bluuebunny/crossref_metadata_2025 huggingface dataset:
Keragaman Karakter Morfologis Plasma Nutfah Spesies Padi Liar (Oryza spp.)
Authors: Suhartini Tintin
Published: February 2017

Wild rice spesies is relative
of cultivated rice and has many differences of its characteristic.
Morphological characteristic variation on crop can be used as
working assets in breeding program. Morphological
characterisation was conducted in three planting seasons in
2004 until 2005 at Indonesian Center for Agriculcural
Biotechnology Research and Development green house
consisted of 88 accessions of 18 wild rice spesies which
belonged to 4 groups of Oryza spp. (Oryza sativa, O.
officinalis, O. meyeriana, and O. ridleyi). The characteristic
observed were include 12 quantitative characters and 5
qualitative characters with 23 subcharacters. The wide of
quantitative morphological character variances were found in
plant high, tiller number, days of flower, total number grain/
panicle, awning length and stalk diameter, while the narrow
character variances were found in panicle length, 1.000 grains
weigth, grain shape, total internode and internode length. The
qualitative characters variance were found in grains, stalk,
ligule and leaf morphology, while panicle morphology of wild
rice species was dominated by open panicle type, erect panicle,
secondary branching were absent and well exserted.
Evaluasi Plasma Nutfah Kacang Tunggak (Vigna unguiculata L.) di Lahan Masam
Authors: Setyowati Mamik , Sutoro Sutoro
Published: February 2017

Plant genetic resources are as a source of genetic
variability and can be used to develop new varieties tolerant to
abiotic and biotic stress. Evaluation of cowpea germplasm to
abiotic stress, such as acidic soil has to be done to obtain
information of their tolerance. Cowpea germplasm collection
held in ICABIOGRAD was tested under acidic soil condition
in Jasinga, West Java and Bogor as control during March-June
2007. The criteria of tolerance to acidic soil was determined
when the grain yield of cowpea under acidic soil more than
80% compare to those yield under non acidic soil, while
susceptible to acidic soil when lower than 25%. Result of
experiment showed that accession of LO-3-38, Ces-41-6,
TVX-4661-01D-A, IT82-889-A, TV.3381-0-2j-B and Kacang
Tolo Loreng were tolerant to acidic soil, while Kacang Dadap
dan Kacang Tolo were susceptible. These accessions could be
used as parent materials for genetic study related to acidic soil
stress.
Isolasi Protoplas secara Enzimatis pada Tanaman Kecipir
Authors: Riyadi Imron
Published: February 2017

The
kind and concentration of enzyme that appropriate affected
isolation process and result of plant protoplast. The research
was conducted to enhance the protoplast rendements of winged
bean (Psophocarpus tetragonolobus L.) that was isolated by
Cellulase RS and Macerozyme R-10 enzyme as single and its
combination in a solution. Concentrations of enzyme used
were as much as 2.0-3.0% w/v for Cellulase RS and 0.4-0.6%
w/v for Macerozyme R-10. The solution containt mannitol 25
mM as an osmotycum. Isolation process was done on shaker
with 50 rpm (rotation per minute) speed in dark room for 5
hours. Results showed that C3 treatment (concentration of
Cellulase RS enzyme as much as 3.0% w/v) resulted
protoplasts density 3.49 x 105 protoplasts/g fresh weight of
hypocotyl and M2 treatment (concentration of Macerozyme R-
10 enzyme as much as 0.5% w/v) resulted 3.19 x 105
protoplasts/g. Whereas the best combined enzymes treatment
was achieved by C3M2 (combination between Cellulase RS as
much as 3.0% and Macerozyme R-10 enzyme as much as 0.5%
w/v) which resulted protoplasts density 4.94 x 105
protoplasts/g fresh weight of hypocotyl. The protoplast was
intact and viable.
Evaluasi Toleransi Plasma Nutfah Padi terhadap P Rendah di Tanah Sawah
Authors: Syarif Abd. Aziz , Sopandie Didy , Chozin M. A. , Idris K. , Suwarno Suwarno
Published: February 2017

A field experiment was conducted to assess
genotypic variability of tolerance and to identify tolerant
genotypes to low phosphorus (P) among rice germplasm on
lowland (paddy) rice field with low available and potential P
using strip plot design with three replications. P fertilization
(with and without added P) was assigned as horizontal factor
and 120 rice plant genotypes as vertical factor. Data on plant
height, tiller number, and shoot dryweight were collected. Low
P tolerance was judged by relative value i.e. observation value
at the plot without P treatment devided by the value at the plot
with P treatment. The judgement was determined based on
IRRI standard. Shoot P uptake of five tolerant and five
sensitive genotypes on no added P treatment was also
observed. The results showed that the germplasm exhibited
phenotypic and genotypic variability of low P tolerance. The
highest genotypic variability of tolerance was shown by the
value based on relative tillering number (28.7%), followed by
that of relative shoot dryweight (22,6%) and relative plant
height (7,6%). The highest broadsense heritability of tolerance
was shown by the value based on relative tiller number
(24.1%), followed by that of relative plant height (16.6%) and
relative shoot dry weight (15.0%) Fourteen genotypes were
identified as highly tolerant based on relative tiller number and
28 genotypes based on relative shoot dryweight. The tolerance
of genotype was attained by higher P uptake and higher
internal use efficiency.
Stabilitas dan Adaptabilitas Varietas Padi Merah Lokal Daerah Istimewa Yogyakarta
Authors: Kristamtini NFN
Published: February 2017

Stability and Adaptability of Local Varieties of Red Rice in Daerah Istimewa Yogyakarta. The objective of this research were to asses the yield performance, stability and adaptability of three genetic resources of local red rice in Yogyakarta Special Region. A randomized Block Design with three repicates was applied in all location. Three varieties were used i.e. Cempo merah, Saodah merah and Andel merah and were planted with changed plant system. Fertilizers were applied at rate 200 kg/ha urea, 50 kg/ha TSP and 25 kg/ha KCl. Yield stability was analyzed using the method of Eberhart and Russel (1966). The result indicated that the genetic resources test had different genetic potential. The yield of tested variety from 4.75-5.55 t/ha with an average of 5.08 t/ha. The variety of Cempo merah and Andel merah were under the average of yield stability and were only adapted to optimal growing environments. The stability of Saodah merah was higher than stability of average yield and was also well adapted to sub optimal environments.

 

Abstrak

Tujuan penelitian ialah menilai daya hasil, stabilitas, dan adaptabilitas tiga varietas padi merah lokal Provinsi Daerah Istimewa Yogyakarta (DIY) di Sleman dan Bantul. Rancangan percobaan di setiap lokasi ialah acak kelompok dengan tiga ulangan. Tiga varietas yang diuji ialah Cempo merah, Saodah Merah, dan Andel Merah, ditanam dengan sistem tanam pindah. Pemupukan dengan 200 kg/ha urea, 50 kg/ha TSP, dan 25 kg/ha KCl. Stabilitas hasil dianalisis dengan metode Eberhart dan Russe (1966). Hasil penelitian menunjukkan terdapat perbedaan potensi genetik dari sumber daya genetik yang diuji. Kisaran hasil dari ketiga varietas padi merah lokal yang diuji antara 4,75-5,55 t/ha dengan rata-rata 5,08 t/ha. Varietas padi merah Cempo Merah dan Andel Merah memiliki stabilitas di bawah rata-rata, dan berpeluang adaptif di lingkungan optimal, sedangkan varietas Saodah Merah memiliki stabilitas di atas rata-rata dan beradaptasi pada lingkungan kurang optimal.
Identifikasi Plasma Nutfah Kedelai Berumur Genjah dan Berdaya Hasil Tinggi
Authors: Mejaya I Made J. , Krisnawati Ayda , Kuswantoro Heru
Published: February 2017

Identification of Early Maturing and High Yielding Soybean Germplasm. Preference to early maturing soybeans is higher than the late ones, since early maturing soybean can improve planting index and able to escape from fail of harvest due to drought stress. To identify accessions of soybean germplasm which will be used as gene resources in developing of early maturing and high yielding varieties, a numbers of 203 soybean germplasm accessions were evaluated at Jambegede Research Station on dry season 2006. Observation primarily conducted on physiological maturity and flowering date. Beside, observation also conducted on plant height, number of branches, 100 seeds weight and seed yield. Result showed that accession of MLGG 0751 and MLGG 0753 identified having early maturity (70 days). The early maturing accessions had lower yield than the late maturing ones. There was no accession having both of early maturing and high yielding traits. Accessions of MLGG 0751 and MLGG 0753 can be used as gene resources in developing of early maturing varieties.

 

Abstrak

Preferensi terhadap kedelai berumur genjah lebih tinggi daripada berumur dalam karena kedelai berumur genjah dapat meningkatkan indeks pertanaman dan dapat menghindari kegagalan panen akibat cekaman kekeringan. Untuk mengidentifikasi aksesi plasma nutfah yang akan digunakan sebagai sumber gen dalam perakitan varietas kedelai berumur genjah dan berdaya hasil tinggi, sebanyak 203 aksesi plasma nutfah kedelai dievaluasi di Kebun Percobaan Jambegede pada musim kemarau 2006. Pengamatan terutama dilakukan terhadap umur masak fisiologis dan umur berbunga. Pengamatan juga dilakukan terhadap tinggi tanaman, jumlah cabang, bobot 100 biji, dan hasil biji tanaman. Hasil penelitian menunjukkan bahwa aksesi MLGG 0751 dan MLGG 0753 teridentifikasi berumur genjah (70 hari). Aksesi berumur genjah memiliki hasil biji lebih rendah daripada aksesi berumur dalam. Tidak diperoleh aksesi kedelai berumur genjah yang sekaligus berdaya hasil tinggi. Aksesi MLGG 0751 dan MLGG 0753 dapat digunakan sebagai sumber gen dalam perakitan varietas kedelai berumur genjah.
Keragaan Sifat Tahan Penyakit Blas dan Agronomi Populasi Silang Balik dan Haploid Ganda Turunan IR64 dan Oryza rufipogon
Authors: Utami Dwinita W. , Ambarwati A. Dinar , Apriana Aniversari , Sisharmini Atmitri , Hanarida Ida , Moeljopawiro Sugiono
Published: February 2017

Blast Resistance Performance of Promising Lines Derived from Backcross and Double Haploid Population Between IR64 and Oryza rufipogon. Developing blast resistance varieties with superior agronomical performance has been the one of the important priorities in rice breeding program. Based on the purpose of this study the double haploid and backcross populations were developed using the most popular cultivar IR64 as recurrent parent and wild rice species Oryza rufipogon (Acc. IRGC 105491) as blast resistance donor parent. This study was initiated to analyze the blast resistance and agronomical performance of double haploid populations (DH_I, DH_II and DH_III) and backcross populations (BC2, BC3, and BC5), based on the green house and field screening tests. The results of statistical analysis showed that the blast resistance performance of DH population were diverse among DH_I, DH_II and DH_III. The smallest diversity was on the DH_III population. The same results were also detected on BC populations. The smallest diversity was on BC5 population. The diversity comparison between DH and BC population showed that DH_III population had smaller variation than BC5. Indicated that DH_III population has the most fixed population. The agronomic performance evaluation of DH_III population selected lines showed that Bio1, Bio2, and Bio8 qualitified as the candidate of promising lines.

 

Abstrak

Perakitan varietas tahan blas sebagai galur harapan, merupakan salah satu prioritas dalam program pemuliaan padi. Dalam rangka mendukung program tersebut, telah dilakukan pembentukan populasi haploid ganda (HG) dan silang balik (BC) dengan IR64 sebagai tetua berulang dan Oryza rufipogon (No. aksesi IRGC 105491) sebagai tetua donor gen tahan penyakit blas. Penelitian ini bertujuan menganalisis keragaan tingkat ketahanan galur-galur haploid ganda (HG_I, HG_II, dan HG_III) dan galur-galur silang balik (BC2, BC3, dan BC5) terhadap penyakit blas di rumah kaca dan lapang, sehingga diperoleh kandidat galur harapan. Hasil pengujian beberapa populasi HG dan BC menunjukan bahwa terdapat variasi keragaan yang berbeda-beda. Variasi paling kecil terdapat pada populasi HG_III. Hasil yang sama juga diperoleh pada populasi silang balik (BC2-BC5). Variasi paling kecil terdapat pada populasi BC5. Bila dibandingkan antar populasi HG dan BC, tingkat variasi pada populasi HG_III lebih kecil dibandingkan dengan tingkat variasi pada populasi BC5. Hal ini menunjukkan bahwa tingkat homosigositas paling tinggi terdapat pada populasi HG_III. Berdasarkan evaluasi penampilan agronomis beberapa galur HG_III terpilih, diperoleh tiga galur kandidat galur harapan Bio1, Bio2, dan Bio8.
Genetic Diversity of Local Accessions of Dimocarpus longan Revealed By ISSR Markers
Authors: Mariana Baiq Dina , Sugiyatno A. , Supriyanto A.
Published: February 2017

Keragaman Genetik Aksesi Lenggkeng Lokal Dimocarpus longan Berdasarkan Penanda ISSR. Lengkeng telah berkembang di Indonesia, namun studi tentang tanaman ini belum banyak dilakukan. Studi untuk mengetahui keragaman genetik lengkeng lokal telah dilakukan di Balai Penelitian Tanaman Jeruk dan Buah Subtropika (Balitjestro) pada bulan Maret- April 2008. Penanda ISSR digunakan untuk mengidentifikasi keragaman genetik antar delapan genotipe lengkeng lokal yang telah dikoleksi oleh Balitjestro. Dendogram yang dibuat berdasarkan UPGMA menggunakan metode SAHN menunjukkan nilai kemiripan sebesar 0,34-0,86. Nilai kemiripan tertinggi diperoleh dari KL I dan KL II (0,86) dan nilai kemiripan terendah diperoleh dari KL I dan KL V/KL VI (0,34). Penanda ISSR dapat digunakan untuk mengidentifikasi lengkeng dan dapat memberikan informasi yang berguna untuk program pemuliaan lengkeng di kemudian hari.

 

Abstrak

There is no clear history of longan development in Indonesia even though it has developed well in Indonesia for many years. The study aimed at revealing genetic of diversity of local longan was done in Indonesian Citrus and Subtropical Research Institute (ICSFRI) from March to April 2008. ISSR markers were employed to identify the genetic variation among eight morphologically more or less alike accessions of longan ssp. Matrix data was counted and dendogram of samples was constructed using UPGMA and SAHN method. The cluster showed similarity value 0.34-0.86. The highest similarity value was observed between KL I and KL II (0.86) while the lowest one was obtained between KL I and KL V/KL VI (0.34). ISSR markers were able to identify the genetic diversity of longan and were helpful to provide information on genetic diversities especially for future breeding programs.
Karakteristik Fenotipe Itik Alabio (Anas platyrhynchos Borneo) di Kalimantan Selatan
Authors: Suryana NFN , Noor R. R. , Hardjosworo P. S. , Prasetyo L. H.
Published: February 2017

The Phenotypic Characteristics of Alabio Duck (Anas platyrhynchos Borneo) in South Kalimantan. A study on phenotypic characters was carried out to identify Alabio duck (Anas platyrhynchos Borneo) being kept by smallholder. This research was conducted at Hulu Sungai Selatan (HSS), Hulu Sungai Tengah (HST) and Hulu Sungai Utara (HSU), South Kalimantan from May until November 2009. Six hundred (75 males and 525 females) the duck used in this study was Alabio duck ranged from 5-5.5 months old. The observed parameters were plumage color, color feature, plumage shine, the color of bill, feet and shank. The results showed that the ducks from three locations (HSS, HST and HSU) have same color patterns. The dominant color of the male duck is grayish white, grayish, brownish grey, blue-green and black. Whereas the female ducks of brown spotted and blackish grey. Twinkle Alabio duck plumage on males and females have the highest percentage is the glint of silver and shiny blue-green. The color of bill, feet and shank of male and female ducks were pale yellow until bright orange.

 

Abstrak

Penelitian mengenai karakteristik fenotipe untuk mengindentifikasi itik alabio (Anas platyrhynchos Borneo) di peternakan rakyat telah dilakukan di Kabupaten Hulu Sungai Selatan (HSS), Hulu Sungai Tengah (HST), dan Hulu Sungai Utara (HSU), Kalimantan Selatan mulai Mei sampai November 2009. Materi yang digunakan adalah itik alabio dara dengan kisaran umur 5-5,5 bulan sebanyak 600, ekor terdiri atas 75 ekor jantan dan 525 betina. Parameter yang diamati meliputi warna bulu, pola dan kerlip bulu, warna paruh, kaki, dan shank. Hasil penelitian menunjukkan bahwa itik alabio dari Kabupaten HSS, HST, dan HSU memiliki karakter bulu yang sama. Warna bulu dominan pada itik alabio jantan maupun betina adalah putih keabuan, abu kehitaman, coklat keabuan, hijau kebiruan, dan hitam. Itik alabio betina memiliki corak bulu coklat totol-totol sedangkan itik jantan hitam dan polos. Kerlip bulu pada itik alabio jantan maupun betina adalah kerlip perak dan hijau kebiruan mengkilap. Warna paruh, kaki, dan shank itik alabio jantan maupun betina adalah kuning gading pucat sampai kuning gading tua.
Ketersediaan Tumbuhan Pakan dan Daya Dukung Habitat Rusa timorensis de Blainville, 1822 di Kawasan Hutan Penelitian Dramaga
Authors: Kwatrina Rozza T. , Takandjandji Mariana , Bismark M.
Published: February 2017

Feed Plant Availability and Carrying Capacity of Rusa timorensis deBlainville, 1822 at Dramaga Research Forest Area. The research was conducted to know potenstial feed plant availability and carrying capacity at Dramaga Research Forest Area. Data was collected by measuring feed plant productivity of 45 plots with size 1 m x 1 m, and consumption level of four rusa deer (Rusa timorensis de Blainville, 1822). The result showed that the highest feed plant productivity was 17,362.09 kg/ha/year, and the lowest was 502.22 kg/ha/year. Light intensity correlation (y. lux) with dry weight production in 20 days (x. kg/ha), is y = 4.64 x -15.46 (r = 0.95). Feed plant availability was 121,607.01 kg/year, while consupmtion level based on fresh weight was 6,4 kg/individual/day or 2,336 kg/individual/year. Carrying capacity on observation area (11.9 ha) was 52 individual/year or 3.13 individual/ha/year.

 

Abstrak

Penelitian bertujuan untuk mengetahui ketersediaan hijauan pakan potensial serta daya dukung kawasan Hutan Penelitian Dramaga sebagai sumber pakan rusa timor (Rusa timorensis de Blainville, 1822) di penangkaran. Pengukuran produktivitas hijauan pakan dilakukan dalam 45 plot contoh berukuran 1 m x 1 m, serta pengamatan tingkat konsumsi pakan terhadap empat individu rusa timor (R. timorensis) yang mewakili jantan, betina, kelas umur anak dan dewasa. Hasil penelitian menunjukkan bahwa produktivitas bobot basah hijauan pakan rusa timor (R. timorensis) di Hutan Penelitian Dramaga tertinggi adalah 17.362,09 kg/ha/tahun dan yang terendah sebesar 502,22 kg/ ha/tahun. Korelasi produktivitas hijauan dengan intensitas cahaya (y, lux) dengan produktivitas bobot kering dalam 20 hari (x, kg/ha) adalah y = 4,64 x -15,46 (r = 0,95). Ketersediaan pakan rata-rata pada Hutan Penelitian Dramaga sebesar 121.607,01 kg/tahun sedangkan tingkat konsumsi pakan rusa timor (R. timorensis) berdasarkan bobot basah pakan adalah 6,4 kg/individu/hari atau 2.336 kg/individu/tahun. Pada areal yang diamati seluas 11,9 ha maka daya dukung habitat adalah 52 individu/tahun atau rata-rata sebesar 3,13 individu/ha/tahun.
Keragaman Plankton dan Kualitas Perairan di Hutan Mangrove
Authors: Heriyanto N. M.
Published: February 2017

Plankton Diversity and Water Quality in Mangrove Forest. N.M. Heriyanto. Study the diversity of plankton and water quality in mangrove forests Blanakan was done in Subang, West Java and Cilacap, Central Java, in September 2010. Study used purposive random sampling method and the data were analyzed in the laboratory. The results showed five that different types of phytoplankton were found and a type of zooplankton that were Fragillaria sp., Navicula sp., Nitzschia sp., Surirella sp., Tabellaria sp., and one type of zooplankton Nauplius sp. Abundance of species (Di) Nitzschia sp. were found most dominant in the amount of 33.33% at the location of Cilacap and 25% in Blanakan, abundance of Fragillaria sp. 31.25% was in Blanakan and 11.11% in Cilacap. Plankton species diversity (H’) was generally low, the index of similarity (E) in the waters of relatively the same in both places. Mangrove forest at study site was dominated by Avicenia marina L. (Blanakan) and Rhizophora mucronata Blume (Cilacap). Heavy metal content of Hg in Cilacap was 7 times greater than Blanakan waters, the concentration of Zn in the same place two times larger, and cyanide (Cn) 4 times larger. Cilacap detergent in the water waw 12 times greater than these Blanakan waters. Water quality in industrial areas are generally worse than those in mangrove degraded areas.

 

Abstrak

Penelitian keragaman plankton dan kualitas perairan di hutan mangrove dilakukan di Blanakan Subang, Jawa Barat dan Cilacap, Jawa Tengah, pada September 2010. Penelitian menggunakan metode purposif random sampling dan data yang diperoleh dianalisis di laboratorium. Pada penelitian ditemukan lima jenis fitoplankton (Fragillaria sp., Navicula sp., Nitzschia sp., Surirella sp., Tabellaria sp.) dan satu jenis zooplankton (Nauplius sp). Kelimpahan jenis (Di) Nitzschia sp. paling dominan, yaitu 33% di Cilacap dan 25% di Blanakan, kelimpahan Fragillaria sp. 31% di Blanakan dan 11% di Cilacap. Keragaman jenis plankton (H’) umumnya rendah, indeks kesamaan (E) di perairan di kedua tempat relatif sama. Hutan mangrove di lokasi penelitian didominasi oleh jenis Avicenia marina L. (Blanakan) dan Rhizophora mucronata Blume (Cilacap). Kandungan logam berat Hg di Cilacap tujuh kali lebih besar dari perairan Blanakan. Konsentrasi Zn di tempat yang sama dua kali lebih besar, dan sianida (Cn) empat kali lebih besar. Deterjen di perairan Cilacap lebih besar 12 kali dibandingkan dengan perairan Blanakan. Kualitas perairan di kawasan industri umumnya lebih buruk dibandingkan dengan kawasan bermangrove terdegradasi.
Seleksi Beberapa Klon Kentang (Solanum tuberosum L.) dari Hasil Persilangan untuk Karakter Daya Hasil Tinggi pada Ekosistem Dataran Tinggi di Ciwidey
Authors: Kusmana NFN
Published: February 2017

Selection of Several Potato Clones (Solanum tuberosum L.) Derived from Crosses for High Yielding on Highland of Ciwidey. Kusmana. Granola and Atlantic are two dominant varieties grown by farmers. So far no other alternative superior varieties that can be used by farmers to develop potato cultivation in the field. The objective of the research was to identify potato clones that were highest yielding in the highland Ciwidey and the potential for multy location evaluation. The experiment was conducted in Ciwidey, Bandung District at altitude 1.400 m above sea level. A total of 41 advanced breeding materials and variety was planted. A Randomized Complete Block Design with three replications was used and an experimental unit consisted of 10 hill/plot. The result indicated that high yielding clones (up to 35.6 t/ha) were obtained clones 29, (43.8 t/ha), 11 (38.2 t/ha), 31 (37.3 t/ha), 13 (36 t/ha) and 35 (35.6 t/ha). Whereas, the variety of Granola as a comparison was yielded only 23.4 t/ha. Clones 9, 22 and 35 were suitable for potato chips. This study indicated that among the genotipes tested, there were superior clones were promissing for potato cultivation in indonesia.

 

Abstrak

Areal pertanaman kentang cenderung semakin meningkat namun hasil yang dicapai petani masih relatif rendah sehingga diperlukan upaya pemuliaan untuk memperbaiki varietas yang ada. Tujuan penelitian ialah mendapatkan informasi tentang daya hasil 41 klon kentang yang berpotensi hasil tinggi pada ekosistem dataran tinggi Ciwidey. Penelitian dilaksanakan di Kecamatan Ciwidey, Kabupaten Bandung elevasi 1.400 m di atas permukaan laut. Rancangan Percobaan yang digunakan ialah Rancangan Acak Kelompok dengan tiga ulangan. Jumlah klon yang diuji meliputi 41 klon harapan, termasuk varietas pembanding Granola. Populasi tanaman per plot terdiri atas 10 individu tanaman. Hasil pengamatan menunjukkan bahwa hasil kentang tertinggi diperoleh pada klon 29 (43,8 t/ha), 11 (38,2 t/ha), 31 (37,3 t/ha), 13 (36 t/ha), dan 35 (35,6 t/ha), sementara hasil varietas pembanding Granola hanya 23,4 t/ha. Klon 9, 22 dan 35 berpotensi sebagai bahan baku industri kripik kentang. Kegiatan ini menghasilkan klon-klon kentang unggul sebagai calon varietas baru yang memberikan kontribusi terhadap peningkatan produksi kentang di Indonesia.
Uji Ketahanan Galur-galur Harapan Padi terhadap Penyakit Hawar Daun Bakteri (Xanthomonas oryzae pv. oryzae) Ras III, IV, dan VIII
Authors: Yuriyah Siti , Utami Dwinita W. , Hanarida Ida
Published: February 2017

Resistance Test of Promising Rice Lines Against Bacterial Leaf Blight (Xanthomonas oryzae pv. oryzae) Race III, IV, and VIII. Siti Yuriyah, Dwinita W. Utami, and Ida Hanarida. Development of new superior rice varieties resistant to bacterial leaf blight (BLB) has been conducted through utilizing of a wide rice germplasm, from crossing between IR64 and Oryza rufipogon. The aim of this study is to get promising rice lines that resistant to BLB race III, IV, and VIII. The experiments were conducted at greenhouse and Laboratory of Molecular Biology, ICABIOGRAD Bogor, using of 13 promising rice lines that have different levels of resistance to inoculum from pure cultures of BLB race III, IV and VIII. Of these 13 rice lines, six lines showed resistance to race III (Bio5-AC-Blas/BLB-03, Bio62-AC-Blas/BLB-03, Bio111-BC-PIR7, Bio129-BC-WBC, Bio148-Mamol, and Bio154-Mamol-Dro), one line showed resistance to race IV (Bio154-Mamol-Dro), and one line showed resistance to race VIII (Bio5-AC-Blas/BLB-03), with severity rate 1.8 to 8.1%. Of these improve lines Bio5-AC-Blas/BLB-3 and Bio 111-BCPir- 7, were released as new rice varieties, namely Inpari HDB and Inpari Blas, respectively.

 

Abstrak

Perakitan varietas padi unggul baru tahan terhadap hawar daun bakteri (HDB) terus dilakukan melalui pemanfaatan sumber daya genetik yang luas. Saat ini telah dirakit galur-galur unggul yang berasal dari persilangan IR64 dan padi liar Rupifogon. Penelitian ini bertujuan untuk mengevaluasi ketahanan galur harapan padi terhadap penyakit HDB dari Ras III, IV, dan VIII. Percobaan dilakukan di rumah kaca dan Laboratorium Kelti Biologi Molekuler, BB Biogen, Bogor. Materi genetik yang digunakan adalah 13 galur harapan padi dan biakan murni dari Ras III, IV, dan VIII. Metode inokulasi dengan pengguntingan dan skoring ketahanan dilakukan sesuai dengan sistem penilaian dari Yashitola et al. (1997). Dari 13 galur padi harapan yang diuji, diperoleh enam galur tahan terhadap Ras III (Bio5-AC-Blas/BLB-03, Bio62-AC-Blas/BLB-03, Bio111- BC-PIR7, Bio129-BC-WBC, Bio148-Mamol-Dro, dan Bio154-Mamol-Dro), satu galur tahan terhadap Ras IV (Bio154-Mamol-Dro) dan satu galur tahan terhadap Ras VIII (Bio5-AC-Blas/BLB-03), dengan tingkat keparahan sebesar 1,8-8,1%. Dalam perkembangannya, dua dari galur harapan, yaitu galur Bio5-AC-Blas/BLB-03 dan Bio111-BC-Pir-7 disetujui untuk dilepas sebagai varietas Inpari HDB dan Inpari Blas.
Penampilan Genotipe Jagung Berumur Genjah pada Pemupukan N Dosis Tinggi dan Rendah di Lahan Sawah setelah Padi di Sulawesi Selatan
Authors: Ruchjaniningsih NFN , Thamrin Muh.
Published: February 2017

Genotype Performance of Early Maturity Maize with N High and Low Dosage Fertilization in Irrigated Land After Rice Planting in South Sulawesi. Ruchjaniningsih and Muh. Thamrin. To reduce the negative impact of excessive fertilizer N use efficiency of N needs to be done, especially on maize that much need N. N use efficiency can be improved through the establishment of adaptive varieties of maize N fertilization is low, it is necessary for the characterization of the plant as a basis for screening genotypes. Some strains of maize have been evaluated wetland in Bontomanai, Bantaeng district, South Sulawesi, on May to December 2009, the result of the appearance of phenotypic characters and yield components. The experiments were arranged in a randomized block design with a factorial treatment genotype A (X01904 ), B (X02804 ), C (X02904 ), D (X03404), E (X03604), F (Bima- 1), G (Lamuru), H (Gumarang), and local B yellow for comparison with N fertilization (high and low dose) repeated three times. The results showed that fertilizer N 400 kg/ha had a greater impact on the character of the observed fertilization N 200 kg/ha. Genotypes that have high yield potential in rice fields is Lamuru cultivars (13.44 t/ha) and X01904 (13.33 t/ha). All genotypes tested from early maturing (76-84 dap). Genotype X01904, X02804, X02904, X03404, and Bima-1 excel in the characters observed compared to check varieties. Check varieties (local) is superior genotypes were tested on plant height and ear height layout.

 

Abstrak

Untuk mengurangi dampak negatif pemupukan N yang berlebihan perlu dilakukan efisiensi penggunaan N, terutama pada tanaman jagung yang banyak membutuhkan N. Efisiensi penggunaan N dapat ditingkatkan melalui pembentukan varietas jagung adaptif pemupukan N rendah, untuk itu perlu dilakukan karakterisasi tanaman sebagai dasar skrining genotipe. Beberapa galur jagung telah dievaluasi pada lahan sawah di Bontomanai, Kabupaten Bantaeng, Sulawesi Selatan, pada Mei- Desember 2009, untuk melihat penampilan fenotipik karakter hasil dan komponen hasil. Percobaan ditata dalam rancangan acak kelompok pola faktorial dengan perlakuan genotipe A (X01904), B (X02804), C (X02904), D (X03404), E(X03604), F (Bima-1), G (Lamuru), H (Gumarang), dan lokal B Kuning sebagai pembanding dengan pemupukan N (dosis tinggi dan rendah) diulang tiga kali. Hasil penelitian menunjukkan bahwa pemupukan N 400 kg/ha berpengaruh lebih baik terhadap karakter yang diamati dari pemupukan N 200 kg/ha. Genotipe yang mempunyai potensi hasil tinggi di lahan sawah adalah kultivar Lamuru (13,44 t/ha) dan X01904 (13,33 t/ha). Semua genotipe yang diuji berumur genjah (76-84 hst). Genotipe X01904, X02804, X02904, X03404, dan Bima-1 unggul dalam karakter-karakter yang diamati dibandingkan dengan varietas pembanding. Varietas pembanding (lokal) lebih unggul dibandingkan dengan genotipe yang diuji pada karakter tinggi tanaman dan tinggi letak tongkol.
Isolasi, Identifikasi, dan Karakterisasi Cendawan Blas Pyricularia oryzae Hasil Rejuvenasi
Authors: Lestari Puji , Priyatno Tri P. , Enggraini Wening , Reflinur NFN , Suryadi Yadi
Published: February 2017

Isolation, Identificaton, and Charaterization of Blast Fungus Pyricularia oryzae Derived from Rejuvenation. Puji Lestari, Wawan, Tri P. Priyatno, Wening Enggarini, Reflinur, and Yadi Suryadi. Blast disease caused by Pyricularia oryzae (Po) is one of the important diseases on rice crop in Indonesia. This study was aimed at obtaining blast fungus pathogen rejuvenated from preserved seed origin, agar medium and rice leaf tissue. In addition, we identified blast isolates for long-term storage collection, and characterized isolates towards their specific locus of genes virulence. The results revealed that 22.7% isolates stored in agar media produced a typical mycelium of Po. The specificity of total genomic DNA banding pattern of isolates which were analyzed using specific primers encoding virulence genes of Cut1, Erg2, and Pwl2, showed six haplotypes consist of B-001 (1 isolate), C-011 (1 isolate), D-111 (8 isolate), F-110 (1 isolate), G-100 (3 isolate), and H-101 (2 isolate). None of haplotypes A-000 and E-010 were found among the isolates studied. In regard to its pathogenicity, the majority of Po fungal isolates had Cut1, Pwl2, and Erg2 genes. Among the total isolates of the Po fungus, the greatest proportion of genes were Pwl2 (87.5%) followed by Cut1 (75%) and Erg2 (62.4%) genes.

 

Abstrak

Penyakit blas yang disebabkan oleh cendawan Pyricularia oryzae (Po) merupakan salah satu penyakit penting pada pertanaman padi di Indonesia. Penelitian ini bertujuan untuk mendapatkan cendawan patogen blas yang berasal dari hasil rejuvenasi simpanan benih, media agar, dan jaringan daun padi. Selain itu, identifikasi koleksi isolat blas yang ditujukan untuk penyimpanan jangka panjang dan karakterisasi kespesifikan tiap isolat terhadap lokus spesifik gen virulensi. Hasil pengujian menunjukkan 22,7% isolat yang tersimpan dalam media agar masih menunjukkan tipikal miselium Po. Kespesifikan pola pita DNA genomik total isolat yang dianalisis berdasarkan primer penyandi gen spesifik virulensi Cut1, Erg2, dan Pwl2, diperoleh sebanyak enam haplotipe meliputi B-001 (1 isolat), C-011 (1 isolat), D-111 (8 isolat), F-110 (1 isolat), G-100 (3 isolat), dan H-101 (2 isolat). Tidak ditemukan haplotipe A-000 dan E-010 pada isolat Po yang dianalisis. Dalam hubungannnya dengan patogenisitas, mayoritas cendawan Po mempunyai gen Cut1, Pwl2, dan Erg2. Di antara total isolat cendawan Po, gen yang paling besar ditemukan proporsinya adalah gen Pwl2 (87,5%) diikuti Cut1 (75%) dan Erg2 (62,4%).
Keragaman Jenis Tumbuhan di Cagar Alam Gunung Celering
Authors: Kalima Titi , Heriyanto N. M.
Published: February 2017

Plant Diversity in the Mount Celering Nature Reserve. Titi Kalima and Nur M. Heriyanto. Study of the plant species diversity in the Nature Reserve of Mount Celering (CAGC) Jepara, Central Java, was carried out from April to May 2008, with aimed to get information about plant diversity after natural disasters and encroachment. The method used was the checkered path with length of 500 m and width of 20 m, made of three lines cut slopes. The research was found 32 species, 29 genera, and 21 families. Tree level was dominated by Hibiscus macrophyllus Roxb. (IVI = 26.75%), Artocarpus elasticus Blume (IVI = 26.53%), and Alseodaphne umbelliflora Blume. (IVI = 22.75%). Saplings by Syzygium acuminatissimum (Blume) A.DC. (IVI = 23.86%), Dipterocarpus hasseltii Blume (IVI = 18.71%), and Artocarpus elasticus Blume (IVI = 18.52%). Six species of endangered trees were Alstonia scholaris (L.) R.Br., Alstonia angustifolia Wall, D. hasseltii Blume, Parkia javanica (Lamk.) Merr., Stelechocarpus burahol Hk.f.et Th., Sterculia cordata Blume.

 

Abstrak

Penelitian keragaman jenis tumbuhan di Cagar Alam Gunung Celering (CAGC) Jepara, Jawa Tengah, dilakukan bulan April sampai dengan Mei 2008 dengan tujuan untuk mendapatkan informasi tentang keragaman jenis tumbuhan pasca bencana alam dan perambahan. Metode yang digunakan adalah jalur berpetak dengan panjang 500 m dan lebar 20 m, dibuat tiga jalur memotong lereng. Dari hasil penelitian ditemukan 32 jenis, 29 genera, dan 21 famili. Tingkat pohon didominasi Hibiscus macrophyllus Roxb. (INP = 26,75%), Artocarpus elasticus Blume (INP = 26,53%), dan Alseodaphne umbelliflora Blume. (INP = 22,75%). Anakan pohon oleh Syzygium acuminatissimum (Blume) A.DC. (INP = 23,86%), Dipterocarpus hasseltii Blume (INP = 18,71%), dan Artocarpus elasticus Blume (INP = 18,52%). Enam jenis pohon yang termasuk katagori kritis dan terancam punah yaitu Alstonia scholaris (L.) R.Br., Alstonia angustifolia Wall, D. hasseltii Blume, Parkia javanica (Lamk.) Merr., Stelechocarpus burahol Hk.f.et Th., Sterculia cordata Blume.
Pengaruh Iradiasi Ultraviolet terhadap Multiplikasi Tunas Aksiler dan Kadar Klorofil Anyelir (Dianthus caryophyllus L.)
Authors: Afza Higa , Iriawati NFN
Published: February 2017

Ultraviolet (UV) is one of the lights spectrum that causes plant cell to damage. The use of ultraviolet irradiation in combination with tissue culture techniques has not been widely used in somaclonal variation method for carnation breeding, whereas the source of ultraviolet irradiation is more easily obtained compared to other sources of irradiation such as gamma rays, x-rays and neutron rays. The purpose of this study was to determine effect of ultraviolet irradiation on the multiplication of axillary shoot in carnation. Explants of internode stem of carnation were grown in multiplication medium Murashige Skoog (MS) consisted of 10-7 M NAA and 5.10-6 M BAP. After four times subculture, the culture bottles were exposed to ultraviolet light C with some variation of irradiation time in combination with storage in light or dark. The results showed that ultraviolet light can reduce the number of shoots formed, shoot length and chlorophyll content of carnation. Based on the results obtained, ultraviolet radiation affected the organs of plants that were formed, but did not cause meristem activity to a standstil.

 

Abstrak

Sinar ultraviolet (UV) merupakan salah satu sinar gelombang pendek yang dapat menyebabkan kerusakan sel tumbuhan. Penggunaan iradiasi ultraviolet yang dikombinasikan dengan teknik kultur jaringan belum banyak digunakan untuk menginduksi keragaman somaklonal dalam pemuliaan anyelir. Padahal sumber iradiasi ultraviolet lebih mudah diperoleh dibanding dengan sumber iradiasi lain, seperti sinar gamma, sinar x, dan sinar neutron. Tujuan penelitian ini ialah mengamati pengaruh iradiasi ultraviolet terhadap multiplikasi tunas aksiler anyelir. Eksplan buku batang anyelir ditanam pada medium multiplikasi, terdiri atas medium Murashige Skoog (MS) ditambah dengan 10-7 M NAA dan 5.10-6 M BAP. Setelah dilakukan empat kali subkultur, botol kultur dipaparkan pada lampu ultraviolet C dengan beberapa variasi lama waktu penyinaran yang dikombinasikan dengan penyimpanan di tempat terang atau gelap. Sinar ultraviolet ternyata dapat menurunkan panjang ruas, jumlah tunas aksiler yang terbentuk dan kadar klorofil anyelir. Hasil penelitian menunjukkan bahwa iradiasi ultraviolet berpengaruh terhadap organ tanaman yang sudah terbentuk, tetapi tidak menghentikan aktivitas jaringan meristem.
Pengaruh Pengunjung terhadap Perilaku dan Pola Konsumsi Rusa Timor (Rusa timorensis de Blainville 1822) di Penangkaran Hutan Penelitian Dramaga
Authors: Amiati Dewi Ayu , Masyud Burhanuddin , Garsetiasih R.
Published: February 2017

Timor deer (Rusa timorensis de Blainville 1822) known as java deers are native Indonesian fauna, mostly found ex situ. Deers in captivity can be an attraction object of tourism. The research was conducted from March to April 2013 at Dramaga Research Forest, Situ Gede Village, Bogor City. Dramaga research forest was build on 1956 as an arboretum with 127 tree species. The purpose of this research was to identify deer feed given by visitors in captivity, changes in behavior and consumption patterns. The feed given by visitors to deer was about 89% convolvulus, 8% carrots, 2% leaves, and 1% wild grasses. The feed meets the basic needs of a deer with convolvulus containing 8,93% protein and carrots containing 19,99% protein. The results of statistical test by chi-square indicate that no real influence on the behavior and consumption patterns of the deers in captivity, but nominally show some changes decrease of persentation. Consumption pattern and social behaviour increased, while resting, locomotion, and ruminational behaviours decreased.

 

Abstrak

Rusa timor (Rusa timorensis de Blainville 1822) merupakan rusa asli Indonesia yang populasinya banyak ditemukan di luar habitat aslinya, khususnya di penangkaran. Rusa dapat menjadi daya tarik wisata di penangkaran, karena tampilannya yang menarik. Penelitian dilakukan pada bulan Maret sampai April 2013 di Hutan Penelitian (HP) Dramaga, Kelurahan Situ Gede, Kecamatan Bogor Barat, Kota Bogor. Hutan Penelitian Dramaga dibangun tahun 1956 dengan tujuan sebagai koleksi tanaman dengan 127 jenis pohon. Tujuan penelitian ini adalah mengidentifikasi pakan rusa yang diberikan pengunjung di penangkaran Dramaga, perubahan perilaku dan pola konsumsi. Metode pengumpulan data melalui pengamatan langsung di lapang dengan focal animal sampling dan metode pengambilan data one-zero sampling terhadap perilaku dan pola konsumsi rusa, wawancara dengan pengunjung serta studi pustaka. Hasil penelitian menunjukkan bahwa jenis pakan yang diberikan oleh pengunjung meliputi 89% kangkung, 8% wortel, 2% daun-daun, dan 1% rumput lapang. Jenis pakan memiliki nilai gizi yang dapat mencukupi kebutuhan rusa di penangkaran. Hasil uji statistik menunjukkan bahwa pemberian pakan oleh pengunjung tidak berpengaruh terhadap perubahan perilaku dan pola konsumsi harian rusa. Tetapi secara nominal menunjukkan adanya perubahan perilaku makan dan sosial yang meningkat, perilaku istirahat, lokomosi, dan mamah biak yang menurun. Perubahan tersebut berpengaruh pada kegiatan biologis rusa, dan diduga dapat mengganggu kesehatan.
Balai Pengkajian Teknologi Pertanian Sulawesi Selatan, Jl. Perintis Kemerdekaan Km. 17,5 Makassar, Sulawesi Selatan, Indonesia
Authors: Limbongan Yusuf , Djufry Fadjry
Published: February 2017

Local rice of Toraja Plateau, such as Pare Bau&rsquo;, Pare Kombong, Pare Lallodo, Pare Ambo&rsquo;, and Pare Lea, is one source of organic food which may improve national food security in the future. In order to determine the character and superiority of these five accsessions, characterization, and observation had been conducted in North Toraja and Tana Toraja district in 2011&ndash;2013. Observation was carried out on five genotypes of local superior rice and one genotype as check variety (Cisantana variety). The experiment used randomized block design that was repeated five times, therefore 30 plots were observed. The parameters of observations consist of the growth components, yield components, productivity, nutrient content, flavor and aroma, and resistance to pests and diseases. The results showed that the five accessions have morphological difference, sharp and distinctive aroma, delicious/fluffier taste, resistance to pest, good adaptability to the plateau (700&ndash;2.000 m above sea level), high protein content, low fiber and glucose content, high vitamin B content, and delicious rice. Heritability values for all components of quantitative trait were ranged from moderate to high.

Abstrak

Padi lokal dataran tinggi di Tana Toraja, antara lain Pare Bau’, Pare Kombong, Pare Lallodo, Pare Ambo’, dan Pare Lea, merupakan salah satu sumber pangan organik dalam rangka meningkatkan ketahanan pangan nasional pada masa yang akan datang. Untuk mengetahui karakter dan keunggulannya, telah dilakukan karakterisasi dan observasi kelima aksesi tersebut di Kabupaten Toraja Utara dan Tana Toraja tahun 2011–2013. Observasi dilakukan terhadap lima genotipe padi unggul lokal serta satu genotipe pembanding, yaitu varietas Cisantana. Penelitian menggunakan Rancangan Acak Kelompok yang diulang 5 kali sehingga terdapat 30 petak observasi. Pengamatan dilakukan pada komponen pertumbuhan, komponen hasil, produktivitas, kandungan gizi, rasa, dan aroma, ketahanan terhadap hama dan penyakit. Hasil penelitian menunjukkan bahwa kelima aksesi berbeda secara morfologi, memiliki aroma yang tajam dan khas, rasa nasi yang enak/pulen, tahan terhadap OPT, daya adaptasinya baik pada dataran tinggi (700–2.000 m dpl), kandungan protein tinggi, kandungan serat dan glukosa rendah, kandungan vitamin B tinggi, dan rasa nasi enak/enak sekali. Nilai heritabilitas untuk semua komponen kuantitatif berkisar antara kriteria sedang sampai tinggi.
Keterbatasan Fungsi Keuntungan Cobb-Douglas dalam Pendugaan Elastisitas Permintaan Input, (Suatu Tinjauan atas Model dan Penerapannya di Sektor Pertanian)
Authors: Suryana Achmad
Published: February 2017

Abstrak

Penggunaan fungsi keuntungan Cobb-Douglas sebagai salah satu metoda kuantitatif telah dikenal para peneliti ekonomi pertanian. Di dalam menduga elastisitas permintaan input, ternyata fungsi keuntungan Cobb-Douglas ini mempunyai keterbatasan. Hasil dugaan fungsi ini akan selalu memberikan elastisitas permintaan input atas harga sendiri dan harga output yang elastis, elastisitas silang yang selalu menunjukkan adanya hubungan komplementer antar input, serta besaran elastisitas silang terhadap harga input dan input tetap yang berpola. Tulisan ini menunjukkan keterbatasan-keterbatasan yang melekat pada fungsi Cobb-Douglas ini secara matematik disertai bukti-bukti empirik.
Pendugaan Skala Usaha Usahatani Padi Sawah dengan Fungsi Keuntungan
Authors: Rachman Handewi P.S.
Published: February 2017

Abstrak

Penelitian ini menduga kondisi skala usaha usahatani padi sawah dalam jangka pendek dengan model fungsi keuntungan Cobb-Douglas. Luas lahan garapan diperlakukan sebagai input tetap. Data yang digunakan adalah data input output usahatani dari penelitian resurvey yang dilakukan oleh Studi Dinamika Pedesaan (SDP) pada enam desa di wilayah DAS Cimanuk, Jawa Barat. Analisa dilakukan pada musim tanam MH 1982/1983. Hasil pendugaan menunjukkan bahwa usahatani dengan luas garapan rata-rata 0,433 ha masih belum memberikan tingkat keuntungan maksimum kepada petani pengelolanya dan skala usaha masih berada pada kondisi "increasing returns to scale". Hasil analisa juga menunjukkan bahwa harga pupuk urea, nilai obat-obatan, luas lahan garapan dan biaya tetap (lain-lain) mempunyai pengaruh yang nyata (α = 0,01) terhadap keuntungan aktual usahatani padi.
Analisa Permintaan Waktu Luang Keluarga Petani PIR-Karet Nes I Talang Jaya Sumatera Selatan
Authors: Simatupang Pantjar , Ariani Mewa
Published: February 2017

Abstrak

Analisa curahan tenaga kerja dapat dilakukan dengan menganalisa permintaan waktu luang keluarga. Secara teoritis yang berguna langsung bagi seseorang adalah waktu luang dan barang yang dikonsumsi. Pencurahan tenaga kerja hanyalah untuk memperoleh pendapatan yang selanjutnya dipergunakan untuk membeli barang-barang konsumsi. Tujuan penelitian ini untuk melihat perilaku permintaan waktu luang keluarga petani PIR, yang analisisnya dititik-beratkan pada peranan karakteristik keluarga berdasarkan teori perilaku konsumen. Metode yang digunakan adalah fungsi kepuasan Stone-Geary. Hasil analisis menunjukkan bahwa seseorang yang berpendapatan tinggi, cenderung menggunakan waktu luang besar (curahan tenaga kerja rendah). Curahan tenaga kerja juga dipengaruhi oleh umur kepala keluarga, jumlah anggota keluarga dan jurnlah anak berumur dibawah lima tahun. Salah satu usaha yang dapat ditempuh untuk merangsang petani muda lebih giat bekerja adalah dengan meningkatkan ketrampilan berusahatani melalui pendidikan umum dan penyuluhan usahatani.
Pengaruh Rasio Karet Alam Terdeproteinisasi dengan Monomer Vinil terhadap Karakteristik Karet Alam Termoplastik
Authors: Puspitasari Santi , Budianto Emil , Maspanger Dadi Rusadi
Published: February 2017

Chemical modification of natural rubber latex by emulsion graft copolymerization with thermoplastic monomer produces thermoplastic natural rubber (TPNR). Ratio composition of natural rubber to thermoplastic monomer determines the TPNR properties. TPNR has good mechanical properties of natural rubber and high processability of plastic material thus enhancing its application in industry. The research, which was conducted at research laboratory of Indonesian Rubber Research Institute, from June to December 2014, aimed to study the effect of the ratio of deproteinized natural rubber (DPNR) latex to vinyl monomer (VM: methyl methacrylate and styrene) on physical and mechanical properties of TPNR produced from batch graft copolymerization. Batch graft copolymerization was conducted at certain ratios of DPNR latex with methyl methacrylate and styrene (70:30; 60:40; and 50:50) at (65°C, 5 hours), and subsequently at (70°C, 1 hour). The result showed that batch technique tend to cause the formation of homopolymer vinyl which also affected the TPNR properties. Visually, the TPNR had white color, hard and brittle texture yet easier to process as shown by low time and energy consumption during compounding. The ratio of DPNR to VM at 70:30 was regarded as the optimum ratio for its balanced properties between elastomeric material of DPNR and thermoplastic material of VM.