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INDONESIA
Jurnal AgroBiogen
Published by Kementerian Pertanian
ISSN : 19071094     EISSN : 25491547     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal AgroBiogen memuat artikel primer dan sekunder hasil penelitian bioteknologi dan sumberdaya genetik tanaman, serangga, dan mikroba pertanian. Jurnal ini diterbitkan tiga kali setahun pada bulan April, Agustus dan Oktober oleh Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumberdaya Genetik Pertanian
Arjuna Subject : -
Articles 7 Documents
 1 
Search results for , issue "Vol 4, No 2 (2008): Oktober" : 7 Documents clear
Identifikasi Marka Polimorfik untuk Pemuliaan Padi Toleran Defisiensi Fosfor Joko Prasetiyono; Hajrial Aswidinoor; Sugiono Moeljopawiro; Didy Sopandie; Masdiar Bustamam
Jurnal AgroBiogen Vol 4, No 2 (2008): Oktober
Publisher : Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jbio.v4n2.2008.p51-58

Abstract

Information on polymorphismsamong rice parents are very important in ricebreeding for tolerance to phosphorus defficiency. A studywas conducted at the Molecular Biology Laboratory,Indonesian Center Agricultural Biotechnology and GeneticResources (ICABIOGRAD) from October 2006 to July 2007 toidentify polymorphism markers from 6 rice genotypes. Therice genotypes, i.e., Dodokan, Situ Bagendit, Batur, Kasalath,NIL-C443, dan K36-5-1-1 were analyzed for polymorphismsusing 496 SSR markers, which cover the rice genomes.Seven of the 496 markers were used as foreground andrecombinant selection markers, and the rests (489 markers)were used as background selection markers. PCR amplificationswere separated on a 5% polyacrylamide gel andcolored by the silver staining method. Three different markersamong the seven foreground and recombinant selectionmarkers were selected from each crossing, which aretightly linked with Pup1 gene and have a distance less than 5cM. These markers are Dodokan vs Kasalath (RM277, SSR3,RM519), Dodokan vs NIL-C443 (RM277, SSR3, RM519),Dodokan vs K36-5-1-1 (RM277, SSR3, RM519), Situ Bagenditvs Kasalath (RM28102, SSR3, RM519), Situ Bagendit vs NILC443(RM28102, SSR3, RM519), Situ Bagendit vs K36-5-1-1(RM511, SSR3, RM519), Batur vs Kasalath (RM277, RM1261,RM519), Batur vs NIL-C443 (RM277, RM1261, RM519), andBatur vs K36-5-1-1 (RM28102, SSR3). Variations in backgroundselection primers were found in each chromosomeand in each parent combinations. Primers on chromosome4, 5, and 12 showed the lowest polymorphisms; moreprimers are needed for these chromosomes.
Keragaman Genetik Inbrida Jagung QPM dan Normal Berbasis Marka Mikrosatelit dan Hubungannya dengan Penampilan Hibrida Marcia B. Pabendon; M. Azrai; M. J. Mejaya; Sutrisno Sutrisno
Jurnal AgroBiogen Vol 4, No 2 (2008): Oktober
Publisher : Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jbio.v4n2.2008.p77-82

Abstract

Information on genetic divergence ofinbred lines and performance of the hybrids developed fromthe lines is a great value in maize hybrid program. A studywas conducted to evaluate genetic diversity of six QPM andfive normal maize inbred lines, to determine the relationshipbetween genetic distance based on SSR markers and thegrain yield of single cross hybrid, and to get informationpromising hybrid from the single cross of QPM hybrid.Twenty four polymorphic primers that covered the 10 maizechromosomes were used to fingerprint the lines, detectingin 94 alleles (average of 3.9 and a range of 2-6 alleles perlocus). Genetic divergences were determined using theJaccard’s similarity coefficient, and a dendrogram wasconstructed using the UPGMA. Cluster analysis divided theinbreds into two clusters that were confirmed by principalcoordinate analysis. Two promising QPM hybrids that arecrossed from different heterotic group were found. Theestimated value of simple correlations (r) of GDs with thegain yield of single cross hybrid was negatif (-0.07). There isa need to conduct more field trials to obtain more accuratecorrelations, particularly in a practical utility for predictingmaize hybrid performance for grain yield.
Analisis Sekuen Gen Tubulin-β Isotipe 1 Cacing Haemonchus contortus Isolat Resisten terhadap Benzimidazole pada Domba di Indonesia Dyah Haryuningtyas; Wayan T. Artama
Jurnal AgroBiogen Vol 4, No 2 (2008): Oktober
Publisher : Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jbio.v4n2.2008.p45-50

Abstract

Benzimidazole (BZ)resistance to gastrointestinal nematodes in small ruminants(sheep and goat) has become a significant problem worldwide.Evidences of anthelmintic resistance to albendazole inIndonesia has been reported from some government ownedfarms in West Java, Central Java, and Yogyakarta. Previousstudy on the sheep parasite H. contortus had shown that theBZ resistance was related to selection for individuals in apopulation possesing a spesific β-tubulin isotype 1 gene. Thestudy is aimed to determine mutation on coding region ofcentral part of β-tubulin isotype 1 gene of H. contortus resistantstrain from Indonesia. Seven H. contortus worms wereisolated from four BZ resistant sheep from two governmentfarms (SPTD Trijaya, Kuningan, West Java, and UPTDPelayanan Kesehatan Hewan, Bantul, Yogyakarta), and froma BZ susceptible sheep from Cicurug, Sukabumi, West Java.DNA was extracted individually from female H. contortusworms. A fragment of 520 bp β-tubulin isotype 1 gene exon3, 4, 5 was amplified using the PCR technique and thensequenced. The results showed that a single mutationoccurred in codon 200 (from phenilalanine to tyrosine) hadcaused benzimidazole resistance in H. contortus from SPTDTrijaya, Kuningan, West Java. Mutation in β-tubulin isotype 1gene of H. contortus from UPTD Pelayanan KesehatanHewan, Yogyakarta, occurred in codon 198 (from glutamateto glycine), codon 201 (from cystein to stop codon), andcodon 202 (from isoleucyne to stop codon).
ULASAN Masalah Pencoklatan pada Kultur Jaringan Sri Hutami
Jurnal AgroBiogen Vol 4, No 2 (2008): Oktober
Publisher : Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jbio.v4n2.2008.p83-88

Abstract

Severaltropical plant species contain high concentrations of phenoliccompounds, which become oxidised when their cellsare wounded or when the plant parts become senescences.In tissue culture, the phenolic compounds usually leach intothe medium from the cut surfaces of explants. The phenoliccompounds caused the culture medium turns to dark brownin colour due to oxidation. This is detrimental to the culture,because it causes the isolated tissue fails to grow. Thebrowning of tissue culture and the medium can often beprevented by one of the several different approaches, suchas by removing the phenolic compounds produced, modifyingthe redox potential, inactivating phenolase enzymes,reducing phenolase activity and substrate availability, as wellas pre-treatments by soaking and preconditioning on a basalmedium.
Interaksi AtMEK1-EXGT pada Arabidopsis thaliana pada Saat Terjadi Pelukaan Toto Hadiarto; Fumio Nanba
Jurnal AgroBiogen Vol 4, No 2 (2008): Oktober
Publisher : Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jbio.v4n2.2008.p59-64

Abstract

Proteininteractions occur within cellular level of stimulated plantcells to relay signals from receptors to production of response.AtMEK1-EXGT interaction had been detected in nontreatedArabidopsis. In this research, interaction betweenAtMEK1, a mitogen-activated protein kinase kinase ofArabidopsis thaliana, and EXGT, endoxyloglucan transferase,after the plant was wounded was examined usingco-immunoprecipitation and in vitro phosphorylation assay.The results demonstrated that EXGT interact with AtMEK1soon after and 10 minutes after wounding. In addition,AtMEK1 phosphorylation activity increased when increasedlevel of EXGT was incorporated into the reaction mixture.These indicate that EXGT amplifies wound-caused phosphorylationactivity of AtMEK1. The results elucidate part ofthe AtMEKK1-AtMEK1-AtMPK4 cascade which is stimulatedby wounding. How the complex interaction between EXGT,AtMEK1 and AtMPK4 fits within the cascade is remained tobe uncovered.
Pengaruh Sumber Karbon dan Kondisi Inkubasi terhadap Pertumbuhan Kultur In Vitro Purwoceng (Pimpinella pruatjan Molk.) Roostika, Ika; Purnamaningsih, Ragapadmi; Noviati, Arief V.
Jurnal AgroBiogen Vol 4, No 2 (2008): Oktober
Publisher : Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jbio.v4n2.2008.p65-69

Abstract

Pruatjan (Pimpinella pruatjan Molk.) is an Indonesianmedicinal plant which is categorized as endangeredplant and included in Appendix I based on CITES. The invitro conservation techniques have been studied. However,the storage period was very short (4 months) when plantgrowth retardant and media dilution were applied. Besidethat, the residual effect of growth retardant was strongenough so that it needed more than 4 months for recovery.Thus, the use of certain carbon source may prolong thepreservation period with shorter time for recovery. Theobjective of the study was to know the effects of carbonsources (sucrose and mannitol) and culture conditions (cultureroom and growth chamber) to the growth of pruatjancultures. This application was hoped to prolong preservationperiod of pruatjan longer than 4 months and to cut therecovery period after presservation. The study was conductedat Tissue Culture Laboratory in Indonesian Center forAgricultural Biotechnology and Genetic Resources Researchand Development from August 2006 to July 2007. Theactivities included propagation of in vitro shoot grown invitro as explants source, preservation of in vitro shoots ofpruatjan, and regeneration of the cultures after preservation.The experiment was designed as factorial in RandomizedCompletely Block Design with 6 replications. The DKW basalmedia containing 1 ppm BA, 0.2 ppm thidiazuron, and 100ppm arginine were supplemented with mannitol or sucroseat the level of 1, 2, 3, 4, and 5%. The observed variables weretotal number of leaves, number of shoot, and number of wiltleaves. The result revealed that pruatjan cultures could bestored longer than 4 months. Generally, the effect ofmannitol or sucrose was more dominant than that of culturescondition. The mannitol (1-5%) strongly inhibited thegrowth of pruatjan cultures so that only a few culturessurvived at 7 months preservation period and needed about1 month for recovery. On the contrary, the effect of sucrose(at the same level) was better than mannitol. The 2.5%sucrose optimally inhibited pruatjan cultures. At that condition,the cultures could be stored for 10 months withoutmorphological changes so that they could recover spontaneously.
Keragaman Genetik Isolat Cendawan Pyricularia oryzae Menggunakan Primer Pot-2 (Rep-PCR) Tasliah Tasliah; Reflinur Reflinur; Masdiar Bustamam
Jurnal AgroBiogen Vol 4, No 2 (2008): Oktober
Publisher : Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumber Daya Genetik Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/jbio.v4n2.2008.p70-76

Abstract

Rice blast (Pyriculariaoryzae) is one of the most important diseases of rice. It canbe very destructive in the field, when the environmentalconditions are favourable. Information on genetic diversity ofthis pathogen could assist plant breeders in determiningstrategy for a successful control of the disease. This studywas conducted to analyze genetic diversity in P. oryzaeisolates by a pair of Pot-2 primers using the rep-PCRtechnique. These primers were designed from a transposonelement of the entire blast fungus genomic DNA. DNAsamples were extracted from 212 isolates of P. oryzaecollected from two endemic areas of the disease inIndonesia, i.e., Tamanbogo, Lampung, and Sukabumi, WestJava, as well as from some non-endemic areas in NorthSumatra and West Sumatra). Results of the study indicatedthat the 212 isolates could clustered into 21 haplotypes. Themost dominant haplotypes as indicated by their highestfrequency of haplotypes were haplotype Pot 2-019 (54.46%)followed by haplotype Pot 2-021 (14.73%) and haplotipe Pot2-016 (6.25%). Regardless of origins of the P. oryzae isolates,we found 6 haplotypes from Tamanbogo (out of 117samples), 13 haplotypes from Sukabumi (out of 77 samples),and 11 haplotypes from North Sumatra and West Sumatra(out of 18 isolates). It seems that genetic diversity of the P.oryzae isolates was not affected by the total number ofsamples/isolates, but rather by place of the origin and ricegenotypes from which the isolates were collected.

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