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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Fitopatologi Indonesia BIOTROPIA - The Southeast Asian Journal of Tropical Biology

Nurita Toruan-Mathius

Plant Production and Biotechnology Div., TCLZ and Biotechnologi Lab., PT SMART Tbk, Jl. Raya Pajajaran 78 F-6, Bogor

Author-ID : 404928

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Immunology & microbiology Medicine & Pharmacology Veterinary

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Articles

Formulasi Trichoderma dan Mikoriza Arbuskular untuk Pengendalian Penyakit Busuk Pangkal Batang pada Kelapa Sawit: Formulation of Trichoderma sp. and Arbuscular Mycorrhiza to Control Basal Stem Rot Disease in Oil Palm Sinthya E, Hana Christine; Khairani, Hagia Sophia; Sinaga, Meity Suradji; Toruan-Mathius, Nurita; Nawangsih, Abjad Asih
Jurnal Fitopatologi Indonesia Vol. 20 No. 6 (2024): November 2024 - IN PROGRESS
Publisher : The Indonesian Phytopathological Society (Perhimpunan Fitopatologi Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14692/jfi.20.6.286-294

Basal stem rot (G. boninense) is one of the most important diseases in oil palm. As biocontrol agents, Trichoderma spp. and arbuscular mycorrhizal fungi (AMF) have been reported to inhibit the growth of G. boninense. Nevertheless, the effectiveness of those biocontrol agents is unstable due to less appropriate formulation and application. Biofungicide formulation affects the effectiveness in controlling plant diseases, the ability to proliferate and survive in the environment, the period of storage, and reduces preparation time and application cost. This research aimed to develop the formulation of Trichoderma spp., and AMF to control G. boninense. Trichoderma spp. The active ingredient has been mass-produced in millet formulated with carriers: T1 using rice bran, while T3 was combined with rice bran and oil palm empty fruit bunches (EFB) compost. AMF active ingredient has been mass producted in shorgum root, and formulated with carrier, CMA1 using zeolite. While, CMA2 combined zeolite with EFB compost. AMF applications were on seed planting, Trichoderma spp. applications were on three months seedlings. Plant material used was DXP (76 × 36.11), which is susceptible to G. boninense. Disease progress was observed from latent period, disease incidence, disease severity, infection rate (r), area under disease progress curve (AUDPC), and the AMF-Trichoderma association with plant oil palm root. CMA2 and T3 formulation showed the best result to reduce disease severity and insidence. Therefore, CMA2 + T3 was the best combination of formulation for controlling oil palm basal stem rot disease based on disease progress.

Karakterisasi Morfologi Bunga dan Buah Abnormal Kelapa Sawit (Elaeis guineensis Jacq) Hasil Kultur Jaringan Hetharie, Helen; Wattimena, Gustav A.; Thenawidjaya S., Maggy; Aswidinnoor, Hajrial; Toruan-Mathius, Nurita; Ginting, Gale
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 35 No. 1 (2007): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Tissue culture-derived plants of oil palm (Elaeis guineensis Jacq) can produce abnormal female dan male flowers, especially female, which develop into mantled fruit. This abnormality have caused yield lost up to 40%. The objectives of this research were to study the stages of flower development in which the abnormality started to appear, to characterize the morphology of the abnormal flower and fruit, and to determine the degree of abnormality. Plant materials used in this research were MK152, MK 176, MK 203, MK163, MK104, MK 212 and MK 209 clones obtained from the collection of "Badan Pengkajian dan Penerapan Teknologi (BPPT)" in Ciampea, Bogor. Characterization of abnormality at the flowering stage was conducted based on morphological performance at several stages of flower development, while the degree of abnormality at fruiting stage was determined based on the condition of carpel, mesocarp and seed. Normal flower and fruit of the same clone were used as the control. The results showed that the abnormality started at primordial stage of flower organ formation. Supplement carpel was found surrounding gynoecium for the abnormal female flower, which was composed of three to six carpels present at separate whorl of flower. Abnormal male flower had no additional whorl of flower, instead stamens were converted into carpel-like structures. In this case, number of carpels structure depends on the degree of abnormality. There were three levels of abnormality, i.e. light abnormality (AbR), heavy abnormality (AbB) and severe abnormality (AbSB). The severe abnormal fruit was seedless, with soft mesocarp (AbSB1) and woody mesocarp (AbSB2). Key words : oil palm, mantled fruit, supplement carpel, flower whorl, tissue culture

Keragaman Genetik Kelapa Sawit (Elaeis guineensis Jacq.) Asal Angola Menggunakan Marka SSR Sayekti, Urip; Widyastuti, Utut; Toruan-Mathius, Nurita
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 43 No. 2 (2015): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTEffort to increase productivity and other elite characters in Indonesia oil palm breeding program is facing a problem because of the narrow genetic diversity. To broaden the genetic diversity, germplasm exploration has been done in Angola, Central Africa. The objective of this research was to assess the genetic diversity and population structure of Angola originated oil palm germplasm based on 20 SSR markers. The plant materials used were 27 accessions consisted of 136 palms planted in Riau, Sumatera. The DNA was isolated and amplified using PCR. Phylogeny analysis was constructed using Unrooted Neighbor-Joining by DARwin software 6.0.8. The result showed that polymorphic information content (PIC) value is 0.55 (0.17 to 0.75 for each locus) with 102 total number of alleles. Genetic diversity between individuals was higher compared to the genetic diversity within accessions or regions and between accessions or regions. Phylogenetic analysis of 27 accessions showed that accessions were divided into three main groups. Every group containing individuals originated from 5 spatial distribution regions. Principal coordinates analysis (PCoA) showed that accessions were distributed in one structure. Using more primers and samples to get more representative data is recommended for the following research.Keywords: allele, locus, germplasm, molecular marker, polymorphic

Identification of Gene Related to Hard Bunch Phenotype in Oil Palm (Elaeis guineensis Jacq.) ,, Roberdi; ,, Sobir; Yahya, Sudirman; Toruan-Mathius, Nurita; Liwang, Tony
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 43 No. 2 (2015): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

ABSTRACTMolecular genetic analysis of hard bunch phenomenon in oil palm was done in order to elucidate the role of genetic factor underlying hard bunch in oil palm plantation. The aim of this study was to identify the AFLP primer combination that co-segregates with hard bunch phenotype related gene in oil palm. Molecular analysis was done by bulk segregant analysis approach. DNA was isolated from leaves of the normal and hard bunch palm. DNA from ten individual palms from each category were pooled and used as a template. A total of 56 AFLP primer combinations were selected for selection of polymorphic primer, and as a result it was found that 22 AFLP primer combinations (39.28%) were polymorphic. A total of 48 individual of palm DNA containing 24 individual for each group were further genotyped by those 22 polymorphic markers. Of these, one AFLP primer combination (E-ACC/M-CTG) was obtained as a co-segregated marker that distinguished the hard bunch DNA from the normal one. Based on the analysis of the target sequence aligned to the oil palm DNA sequences available in database, we found that our sequence has similarity with Ty-1 copia retrotransposon. This sequence distribute in all 16 linkage group of oil palm genome.Keywords: abnormal fruits, AFLP, oil palm, Ty-1 copia retrotransposon

GENETIC VARIATIONS AMONG AQUILARIA SPECIES AND GYRINOPS VERSTEEGII USING AMPLIFIED FRAGMENT LENGTH POLYMORPHISM MARKERS TORUAN-MATHIUS, NURITA; RAHMAWATI, DEWI; ANIDAH
BIOTROPIA Vol. 16 No. 2 (2009)
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2009.16.2.59

Aquilaria sp Thymelaeaceae is the most valuable non wood production of forestry plant in Indonesia It produces a fragrant resin when subjected to fungal attack and has been traded internationally known as gaharu Knowledge of genetic diversity and relationship among species and genus is important for breeding purposes and species conservation In this study genetic variability of six Aquilaria species were analyzed using the AmplifiedFragment Length Polymorphism AFLP markers Ten AFLP primer combinations amplified 1353 DNA fragments ranging in size from100 to 350 bp of which 1285 95 of them were polymorphic Genetic similarities among Aquilaria sp consisted of A malaccensis A beccariana A microcarpa and A crassna ranged from 6390 to 7200 based on Dice coefficient The dendrogram derived by the unweighted pair group method with arithmetic mean of germplasm analysiswere clustered into two main groups Hence a genetic variation among species is quiet high Bootstrap values for the groups supported 70 of the cluster using a linear relationship equation of r 0724 P 00001 was observedbetween known pedigrees and AFLPderived genetic similarity for 136 pairwise comparisons of Aquilaria species For example A malacensis and A microcarpa have the highest genetic similarity 7200 compared with another Aquilaria species Primer pairs EACGMCTA produced a specific fragment for A beccariana 850 bp A crasna 550 bp 180 bp and 140 bp A malaccencis 1500 bp A microcarpa 250 bp and Gyrinops versteegii 150 bp Primer pairs EACGMCAA produced a specific DNA fragment only for A beccariana 1500 bp and 100 bp Primer pairs EACCMCAC also produced only specific fragment for A crassna 1500 bp Study showed the usefulness of AFLP analysis in Aquilaria sp and its potential application for breeding and species conservation Further molecular diversity estimated in the present study combined with the datasets on other morphologicalagronomic traits will be useful for selecting the appropriate accessions for plant improvement through conventional and molecular breeding approaches.Key words Gaharu Aquilaria sp Gyrinops sp genetic diversity molecular marker amplifiedfragment length polymorphism AFLP

Co-Authors ANIDAH DEWI RAHMAWATI Gale Ginting Gustav A. Wattimena Hagia Sophia Khairani HAJRIAL ASWIDINNOOR Helen Hetharie Maggy Thenawidjaya S. Meity Suradji Sinaga Nawangsih, Abjad Asih Roberdi ,, Roberdi Sinthya E, Hana Christine Sobir Sobir Sudirman Yahya Tony Liwang Urip Sayekti UTUT WIDYASTUTI

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