH
DENGAN PENDEKATAN FUNGSI KEUNTUNGAN PADA PROGRAM SEKOLAH LAPANG-PENGELOLAAN TANAMAN TERPADU (SL-PTT)
DI PROVINSI BALI
Suharyanto, Ketut Mahaputra dan Nyoman Ngurah Arya
Balai Pengkajian Teknologi Pertanian (BPTP) Bali
Jl. Bypass Ngurah Rai, Pesanggaran, Denpasar 80222
Telp. (361) 720498, Fax. (361) 720498
E-mail : firstname.lastname@example.org
The research was conducted at three centers of rice production in the province of Bali i.e. regency of Tabanan, Gianyar and Buleleng in dry season of 2011 and wet season of 2011/2012. Data were collected through interviews using a structured questionnaire. The number of respondents consisted of 94 farmers non ICM-FFS and 122 farmers ICM-FFS with total respondents of 216 farmers. The distribution of sample respondents for each district were Tabanan district in subak Guama, Selanbawak village, Marga subdistrict as much as 78 respondents (44 ICM-FFS farmers and 34 farmer non ICM-FFS) ; Gianyar district in Subak Kumpul, Bona village, Blahbatuh subdisrict as much as 66 respondents (ICM-FFS 38 farmers and 28 farmer non ICM-FFS) and district Buleleng in subak Lebeha, Sangsit village, Sawan district as much as 72 respondent (40 farmers ICM-FFS dan 32 farmers non ICM-FFS). Relative economic efficiency and factors affecting low land rice farming profits were analyzed with Unit Output Price-Cobb Douglas Profit Function (UOP-CDPF) approach, which estimated using Ordinary Least Square (OLS). The result showed that the relative economic efficiency of ICM-FFS farmer was significantly higher than the non ICM-FFS farmers. Factors affecting low land rice farming profitability were price of N fertilizer, P fertilizer price, price of pesticides and wage of labor. The profitability of low land rice farming was higher on their own land, cultivated in the dry season and the farmers participating in the ICM-FFS.
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Sri Asih Rohmani1, Ernan Rustiadi2, Muhammad Firdaus2, Tahlim Sudaryanto2
Telp. (021) 7806202, Fax. (021) 7800644
1 Mahasiswa Pascasarjana S3 Program Studi PWD Institut Pertanian Bogor, Kampus IPB Darmaga Bogor 16880 2 Komisi Pembimbing Institut Pertanian Bogor, Kampus IPB Darmaga Bogor 16880
Regulation in the utilization of irrigation as Common Pool Resources-CPRs is really needed to overcome water limitation. Conducive conditions for the irrigation management on overall hydrological unit will be strengthened by the presence of social capital. Social capital plays a role in the mechanism of collective action formation on the management of CPRs whose existence depends on the people’s social and cultural environment. Trust will reduce transaction costs and facilitate the formation of social cooperation (network). Establishment of social bonds and norms in the groups become an effective instrument for resource sustainability. The study aims to analyze the role of social capital in the irrigation management and its impact to the farmers welfare. The study was conducted from April to August 2014 In Sukoharjo,with 320 respondents who represent the hydrological diversity unit of 12 districts in Sukoharjo. Using the two levels regression analysis, namely at the micro-level (farmers household) and meso-level (community) to see the effect of different variables: social capital of farmer households (Iik), social capital of community (Mk), area access (R), access and availability of water resources (Hdr), external environment (E), the collective action of irrigation management (TK), farmers satisfaction (Stfy), highly significant effect to the farmer household welfare (Sik) and community level (wk). Social capital of community, area access, access and availability of water resources have a significant effect to the society welfare (Wk). Therefore, the implementation of irrigation management should provide space for the establishment of social capital accompanied by policies harmonization between the formal regulations and informal rules in the form of the value system and culture that flourished in the society life.
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Adriani A1, M. Azrai2, W. B. Suwarno3, S. H. Sutjahjo2
1. Sekolah Tinggi Ilmu Pertanian YAPIM, Jl. Dr. Ratulangi No. Maros.
2. Balai Penelitian Tanaman Serealia, Jl. Dr. Ratulangi No. 274, Maros.
3. Institute Pertanian Bogor, Kampus Darmaga, Bogor
Telp. (0411) 371529-371016 , Fax. (0411) 371961
Development of maize varieties tolerant to drought is very important to extensification program in dry maginal lands, especially outside Java. The research objective was to evaluate the agronomic performance, genetic variabilities and heritabilities of hybrid maize top crosses at Probolinggo and Gowa during dry season. A randomized complete block design with two replications was applied to each location. The combined analysis of variance showed that hybrid x location interaction was significant for harvesting date, corncob length, 1000 grain weight, and highly significant for flowering date, leaf curling, husk cover aspect, corncob aspect, plant harvested, weight of corncob harvested and grain yield. The genetic variance was considered broad for grain yield, weight of corncob harvested, shalling percentage, number of grain rows per corncob, and corncob aspect. Heritability values in combined location analysis were high for shalling percentage; medium for grain yield, weight of corncob harvested, shalling number of grain rows per corncob and corncob aspect; but for the other characteristics they were low. Low selection intensity (≥ 10%) can be applied in this generation (S2), but strong selection intensity (≥20%) can be applied in the next generation (≥S3).
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Dwi Amiarsi, Abdullah Bin Arif, Agus Budiyanto dan Wahyu Diyono
Balai Besar Penelitian dan Pengembangan Pascapanen Pertanian
Jl. Tentara Pelajar No. 12A, Cimanggu, Bogor 16114
Telp. (0251) 8321762 , Fax. (0251) 8350920
E-mail : email@example.com
In an effort to reduce yield losses of melon especially during period of storage, distribution, and marketing, an effective treatment is needed. A common technique is to process melon into nata de melon. The aim of the research was to determine the physical and chemical quality of nata de melon during storage. The experiment was conducted in the Laboratory of the Indonesian Center for Agricultural Post Harvest Research and Development from July 2010 until February 2011. The design used was a completely randomized (CRD) factorial design, with two factors i.e. sucrose (6%; 8%; and 10%) and ammonium sulfate (0%, 0.4%, 0.6%, and 0.8%) with two replications. The data was analyzed using parametric and non-parametric analyses. The results showed that 8% sucrose treatment was more effective in increasing yield, thickness, fiber content, firmness and flavor than other sucrose concentrations in nata de melon production. Additional treatment of ammonium sulfate 0.8% was more effective in increasing yield, thickness, fiber content, and elasticity compared to other concentrations of ammonium sulfate in nata de melon production. In general, a treatment combination of 8% sucrose and 0.6% ammonium sulfate can produce nata de melon better. Processing into nata de melon may prolong shelf life and increase the added value of melon.
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SutoroBalai Besar Penelitian dan Pengembangan Bioteknologi dan Sumberdaya Genetik Pertanian
Jalan Tentara Pelajar No.3 A. Bogor 16111
Telp. (0251) 8337975 Fax. (0251) 8338820
Yield components of rice are characteristics that can contribute to crop productivity levels. Grain weight per panicle produced from primary, secondary, tertiary and quarter tiller are important yield components. Information on grain weight profile may be used as the basis for improving rice cultivation techniques. Therefore, profile of the filled and empty grain weight from each type of rice panicle need to be evaluated. Evaluation of the traits was done by conducting experiment in glass house in 2013 under randomized block design, 3 replications with 1 plant per pot. Seed weight of filled and empty grain of primary, secondary, tertiary and quarter of rice panicles were observed. Thirty genotypes of rice were grouped by 8 variables of filled and empty grain weight through cluster analysis, and the profile response of filled and empty grain weight was analyzed by profile analysis of multiple variables. Profile of grain weight per cluster showed that there was no cluster with high filled grain weight and low empty grain weight for all types of panicle. Among the clusters, there were genotypes with high filled grain weight and moderate empty grain weight from each type of panicles, and they could be considered as materials in rice breeding programs.
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Dhani GartinaSekretariat Badan Penelitian dan Pengembangan Pertanian
Jl. Ragunan No. 29 Jakarta 12540
Telp. (021) 7806202 Fax. (021) 7800644
E-mail : firstname.lastname@example.org
The Indonesian Agency for Agricultural Research and Development (IAARD) has the mandates of creating and disseminating agricultural technology innovations. The dissemination process of the agricultural technology innovations has not yet been maximized, and consequently not many people (farmers) can benefit from the R&D results. Technology innovation dissemination through a web portal has become IAARD’s choice. Problems related to dissemination through a web portal is in the method of presenting and managing the information in the web site. This research aimed to determine the benefits of dissemination of agricultural technology innovation through web site and policy strategies for the development of Balitbangtan web portal in the future. This research used a descriptive method to review the use of the web portal by the visitors, as a medium for the dissemination. The analysis included the number of visitors, profile of the visitors, information search and questions submitted by visitors. The study showed that the amount of information presented every year increased, but the number of visitors tended to decrease. The use of information given in the web portal was only dominated by students and private sectors. Java Island tended to dominate the origin of visitors. Packaging of the information of agricultural technology innovation can only be understood by researchers. Information support from researchers/extensions/engineers needs to be improved. A well-developed communication between the source of information and the user has not yet been established. The development of IAARD web portal needs to pay attention on philosophy, science, and art.
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