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INDONESIA
BERITA BIOLOGI
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : -     EISSN : -     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology
Arjuna Subject : -
Articles 28 Documents
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Search results for , issue "Vol 11, No 3 (2012)" : 28 Documents clear
INFEKTIFITAS Spodoptera exigua NUCLEOPOLYHEDROVIRUS (SeNPV) YANG DIPERKAYA DENGAN BAHAN PENGAKTIF TERHADAP LARVA Spodoptera exigua Huebner Samsudin Samsudin; Teguh Santoso
BERITA BIOLOGI Vol 11, No 3 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v11i3.499

Abstract

Spodoptera exigua Huebner nucleopolyhedrovirus (SeNPV) is an entomophathogenic virus of onion caterpillar S. exigua larvae commonly used as bioinsecticide. The major limitations of SeNPV for biocontrol of onion caterpillar is it requires long time for the virus to kill the insect host. This research was aimed to find out the material as phagostimulant to increase the infectivity of SeNPV and to determine the optimum boric acid concentration as an enhancer for SeNPV activities. This research was conducted at laboratory using Cipanas isolate of SeNPV and third instar of S. exigua larvae. Phagostimulant used are 5% ofsucrose, soybean sauces, molases, sugar and turmeric filtrate,and the enhancers used are 0,1%, 1%, 5% and 10% concentration of boric acid. This result indicated that soybean sauces and sucrose increased S. exigua consumption and enhanced the infectivity of SeNPV. When mixed with polyhedra of SeNPV, 1% to 5% sucrose significantly increased S. exigua consumption and increased the infectivity of SeNPV, while 10% sucrose tended to decrease the feeding of S. exigua. Boric acid enhanced the infectivity of SeNPV. However, the increase of boric acid concentration should be restricted maximum at 5% for avoiding the negative impacts on the environment.
KORELASI ANTAR-KARAKTER DAN SIDIK LINTAS ANTARA KOMPONEN HASIL DENGAN HASIL BIJI KACANG HIJAU (Vigna radiata (L) Wilczek) Lukman Hakim; Suyamto Suyamto
BERITA BIOLOGI Vol 11, No 3 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v11i3.504

Abstract

A total of 10 mungbean (Vigna radiata (L.) Wilczek) genotipes including check variety (Vima) were evaluated on rainfed after rice at Ngale Experimental Farm, Ngawi, East Java during early dry season of 2010. The experiment was conducted in randomized complete block design with three replications. Plot size was 4 m x 5 m, plant spacing was 40 cm x 20 cm, each hill contained two plants. A correlated and path coefficient analyses were used in order to determine the association among characters and quantify the direct and indirect effects of agronomy traits on seed yield. The study has identified 2 promising lines, i.e. MMC342d-3-4 and MMC342d-kp-3-3 produced the highest yield of 2.2 t and 2.0 t/ha respectively and had good adaptation on rainfed. Two varieties (Kutilang and Kenari) having large seed size (>7.5g/100 seed). Therefore, these varieties can be used as source of parents on breeding program. Among the agronomic characters, number of pods per plant, number of seeds per pod and seed size were positively and significantly correlated with grain yield. The direct effect of number of pods per plant, number of seed per pod and seed size to grain yield as indicated by path coefficient were the highest, while other causal effects to grain yield were small or negative. Based on both analyses, mungbean genotipes with high grain yield should have high number of pods per plant, number of seeds per pod and large seed size. Therefore, number of pods per plant, number of seeds per pod and seed size can be suggested for selection criteria in selecting high yield mungbean genotipes on rainfed.
PENGARUH CENDAWAN Trichoderma sp. TERHADAP TANAMAN TOMAT PADA TANAH ANDISOL Subhan Subhan; Nono Sutrisno; Rahmat Sutarya
BERITA BIOLOGI Vol 11, No 3 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v11i3.509

Abstract

An experiment to determine the effect of Trichoderma fungus application in tomato grown in andisol soil, was conducted at IVEGRI’s (Indonesian Vegetable Research Institute) Experimental Garden in Lembang, Bandung, West Java (1250 m asl) from April 2011 until July 10 2011. Two treatments factos i.e. factor (1) Trichoderma application (without and using Trichoderma 10 fungi per plot and factor (2) NPK (15-15-15) fertilizer rate (0, 250, 500, 750 and 1000 kg NPK (15-15-15)/ha) were arranged in randomized block design with 4 replications. The results showed that although P uptake in tomato increased with Trichoderma sp. application, in general Trichoderma sp. application did not significantly affected several growth parameters and yield component of tomato. Significant effect of Trichoderma sp. application was only increased in total plant dry weight at 63 days after planting. The use of NPK (15-15-15) fertilizer 250 kg NPK/ha increased significantly on total plant dry weight and yield component such as total fruit weight per plot and fruit number per plot (15 m ).
PENGARUH TUMPANGSARI TERHADAP PERTUMBUHAN DAN HASIL PANEN JARAK PAGAR (Jatropha curcas L.) HASIL REHABILITASI Sri Mulyaningsih; Budi Hariyono
BERITA BIOLOGI Vol 11, No 3 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v11i3.500

Abstract

A research to study the effect of intercropping on rehabilitated of physic nut (Jatropha curcas L.) was conducted in Muktiharjo Research Station, Pati, Central of Java, from January to December 2010. Plant materials were physic nut rehabilitated by grafting of main branch with IP-2A (1 year old) and intercrops (peanut, soybean, mungbean and sesame). The experiment arranged in randomized block design with 6 replications. The treatments were: 1) intercropping peanut + physic nut, 2) intercropping soybean + physic nut, 3) intercropping mungbean + physic nut, 4) intercropping sesame + physic nut, and 5) physic nut monoculture. Plot size was 8 m x 8 m, plant distance of physic nut 2 m x 2 m, and plant distance for peanut, soybean and mungbean were 25 cm x 25 cm and sesame was 50 cm x 25 cm. The result showed that jatropha seed yield on intercropping physic nut with soybean (980.05 kg/ha) and mungbean (974.22 kg/ha) were not significantly different from physic nut monoculture (1,094.84 kg/ha). Crop that appropriate for intercropped with rehabilitated physic nut (second year) were soybean and mungbean.
ADAPTASI AKSESI KENTANG HITAM {Plectranthus rotundifolius (Poir.) Spreng} TERHADAP BERBAGAI INTENSITAS CAHAYA Ning Wikan Utami; Albert Husein Wawo
BERITA BIOLOGI Vol 11, No 3 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v11i3.505

Abstract

Light is one of limiting factors for plant growth, including black potatoes {Plectranthus rotundifolius (Poir.) Spreng}. This species is a potential carbohydrates source that has been utilized in some areas as an alternative food.Plant adaptation to light intensity is controlled by genetic potential and environment.The aim of this research is to obtain information about the light intensity that suitable for growing some black potato accessions and mutants. The study was compiled using Nested Randomized Complete Block Design.Five accessions (Solo, Sangian, Nganjuk, 6G and 25G) planted in 3 degrees of light intensity i.e. full light (N0), 70% (N1), 50% (N2) and 25% (N3).The results revealed that light greatly affect the growth and production of 5 accessions of black potatoes. Five accessions tend to tolerant for decreasing light intensity until 70%. Decreasing in growth and yield characters significantly occurred in 25% of light intensity than control. Solo and Sangian stable to 4 light intensity treatments.
PENGARUH PEMBERIAN BAHAN ORGANIK TERHADAP DAYA SIMPAN BENIH KEDELAI {Glycine max (L.) Merr.} Sudirman Umar
BERITA BIOLOGI Vol 11, No 3 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v11i3.510

Abstract

Fertilization with organic and inorganic fertilizers increase the availability of nutrients in the soil and improve soil physical and chemical properties, The nutrient must fulfill crop requirement regarding to its effect to seed quality. The object of experiment was to study the effect of a combination organic fertilizer and inorganic fertilizer to resilience of soybean {Glycine max (L.) Merr.} seed var. Anjasmoro. Storage of seeds, were conducted in the Post Harvest Laboratory of Balai Penelitian Pertanian Lahan Rawa-Balittra (Indonesian Swampland Agriculture Institute), Banjarbaru from October 2009 until April 2010. The experiment was designed in completely randomized with 4 replications. Seed water content, seed germination, vigor index, electrical conductivity and seedling development were observed. The results showed that during storage, water content of seed increased 3-4% and limit the water content of seeds was still able to be maintained at <13%. Organic matter and NPK fertilizer declined vigor and germination of seed. Vigor is still above 70% and germination as high as >77%; As lower as seed germination generate as higher as electrical conductivity and lower the seedling dry weight.
NILAI KEPENTINGAN BUDAYA KEANEKARAGAMAN JENIS TUMBUHAN BERGUNADI HUTAN DATARAN RENDAH BODOGOL, SUKABUMI, JAWA BARAT Mulyati Rahayu; Y Purwanto; Siti Susiarti
BERITA BIOLOGI Vol 11, No 3 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v11i3.501

Abstract

Index Cultural Significance (ICS) of useful plants diversity in ethnobotanical study is an importance step, such as activity strategy which have subsystem aspect and traditional classification. Ethnobotany study in Bodogol lowland forest, West Java recorded more than 200 useful plants species within 3 times visits in 2009 to 2010. Data collection was done by “walk in the wood”,interview method, direct observation in permanent plots and estimation of Index Cultural Significance (ICS) form.Result of the study indicated that indigenous people around Bodogol lowland forest has good knowledge about biodiversity around them. Based on interview method, this study showed that indexs cultural significance of useful plants in this area was in the range of 0.5 and 86. Kawung {Arenga pinnata (Wurmb) Merr.} has highest ICS whilst Acung leutik (Arisaema filiforme Bl.) is the lowest.
REGENERASI TUNAS DARI KALUS YANG TELAH DIBERI PERLAKUAN IRADIASI PADA PADI VARIETAS FATMAWATI Rossa Yunita; Endang G Lestari; Iswari S Dewi
BERITA BIOLOGI Vol 11, No 3 (2012)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v11i3.506

Abstract

Gamma ray mutative induction for increasing genetic variation has been applied for plant prime variety engineering. The materials are derrived from seed organ, shoot and calli. Calli is a group of actively dividing cell and have not been organized to form plant. The benefit of using calli explant is that the gamma ray could directly shot to DNA in the nuclear cell in such a way that there is higher opportunity for genetic change to occur. The problema of using calli explant are the difficulties in regenerating the calli into shoots, due to the deformation as a result of radiation process. Therefore, this research is aimed at obtaining the appropriate media formulation for shoot regeneration from Fatmawati-rice calli which has been irradiated with gamma ray. The reseach was conducted in BB-Biogen laboratory consisting of three experiments, such as : (1) calli iradiation with the dosage of 0; 5; 10; 15; 20; 25; 30; 35; 40; 45; 50; 55 and 60 Gy, (2) shoot regeneration at the MS + BA (0, 1, dan 3 mg/l) + IAA (0 dan 0,8 mg/l) media, and BA (0, 1, and 3 mg/l) + zeatin ( 0; 0,1; 0,2 and 0,3 mg/l) + IAA 0,8 mg/l and (3) Shoot induction at MS + IBA (0, 1, 2 and 3 mg/l) media. The result shows that the range of LD50 was obtained at the dosage of 30 Gy, the most apropriate media for shoot regeneration is MS + BA 3 mg/l + IAA 0,8 + zeatin 0,1 mg/l and media for root induction is IBA 1 mg/l.

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