Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
ISSN : 20852916     EISSN : 23373652
urnal Agronomi Indonesia, sebelumnya bernama Buletin Agronomi, terbit sejak 1962, diterbitkan oleh Departemen Agronomi dan Hortikultura Fakultas Pertanian, Institut Pertanian Bogor dan Perhimpunan Agronomi Indonesia (PERAGI). Jurnal Agronomi Indonesia merupakan media untuk publikasi tulisan asli yang berkaitan dengan budidaya tanaman secara luas, dalam Bahasa Indonesia maupun Bahasa Inggris. Naskah dapat berupa: hasil-hasil penelitian mutakhir (paling lama 5 tahun yang lalu), ulasan (review)singkat, analisis kebijakan atau catatan penelitian (research note) singkat mengenai teknik percobaan, alat, pengamatan, hasil awal percobaan (preliminary result).
Articles 9 Documents
Search results for , issue " Vol 34, No 2 (2006): Jurnal Agronomi Indonesia" : 9 Documents clear
Identifikasi Somaklon Padi Gajahmungkur, Towuti dan IR 64 Tahan Kekeringan Menggunakan Polyethylene Glycol Lestari, Endang Gati; Mariska, Ika
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 2 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The drought stress tolerant and high yielding rice is needed in upland rice system. The changing global climate makes dry season longer, resulting in the reduction of rice production. There should be an effort to introduce new variety of high-yielding and drought tolerant rice.  In this attempt, research was conducted to improve the genetic of Indica rice, particularly Gajahmungkur, Towuti and IR 64 varieties in order to find the somaclones with the characteristics above. As an approach, gamma-ray mutative induction was applied to be followed by selection in PEG. The regenerated shoot from the irradiated callus was then selected and acclimatisized in the greenhouse to obtain eighty three somaclones from the three varieties. PEG (molecular weight 6000) was applied to obtain the drought-tolerant somaclone. PEG was a selective agent used by which populations could be selected in a short time. Treatment with  20% PEG (equals to osmotic potential 1.2 Mpa) on the rice produced 16 somaclones from Gajahmungkur, 12 from Towuti and 18 from IR 64 putatively drought tolerant.   Key words : Oryza sativa, drought tolerance, PEG
Review : Seed Treatments Using Matriconditioning to Improve Vegetable Seed Quality Ilyas, Satriyas
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 2 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

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Pengaruh Jenis Media Perkecambahan dan Perlakuan Pra Perkecambahan terhadap Viabilitas Benih Mengkudu (Morinda citrifolia L.) dan Hubungannya dengan Sifat Dormansi Benih Murniati, Endang; Suminar, Marlia
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 2 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The experiment was conducted at Leuwikopo Lath House and Seed Science and Technology Laboratory Department of Agronomy, Bogor Agricultural University, Darmaga, Bogor, from March to June 2004. The objective of this research was to study the effects of germination substrate and pre germination treatment on the noni seed viability in relation to the seed dormancy. The research was arranged in the Randomized Complete Block Design with two factors. The first factor was germination substrates, consisted of sand, paddy charcoal and soil mixed with compost (1:1). The second factor was pre germination treatments, consisted of control, scarification, KNO3 1%, KNO3 2%, warm water (470C), combination of scarification and KNO3 1%, combination of scarification and KNO3 2%, combination of scarification and warm water (470C). This result showed that soil mixed with compost (1:1) was the best substrate for noni seed germination. Pre germination treatments as well as interaction between germination substrate and pre germination treatment had no significant effect on noni seed viability. Enforced dormancy occured on seeds which was germinated on paddy charcoal substrate.   Key words : Morinda citrifolia seed, pre germination, paddy charcoal, enforced dormancy
Pertumbuhan dan Hasil Dua Klon Ubijalar dalam Tumpang Sari dengan Jagung Suwarto, Suwarto; Setiawan, Asep; Septariasari, Dina
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 2 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

An experiment to evaluate the growth and yield of two sweetpotato clones in intercropping with maize was conducted in IPB experimental farm in Sawah Baru from December 2004 to April 2005. In intercropping, the two sweetpotato clones of CIP-1 and CIP-6 were planted among to maize rows.  Planting space of sweet potato was 100 cm x 25 cm and maize was 100 cm x 12.5 cm in a plot size of 3 m x 3 m. Besides, the two crops were also planted in monoculture. The experiment was designed as a Randomized Block Design (RBD) and replicated three times. Dry matter of stem, leaves, and roots of the two sweet potato clones in intercropping were lower than in monoculture.  The same response occurred for yield of storage root.  The storage root weight of sweet potato clone, respectively, in monoculture and intercropping was 1.350 and 2.533 kg plot-1 of CIP-1 and 3.167 and 11.083 kg plot-1 of CIP-6.  On the other hand, there was no significance difference in growth and yield of maize in monoculture (3.35 kg plot-1) and intercropping (3.13 kg plot-1).  Land equivalent ratio of the intercropping maize with CIP-1 and CIP-6 were 1.7 and 1.4, respectively.  It means that land productivity can be increased by those intercropping.   Key words: Sweet potato clones, intercropping, maize
Evaluasi Pertumbuhan dan Produksi Padi Gogo Haploid Ganda Toleran Naungan dalam Sistem Tumpang sari Sasmita, Priatna; Purwoko, Bambang S.; Sujiprihati, S.; Hanarida, I.; Dewi, I. S.; Chozin, M. A.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 2 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Three doubled haploid (DH) upland rice lines obtained from anther culture having good agronomic and shade  tolerant traits were planted in an intercropping with maize. Their  monoculture systems were also included.  Those lines were GI-8, IG-19, and IW-56. Jatiluhur was also treated similar as shade tolerant control cultivar. The experiment was arranged in randomized complete block design with three replications. The treatments consisted of eight intercropping systems, four monoculture systems of rice, and two monoculture systems of maize. The result showed that all of tested DH lines were consistently shade tolerant under intercropping condition. The characteristics was represented by  similar growth and grain yield with  Jatiluhur under  intercroping system. The highest grain yield was 2.49 t/ha resulted by GI-8 and IG-19 lines  at the time that Jatiluhur was 2.36 t/ha. The intercropping of DH lines with  maize also showed the Land Equivalent Ratio (LER) =1.33-1.58, while Jatiluhur LER = 1.25-1.28, indicating that agronomically they were more advantageous than those in the monoculture system.   Key words :  Doubled haploid,, intercropping system, shade tolerant lines
Kekerabatan Genetik Populasi Bengkuang Pachyrhizus erosus Berdasarkan Karakter Morfologi Bunga dan Daun Karuniawan, Agung; Wicaksana, Noladhi
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 2 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

Yam bean Pachyrhizus erosus is widely cultivated in Central America, Africa, Asia and Pacific.  The objective of the research was to analyse genetic relationships of yam bean originated from Indonesia compared to its ancestor species from Mexico and Guatemala. Fourty three yam beans consisted of 35 genotypes from Indonesia and 8 introduced genotypes from Mexico and Guatemala were planted under complete block design with two replications. Fourteen significant different traits from 25 morphological leaf and flower properties traits have been used to analyse the genetic relationships. Results showed that yam beans from Sumatra differed from its relatives from the rest regions of Indonesia. Yam bean populations originated from Indonesia are closely related to its ancestor species from Mexico and Guatemala.   Key words :  Yam bean, Pachyrhizus erosus, genetic relationships
Kandungan Beberapa Zat Endogen pada Buah Retensi dan Buah akan Rontok pada Mangga Sakhidin, Sakhidin; Purwoko, Bambang S.; Yahya, Sudirman; Poerwanto, R.; Susanto, Slamet; Abidin, A. S.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 2 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The aim of this research was to study the relationship between fruit drop  and contents of auxin, polyamines, ACC, total sugar, and starch. Cultivars of mango used were Gadung 21 and Lalijiwo.The persisting fruit and abscising fruits were used to quantify auxin, polyamine, ACC, total sugar, and starch.  The content of polyamine and ACC was determined on pericarp, auxin on seed, whereas the content of starch and total sugar was determined on mesocarp. The result of research showed that fruit drop was preceded by low content of auxin that increased the sensitivity of abscission zone to ethylene.  The increased sensitivity of abscission zone to ethylene was supported by low content of polyamine and  high content of ACC. The abscising fruit has high content of starch, but low in  total sugar content.   Key words : Mango, persisting fruit, abscising fruit, auxin, polyamine, ACC, total sugar, starch
Multiplikasi dan Pigmentasi Antosianin Daun Dewa (Gynura pseudochina (L) DC) In Vitro Nirwan, ,; Aziz, Sandra Arifin
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 2 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The research consisted of two experiments, they were shoot multiplications experiment and root induction with anthocyanins content experiment.  Randomized block design with two factors was used in the two experiments.  In the first experiment BAP and IAA were used which were 0, 1, 2, 3 ppm and  0, 0.5 and 1 ppm, respectively. In the second experiment IAA and sucrose were used which were 0, 0.5, 1 ppm and 30, 40, 50 and 60 g/l.  Addition of BAP 3.54 and 2.98 ppm without IAA to in vitro MS medium in the first experiment, significantly increased the number of shoots (33.21) and number of leaves (52.53)  at 5 weeks after planting.  MS medium with BAP 0.32 ppm without IAA produced maximum shoot heights (4.11 cm), while addition BAP up to 3 ppm significantly reduced number of roots and induced callus diametres (1.48 cm).  Purple pink leaf colour was produced without BAP application. In the second experiment, addition of IAA 1 ppm with sucrose 52.18 g/l and IAA 1 ppm with sucose 48.36 g/l produced maximum of shoot number (15.01 shoots) and leaf number (29.16 leaves) at 8 weeks after planting, but the size of shoot and leaf were smaller.  Maximum shoot height (10.03cm), number of root (35.4) and length of root (22.3 cm) were produced at the IAA 0.5 ppm and sucrose 30 g/l. The highest anthocyanins content (0.071 %) and number of plantlet (2.6) were produced by addition of sucrose 30 g/l. Anthocyanin and number of plantlet decreased quadratically with sucrose addition.   Key words : Anthocyanin, In Vitro, Gynura pseudochina (L.) DC
Analisis Stabilitas Hasil Tujuh Populasi Jagung Manis Menggunakan Metode Additive Main Effect Multiplicative Interaction (AMMI) Sujiprihati, S.; Syukur, M.; Yunianti, R.
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 2 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The objective of this study was to identify the stability of seven sweet corn genotypes as breeding result of Center for Crop Improvement Studies (PSPT), using Additive Main Effect Multiplicative Interaction (AMMI) method. The design was Randomized Complete Block Design (RCBD) with three replications as blocks. The genotypes used were; PSPT-C, PSPT-K, PSPT-T1, PSPST-T2, PSPT-MM, and two commercial varieties Bogor-Hi and SD-2. The genotypes were planted in four different locations which included experiment fields of IPB-Cikabayan Darmaga (250 m above sea level) and Pasir Sarongge Cipanas (1120-1200 m above sea level), Gunung Geulis Cisarua (550 m above sea level), and Cibedug Ciawi (600 m above sea level). Based on the postdictive success and predictive success methods, the model used (AMMI 2) was able to explain interaction-influenced variation as much as 85%. The genotypes found stable in four locations were PSPT-MM, PSPT-T1, Bogor-Hi and SD-2. PSPT-C was specific for Ciawi, PSPT-K and PSPT-T2 specific for Cisarua.   Key words: AMMI, sweet corn, multilocation trials.

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