bluuebunny/crossref_metadata_2025 huggingface dataset:
Incorporating Private Savings Behavior in Product Offerings: A Case Study of Pakistan
Authors: Shaikh Salman Ahmed
Published: August 2021

In order to enhance understanding about the actual savings behaviour and impulses which drive savings behaviour, it is interesting to study the micro foundations of savings behaviour. Collecting micro data through filled questionnaire from households in urban areas, this study identifies the motives of savings and the instruments and channels where the savings are invested in Pakistan. The results reveal that investment motive, higher income and greater frequency of household members joining labor force for earning incomes enhance the monthly savings rate. The results can be used to offer Islamic investment deposits in an attractive way. If the investment deposits are pitched properly by highlighting the stable ex-post investment returns and low ex-post volatility, then people with an investment motive parking their savings in fixed income mutual funds would be attracted towards Islamic investment deposits. Likewise, incremental long term savings plans wherein periodic investments increase over a period of time can be offered given that monthly savings rate are found to be positively associated with income. Finally, joint investment accounts can be offered given the finding that monthly savings rate is higher in households with greater number of earning members in family.JEL Classification: G11, G21, G23How to Cite:Shaikh, S. A. (2021). Incorporating Private Savings Behavior in Product Offerings: A Case Study of Pakistan. Signifikan: Jurnal Ilmu Ekonomi, 10(2), 247-258. https://doi.org/10.15408/sjie.v10i2.20139.
Does Women’s Participation in Politics Matter for Economic Development in OIC-15? An Islamic Perspective
Authors: Ramdayani Sari , Abd. Majid M. Shabri , Suriani Suriani
Published: August 2021

This study aims to empirically determine and analyze the role of women's participation in politics, female population growth, trade balance, and women's labor force participation in promoting economic development across 15 OIC countries during the 2006-2017 period, both in short- and long-run from an Islamic perspective. Using the Panel Autoregressive Distributed Lag (ARDL) method, this study found that, in the short term, trade balance and women's labor force participation have promoted Islamic economic development. In contrast, women's participation has a negative effect on the economic development of OIC countries. In the long term, on the other hand, all variables have promoted Islamic economic development in OIC countries, except for the trade balance variable. These findings suggest that coordination and synergy for strengthening economic development among OIC countries need to be enhanced, focusing on women's role in politics, labor force, quality of population, and economic dimensions.JEL Classification: C33, F16, J16, O11, P48Ramdayani, S., Majid, M. S. A., & Suriani, S. (2021). Does Women's Participation in Politics Matter for Economic Development in OIC-15? An Islamic Perspective. Signifikan: Jurnal Ilmu Ekonomi, 10 (2), 209-222. https://doi.org/10.15408/sjie.v10i2.20214.
Bibliometric Analysis and Review of Halal Tourism
Authors: Hidayat Sutan Emir , Rafiki Ahmad , Nasution Muhammad Dharma Tuah Putra
Published: August 2021

The purpose of this paper is to review the existing works and literature on halal tourism using bibliometric analysis in an attempt to explore the expanding journey of this concept since its conceptualization. Based on a bibliometric analysis of 77 articles retrieved from the Scopus database from 2004 to Sept 2020, this study employs the following bibliometric techniques such as citation, co-citation, and co-occurrence of author keywords. This study finds the nature and direction of research on halal tourism had been conducted over the past decades. It also finds the most dominant authors, journals, institutions, and countries about the works on halal tourism. However, using a single source of the database could be a limitation of this study that, thus expectedly, additional techniques are needed for future researches. For academicians and practitioners, they could get comprehensive insights on the halal tourism concept from this study, which can reference strategic initiatives to encourage Muslim traveler loyalty and obtain Muslim tourist satisfaction.JEL Classification: M31, Z12, Z30, Z30, Z32How to Cite:Hidayat, S. E., Rafiki, A., & Nasution, M. D. T. P. (2021). A Bibliometric Analysis and Review of Halal Tourism. Signifikan: Jurnal Ilmu Ekonomi, 10(2), 177-194. https://doi.org/10.15408/sjie.v10i2.20270.
The Impact of Islamic Bank Financing, Government Spending, and Investment on Economic Growth in Indonesia
Authors: Nofrianto Nofrianto , Muliana Yunie , Cahyadi Adi
Published: August 2021

This study aims to analyze the effect of Islamic bank financing, government spending, and investment on economic growth in Indonesia from 2003 to 2019. A quantitative descriptive methodusing the Vector Error Correction Model (VECM) analysis was applied. The results showed that in the short term, the variables of Islamic bank financing, government spending, and investment did not have a significant effect on economic growth. This shows that these variables require enough time to affect the economic growth. However in the long term, the results showed that Islamic bank financing and investment respectively have a significant, negative effect on economic growth, while government spending has a positive and significant effect on economic growth in Indonesia.JEL Classification: F22, F24, I32, J01, O15How to Cite:Nofrianto, Muliana, Y., & Cahyadi, A. (2021). The Impact of Islamic Bank Financing, Government Spending, and Investment on Economic Growth in Indonesia. Signifikan: Jurnal Ilmu Ekonomi, 10(2), 299-310. https://doi.org/10.15408/sjie.v10i2.20469.
Role of Cash Waqf Linked Sukuk In Economic Development and International Trade
Authors: Tanjung Hendri , Windiarto Agus
Published: August 2021

The aim of this paper is to examine the role of Cash Waqf Linked Sukuk (CWLS) in economic development and trade in Indonesia. This research is motivated by the fact that there is still limited financing to economic development in Indonesia as well as trade financing. The research based on a qualitative methodology using the data from scientific journals and paper in the field of Cash Waqf, including CWLS. The results cash waqf in several countries has been used for beneficiaries.  Especially for CWLS, it consists of 2 types, namely wakaf sukuk and retail waqf sukuk. For waqf sukuk, the proceeds of the waqf have been channelled to finance the construction of the retina center and glaucoma center at the hospital. Meanwhile, retail waqf sukuk are used by each nazir to finance the program. This research shows that CWLS is proven to play a role in economic development, particularly infrastructure. The infrastructure that has been built is in the health sector. CWLS can also be an alternative source of funds with low-cost of fund which in turn enables the Eximbank/ECA to extend trade financing to the cooperative with competitive price. However, there are some action need to be taken, i.e (i) conduct socialization regarding CWLS to improve public awareness and enlarge the wakif base and (ii) issue DSN regulations regarding CWLS.JEL Classification: F13, F63, P33How to Cite:Tanjung, H., & Windiarto, A. (2021). Role of Cash Waqf Linked Sukuk in Economic Development and International Trade. Signifikan: Jurnal Ilmu Ekonomi, 10(2), 275-290. https://doi.org/10.15408/sjie.v10i2.20493.
Restructuring and Bank Performance in Dual Banking System
Authors: Sukmana Raditya , Ibrahim Mansor H
Published: August 2021

While extensive study deals with bank competition and performance relationship, this study pioneers in focusing the existence Islamic bank in the presence of well established conventional banking system in Malaysia. This paper assesses the impact of changing competition landscape and Islamic bank penetration on bank risk, profitability and capitalization.  This study utilizes an unbalanced panel dataset consisting of 37 commercial banks over the period 1997 to 2015. the paper uses a panel VAR methodology to discern the interactions between bank competition and Islamic banking presence on one hand and bank performance on the other hand.Findings: We find evidence supportive of both competition – stability and competition – fragility views for conventional banks. The results suggest that bank competition improves conventional bank risk and, at the same time, lower profitability and capital holdings.  As for Islamic banks, competition seems to robustly influence only bank profitability.  Finally, we note that increasing Islamic bank penetration improves the risk profile of conventional banks and, as expected, reduces their market power.  These results bear important implications on the design of competition policies in a dual banking system as well as on the development of the Islamic banking sector.JEL Classification: C23, G21, G28How to Cite:Sukmana, R., & Ibrahim, M. H.. (2021). Restructuring and Bank Performance in Dual Banking System. Signifikan: Jurnal Ilmu Ekonomi, 10 (2), 223-247. https://doi.org/10.15408/sjie.v10i2.20740.
Impact of Coronavirus and Macroeconomic Indicators on Sharia Obligation with Simultaneous Model
Authors: Bawono Anton , Rofiuddin Mohammad , Nabila Rifda , Anwar Saiful
Published: August 2021

This study examines the macroeconomic variables exchange rate and BI rate in collaboration with the Coronavirus Disease case against Sukuk. In addition, this study also examines the exchange rate influenced by the BI rate variable and the case of Coronavirus Disease. The data analysis method in this study uses a simultaneous equation model Two-Stage Least Square. This study found that the exchange rate affects the demand for Sukuk while the BI rate does not affect it. But what is surprising is that when the Coronavirus Disease 2019 case occurred, it did not affect the demand for Sukuk. This study also found that the exchange rate is influenced by the BI rate and the case of Coronavirus Disease. The contribution of this research is that when the government cannot intervene in the exchange rate, which can affect the demand for Sukuk, it can be done by intervening in the BI rate.JEL Classification: C30, G12, O10How to Cite:Bawono, A., Rofiuddin, M., Nabila, R., & Anwar, S. (2021). Impact of Coronavirus and Macroeconomic Indicators on Sharia Obligation with Simultaneous Model. Signifikan: Jurnal Ilmu Ekonomi, 10(1), 291-298. https://doi.org/10.15408/sjie.v10i2.21084.
Determinants of Behavioral Intentions to Use Sharia Financial Technology (Fintech)
Authors: Setiawan Dani , Darwanto Darwanto , Gunanto Edy Yusuf Agung
Published: August 2021

The growth of sharia fintech is not proportional to the majority of the Muslim population. There are only a few studies that discuss the behavioral intentions of consumers who use sharia fintech. This study aims to identify the factors influencing Muslim's behavioral intentions in using sharia fintech. This study conducted 400 respondents in four types of sharia fintech (digital payment, lending, crowdfunding, and risk and management). This study uses a structural Equation Modeling - Partial Least Square (SEM-PLS) approach. Variable Planned behavior (PB), Acceptance Model (AM), Use of Technology (UT), Digital Literacy (DL), and Sharia Financial Literacy (SFL) have significant positive effects on Behavior Intention (BI). This study provides recommendations to improve the distribution of internet access infrastructure and the right curriculum in increasing digital literacy, Islamic finance literacy, and also more accessible fintech services.JEL Classification: D83, D91, G2, Z1How to Cite:Setiawan, D., Darwanto., & Gunanto, E. Y. A. (2021). Determinants of Behavioral Intentions to Use Sharia Financial Technology. Signifikan: Jurnal Ilmu Ekonomi, 10(2), 325-342. https://doi.org/10.15408/sjie.v10i2.21451.
Trade Agreement and Economic Growth: Evidence in D-8 Countries
Authors: Arisman Arisman , Al Arif Mohammad Nur Rianto , Harahap Darwis
Published: August 2021

The D-8 organization was established to accelerate the economies of eight developing countries that joined the OIC, but the data showed a decline in the share of the D-8 countries towards the total GDP of developing countries. Thus, this study examines whether there are differences in economic growth between D-8 and non-D-8 countries. The tests were carried out on eight D-8 member countries and eight non-D8 countries. Using panel regression with a fixed-effect model, the study results indicate differences in economic growth between D-8 and non-D-8 member countries. These results indicate that joining D-8 made a significant contribution to its member countries. In addition, all control variables such as political stability, population, export, and human development index show a positive impact on economic growth.JEL Classification: F13, F14, F43How to Cite:Arisman., Al Arif, M. N. R., & Harahap, D. (2021). Trade Agreement and Economic Growth: Evidence in D-8 Countries. Signifikan: Jurnal Ilmu Ekonomi, 10 (2), 311-324. https://doi.org/10.15408/sjie.v10i2.21457.
Corporate Governance from an Islamic Moral Economy Perspective: The Dimensions and Analysis
Authors: Sakti Muhammad Rizky Prima , Tareq Mohammad Ali , Kamiyama Hajime
Published: August 2021

Corporate governance from Islamic perspective is derived from Islamic worldview, whereby the God is at the apex and human beings are below Him. However, there is no unified definition of corporate governance under shari’ah point of view. To bridge the applicability of Islamic corporate governance model with Islamic moral economy framework, some key questions to be addressed are as follows. (i) do Islamic corporate governance models consistent with the aspiration of Islamic moral economy? (ii) what are the important dimensions of Islamic corporate governance? (iii)  what is the concept of Islamic corporate governance inspired by the ideals of Islamic moral economy? To accomplish the objectives, this paper follows critical review analysis as a methodology, through which it aims to highlight how each Islamic corporate governance model models are being constructed and to compare those models with Islamic moral economy perspective. The paper proposes the suitable model of Islamic corporate governance under the Islamic moral economy perspective.JEL Classification: G34, O16How to Cite:Sakti, M. R. P., Tareq, M. A., & Kamiyama, H. (2021). Corporate Governance from an Islamic Moral Economy Perspective: The Dimensions and Analysis. Signifikan: Jurnal Ilmu Ekonomi, 10(2), 359-378. https://doi.org/10.15408/sjie.v10i2.21511.
La Agrónica: informática, electrónica, telecomunicaciones al servicio de los recursos naturales
Authors: Florez Calderón Mauro
Published: August 2021

En el presente artículo se describe el surgimiento de la agrónica, algunas aplicaciones y sus posibilidades atendiendo la realidad nacional.
Sonication effect on foam properties of egg white
Authors: Nagy Dávid , Zsom-Muha Viktória , Németh Csaba , Felföldi József
Published: August 2021

The aim of this study was to determine the effect of ultrasound treatment on foaming properties of egg white. The samples were sonicated at 20/40 kHz and 180/300 W equipment power (3.7/6.9 W absorbed power) for 30, 45 and 60 minutes. Foam capacity had been increased by 25% due to sonication at 40 kHz and 6.9 W absorbed power for 60 minutes. This phenomenon may be caused by the homogenization effect of ultrasound and protein exposure of hydrophobic groups that improve the adsorption of protein onto the air/water interfacial molecules. It is found that frequency and duration of the treatment have no significant impact on the changes in foam capacity, only the absorbed power. On the other hand, foam stability had been decreased during the ultrasonic treatment. We can assume that sonication decreases the potential difference between the dispersed particles and the dispersion medium and this may be the cause of the collapse of the foam structure due to ultrasound treatment. In this case frequency, treatment time, and the absorbed power had a significant effect on the stability.
Parameter genetik kultivar-kultivar jagung local pada cekaman salinitas sedang
Authors: Samudin Sakka Bin , Khalik Jeki Moh. Adnan , Akbar Ruli , Muliati Muliati , Mustakin Mustakin
Published: August 2021

Produktivitas jagung di Sulawesi Tengah masih relatif rendah dibanding produksi nasional sehingga perlu ditingkatkan melalui pemuliaan tanaman. Penelitian bertujuan untuk mengkaji parameter genetik tanaman jagung pada cekaman salinitas sedang.  Penelitian dilaksanakan pada Juni sampai Agustus 2019, di Green House Fakultas Pertanian, Universitas Tadulako, Palu. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) terdiri atas 6 perlakuan genotip dan diulang 3 kali serta 5 unit tanaman per perlakuan sehingga terdapat 90 unit percobaan. Parameter genetik yang di analisis adalah koefisiean keragaman genotipik, koefisien keragaman fenotipik, heritabilitas, kemajuan genetik, korelasi, dan analisis sidik lintas. Hasil penelitian menunjukkan bahwa kehijauan daun, bobot tongkol berkelobot, berat tongkol tidak berkelobot, dan berat biji pertongkol memiliki koefisien keragaman genetik tinggi. Kehijauan daun, berat tongkol berkelobot, bobot tongkol tidak berkelobot, panjang tongkol tidak berkelobot, diamater tongkol, berat biji per tongkol dan bobot 100 biji memiliki nilai heritabilitas dan kemajuan genetik tinggi. Seleksi secara tidak langsung dapat dilakukan pada umur panen agar diperoleh hasil jagung lokal yang tinggi pada kondisi tercekam salinitas sedang. Karakter-karakter tersebut dapat dijadikan acuan dalam menyeleksi tanaman jagung dengan cekaman salinitas sedang untuk program pemuliaan jagung.AbstractThe productivity of maize in Central Sulawesi is relatively low compared to national production and needs to be improved by plant breeding. The study aimed to examine the genetic parameters of the maize plant traits at moderate salinity stress. The research was conducted from June to August 2019, at the Green House of the Faculty of Agriculture, Tadulako University, Palu. The genetic parameters analyzed were genetic coefficient of variation, phenotypic coefficient of variation, heritability, genetic advance, correlation, and path analysis. The experimental design used a completely randomized design consisting of six genotypic treatments and repeated three times. The results showed that the leaves greenness, the weight of the cob with and without husk, and weight of seeds per cob had a high genetic coefficient of variation. Leaf greenness, the weight of the ear with and without husk, ear length without husk, ear diameter, seed weight per ear and yield have a high value of heritability and genetic advance. Indirect selection can be applied through harvest time trait to obtain a high local maize yield in moderate salinity stress condition. These traits can be used as a reference in selecting maize plants with moderate salinity stress for maize breeding programs.
Pengaruh pupuk guano dan media tanam terhadap pertumbuhan dan hasil tanaman buncis tegak
Authors: Utami Esty Puri , Heryani Indri , Chaidir Liberty
Published: August 2021

Penurunan kualitas tanah karena akumulasi penggunaan pupuk kimia berdampak pada penurunan hasil tanaman buncis tegak. Teknik budidaya organik dengan menggunakan media tanam campuran tanah, arang sekam, dan cocopeat serta penggunaan pupuk guano dilakukan sebagai upaya alternatif peningkatan produksi buncis. Penelitian ini bertujuan untuk mengkaji pengaruh dosis pupuk guano dan berbagai jenis media tanam terhadap pertumbuhan dan hasil tanaman buncis tegak (Phaseolus vulgaris L.). Penelitian dilaksanakan dari April hingga Mei 2020 di Desa Cileunyi Kulon, Kecamatan Cileunyi, Kabupaten Bandung. Rancangan percobaan berupa Rancangan Acak Kelompok (RAK) faktorial dua faktor. Faktor pertama yaitu dosis pupuk guano terdiri atas 4 taraf: kontrol, 5 t ha-1, 10 t ha-1, dan 15 t ha-1. Faktor kedua yaitu media tanam dengan 5 taraf: tanah (kontrol), arang sekam padi, cocopeat, tanah + arang sekam padi, dan tanah + cocopeat. Hasil penelitian menunjukkan interaksi antara dosis pupuk guano dengan media tanam pada tinggi tanaman 28 HST. Dosis pupuk guano berkorelasi positif dengan variabel pertumbuhan tanaman dengan dosis terbaik yaitu 15 t ha-1. Media tanam campuran tanah dan arang sekam menghasilkan tanaman dengan tinggi tanaman, bobot polong segar, dan bobot polong kering tertinggi di antara semua perlakuan. Pupuk guano dapat di aplikasikan pada berbagai media tanam untuk menghasilkan pertumbuhan tanaman buncis yang optimal.AbstractThe decline in soil quality cause by chemical fertilizer affected to the growth and yield of bush bean. Organic farming using guano fertilizer and combination of soil, husk charcoal, and cocopeat as the planting media can be used as an alternative technology to increase bush bean production. This study aimed to determine the effect of guano fertilizer dosage and various type of growing media on growth and yield of bush bean (Phaseolus vulgaris L.). This study was conducted from April to May 2020 at Cikandang village, Cileunyi Kulon, Cileunyi, Bandung. The experimental design used was factorial randomized block design with two factors. The first factor was dosage of guano fertilizer consisted of 4 levels i.e. control, 5 t ha-1, 10 t ha-1, and 15 t ha-1. The second factor was growing media with 5 levels i.e. soil (control), husk charcoal, cocopeat, soil + husk charcoal, and soil + cocopeat. The results showed the interaction between dosage of guano fertilizer and growing media on plant height in 28 days after planting. The dosage of guano fertilizer had a positive correlation with plant growth traits, and 15 t ha-1 as the best dosage for bush bean growth and yield. The media soil + husk charcoal produced plants with the highest plant height, fresh pod weight, and dry pod weight among all treatments. Guano fertilizer can be applied to various growing media to produce the optimal bush bean growth.
Pengaruh faktor lingkungan terhadap pertumbuhan beberapa aksesi Dioscorea alata L terpilih koleksi kebun raya purwodadi
Authors: Fiqa Abban Putri , Nursafitri Titik Helen , Fauziah Fauziah , Masudah Shofiyatul
Published: August 2021

Uwi (Dioscorea alata L.) merupakan jenis tanaman umbi-umbian berpotensi nutrisi. Namun pemanfaatannya sebagai bahan pangan alternatif masih jarang, karena keterbatasan informasi potensi nutrisi dan sistem budidaya. Penelitian ini bertujuan untuk menentukan faktor-faktor lingkungan yang berpengaruh terhadap pertumbuhan uwi. Penelitian dilakukan di lahan percobaan di Kabupaten Pasuruan, pada tujuh aksesi yang dipilih berdasarkan hasil penelitian sebelumnya, yaitu aksesi nomor 28, 36, dan 86 (Pasuruan), 42 dan 43 (Nganjuk), 57 dan 66 (Malang). Parameter lingkungan yang diamati meliputi suhu udara, kelembaban udara, intensitas cahaya, pH tanah, kelembaban tanah, jumlah dan jenis gulma. Hasil pengamatan dianalisis secara deskriptif dan statistik dengan uji Biplot menggunakan software Past 3. Hasil penelitian menunjukkan bahwa intensitas cahaya dan jumlah jenis gulma merupakan faktor lingkungan yang paling berpengaruh pada pertumbuhan tanaman uwi. Terdapat tiga grup aksesi tanaman uwi berdasarkan perbedaan faktor lingkungan yang mempengaruhi pertumbuhannya. Aksesi 42, 43 dan 57 dipengaruhi oleh suhu dan kelembaban udara, aksesi 28, 36 dan 66 dipengaruhi oleh intensitas cahaya dan aksesi 86 dipengaruhi oleh pH tanah. Analisis deskriptif menunjukkan bahwa sebagian besar gulma yang tumbuh merupakan tanaman invasif yang mempengaruhi pertumbuhan tanaman komoditas. Aksesi nomor 42, 43 dan 57 direkomendasikan untuk dibudidayakan di lahan sub optimal dengan kondisi pH asam dan minim air.AbstractWater yam (Dioscorea alataL.) is one of the tubers potentially as nutrition source. However, its utilization as the source of food alternative is still rare causes by limited information about its nutritional content and cultivation. The research aimed to determine the environmental factors effects the growth of water yam. The study was conducted in the trial site at Pasuruan with seven selected accessions of water yam based on previous research i.e. accessions number 28, 36 and 86 (Pasuruan), 42 and 43 (Nganjuk), 57 and 66 (Malang). The observed environmental parameters were the number and type of weeds, temperature, humidity, light intensity, soil pH, and soil moisture. The observations were descriptive and statistically analyzed using Biplot test with Past 3 software. The results showed that the light intensity and the number of weed species are the environmental factors that have the most affected on the growth of water yam plants. Accessions 28, 36 and 66 are affected by light intensity, accession 86 is affected by soil pH, and accessions 42, 43 and 57 are affected by air temperature and humidity. Most of the weeds grown in the study area are invasive species, which affect the growth of cultivated crops, so weeding is needed. Accession number 42, 43 and 57 adaptively grow in sub-optimum land with acidic pH conditions and minimum water capacity.
Respon tanaman padi (Oryza sativa L.) terhadap sistem tanam dan jumlah bibit
Authors: Lestari Ndari Retno , Isnaini Soni , Safiuddin Safiuddin , Yatmin Yatmin , Maryati Maryati
Published: August 2021

Sistem tanam (ST) yang sering digunakan petani yaitu ST tegel. Sampai sekarang masih banyak petani yang menggunakan bibit lebih dari tujuh batang per lubang tanam (BpLT). Tujuan penelitian adalah untuk mempelajari respon tanaman padi terhadap  ST dan jumlah bibit per lubang tanam (JBpLT). Penelitian dilakukan di Desa Raman Aji, Kecamatan Raman Utara, Lampung Timur pada bulan Februari sampai Mei 2016.  Perlakuan disusun dalam Rancangan Kelompok Teracak Lengkap dengan pola split plot.  Petak utama adalah ST jarwo 2:1, ST Jarwo 4:1, dan ST tegel 25 x 25 cm. Anak petak terdiri atas JBpLT: 1 BpLT, 2 BpLT, dan 3 BpLT. Data dianalisis ragam dan dilanjutkan uji orthogonal  kontras, semua pengujian dilakukan pada taraf 5%.  Hasil percobaan menunjukkan bahwa (1) ST jarwo 2:1 dan ST jarwo 4:1 meningkatkan pertumbuhan padi hibrida Mapan P-05 dibandingkan ST tegel 25 x 25 cm, (2) penanaman 1 BpLT meningkatkan komponen hasil padi dibandingkan penanaman 2 BpLT dan 3 BpLT, dan (3) penanaman 1 BpLT memberikan hasil GKG (6,86 t ha-1) yang lebih tinggi dari penanaman 2 BpLT (5,64 t ha-1) dan 3 BpLT (4,59 t ha-1) pada ST jarwo 2:1, ST jarwo 4:1 dan ST tegel 25 x 25 cm, secara berurutan.AbstractThe common planting system (PS) used by the farmers is Tegel system. Yet, many farmers still use more than seven seeds per planting hole (SpPH). The research objective was to study the reponse of rice plants to the planting system and the number SpPH. The research was conducted in Raman Aji Village, Raman Utara, East Lampung from February to May 2016. The treatments were arranged in a RCBD with a split plot pattern (the main plot were the PS i.e. jarwo 2: 1, jarwo 4: 1 and “Tegel” 25 x 25 cm; the subplots are the number of SpPH i.e. 1 SpPH, 2 SpPH, and 3 SpPH). The results showed that (1) the jarwo 2: 1 system increased rice growth compared to the 25 x 25 cm “Tegel”; (2) application of 1 SpPH increased the yield  component  of rice compared to planting 2 SpPH and SpPH; and (3) application of 1 SpPH (6.86 t ha-1) gave the higher weight of milled grain than using 2 SpPH (5.64 t ha-1) and 3 SpPH (4.59 t ha-1), both planted in the jarwo 2:1, jarwo 4:1 and 25 x 25 cm  “Tegel” System
Pengaruh konsentrasi Si biogenic dan N-total terhadap pertumbuhan dan konsentrasi nitrat tanaman selada hidroponik
Authors: Ginandjar Salamet , Qurrohman Budy Frasetya Taufik , Rahmatullah Panji
Published: August 2021

Tanaman selada merupakan sayuran yang dikonsumsi dalam bentuk segar. Karakteristiknya sebagai tanaman akumulator nitrat perlu diimbangi pemupukan N dan aplikasi Silika (Si) sesuai kebutuhan tanaman. Penelitian ini bertujuan untuk mempelajari interaksi ekstrak silika sekam padi (ESSP) dan N-total, serta memperoleh konsentrasi  ESSP dan N-total yang tepat untuk menghasilkan panen selada yang tinggi tetapi aman bagi kesehatan. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap Faktorial, faktor pertama adalah konsentrasi ESSP (0 ppm, 30 ppm, 60 ppm, 90 ppm) dan faktor kedua adalah konsentrasi N-total (100 ppm, 200 ppm, 300 ppm), setiap kombinasi perlakuan diulang 3 kali. Parameter yang diamati yaitu tinggi tanaman 35 hari setelah tanam (HST), luas daun, berat kering tanaman, berat segar tanaman, kandungan nitrat pada daun selada. Data dianalisis dengan analisis varians taraf 5% dilanjutkan dengan Uji Jarak Berganda Duncan pada taraf nyata 5%, sedangkan parameter kandungan nitrat dianalisis secara deskriptif. Berdasarkan hasil analisis varians konsentrasi ESSP dan konsentrasi N-total berinteraksi pada tinggi tanaman dan berpengaruh mandiri terhadap berat kering tanaman dan berat segar tanaman. Aplikasi ekstrak silika sekam padi 30 ppm meningkatkan hasil panen 28% lebih tinggi dan menurunkan 12% kandungan nitrat tanaman selada pada N total 100-300 ppm.AbstractLettuce is a freshly consumed vegetable. Its characteristics as a nitrate accumulator plant need to be balanced with N fertilization and Silica (Si) applications according to the plant required. This research aimed to study the interaction between rice husk silica extract (ESSP) and total N to obtain the right ESSP and total N concentrations to produce high yield lettuce and safely consumed it. This study used a factorial completely randomized design. The first factor was ESSP concentrations (0 ppm, 30 ppm, 60 ppm, 90 ppm) and the second factor was total N concentrations (100 ppm, 200 ppm, 300 ppm). Each treatment combination was repeated 3 times. The parameters observed were plant height in 35 days after planting, leaf area, plant dry weight, fresh plant weight, and nitrat e content in lettuce leaves. The  data  were  analyzed  by analysis of variance at the 5%, and post-test by DMRT at the 5% significant level, the nitrate content used descriptive analysis. Based on the analysis of variance, ESSP concentration and total N concentration interacted on plant height. The ESSP concentration and total N concentration independently affected plant dry weight and fresh plant weight. Application of 30 ppm rice husk silica extract increased 28% higher yield and decreased 12% nitrate content of lettuce plants at N-total of 100-300 ppm.
Kualitas ubi kentang pada dosis pupuk NPK dan umur panen yang berbeda
Authors: Kusumiyati Kusumiyati , Indrawibawa Diky , Mubarok Syariful , Prasetyo Gustiono Tegar
Published: August 2021

Semakin tingginya permintaan bahan baku kentang untuk french fries khususnya, perlu diimbangi oleh peningkatan suplai kentang dengan kualitas yang memenuhi persyaratan skala industri. Aplikasi dosis pupuk NPK yang tepat serta umur panen yang sesuai merupakan strategi dalam meningkatkan kualitas kentang. Penelitian bertujuan untuk menentukan  dosis pupuk NPK dan umur panen yang dapat menghasilkan ubi kentang dengan kualitas olah terbaik. Percobaan dilakukan dengan menggunakan Rancangan Acak Kelompok pola faktorial dengan dua faktor dan tiga ulangan. Faktor pertama, yaitu dosis pupuk NPK (50, 100, 150% dosis rekomendasi) dan umur panen (90, 105, 120 HST). Hasil penelitian memperlihatkan bahwa perlakuan dosis pupuk NPK dan umur panen tidak memperlihatkan interaksi. Kadar air dan gula reduksi tidak dipengaruhi oleh perlakuan dosis pupuk dan umur panen. Perlakuan dosis pupuk 150 kg N ha-1, 225 kg P ha-1, dan 225 kg K ha-1 menunjukkan kadar pati ubi tertinggi dengan tingkat kerenyahan french fries paling disukai. Perlakuan umur panen 120 hari setelah tanam (HST) memberikan kadar pati dan tingkat kesukaan warna dan kerenyahan french fries paling tinggi. AbstractThe potato demand is increasing, as a raw material for french fries in particular, yet followed by potato improvement to fulfil the industry requirement. The application of NPK fertilizer in appropriate dosage and harvesting time is the essential strategy to increase potato quality. This study aimed to determine the proper dosage of NPK and harvesting time to obtain the best characteristics of potato tuber for processing. The experimental design used a factorial randomized block design consisting of two factors; NPK fertilizer dosages (50, 100, 150% recommended dosage) and harvesting time (90, 105, 120 DAP). NPK fertilizer dosage had no interaction with harvesting time. Tuber water content and reducing sugars were not affected by NPK fertilizer dosage and harvesting time. The treatment of 150 kg N ha-1, 225 kg P ha-1 and 225 kg K ha-1 had the best tuber starch content, and after processing to be french fries, it showed the most favored crispness. Meanwhile, harvesting time at 120 DAP resulted in the highest tuber starch content, french fries colour and crispness score. Giving a certain dose of NPK fertilizer will affect the quality of potato tubers. The right harvesting time affects on the potato tuber quality.
The effect of shoot explant types of eleven stevia (Stevia rebaudiana Bertoni) accessions on in vitro growth
Authors: Amien Suseno , Azhari Arini Zahra , Bakti Citra , Maulana Haris
Published: August 2021

Explants play an important role in thepropagation system of stevia (Stevia rebaudiana Bertoni). A Completely Randomized Design (CRD) was used in this experiment with factorial pattern consisting of two factors, namely three types of explants (shoot tip, first node, and second node) and eleven accessions of stevia namely a1 (Bogor), a2 (Garut), a3 (Canada), a4 (Tawangmangu), a5 (STG1), a6 (SBG 4), a7 (SBG 10), a8 (SGB 2), a9 (BR5), a10 (SGR 7.5), a11 (TR 3.5). The results showed that shoot tip explant was the best explant than first node and second node for the number of shoots (18.11 shoots), number of leaves (93.49 leaves) and wet weight (3.56 grams). The best accession of shoot height was a10(SGR 7.5) (19.95 cm), the highest number of shoots wasa7(SBG 10) (21.87 shoots), the highest number of leaves wasa7(SBG 10) (138.00 leaves), the heaviest wet weight wasa7(SBG 10) (3.56 grams), the highest leaf chlorophyll content was a10 (SGR 7.5) (0.63 µg mL-1). Accessions with the fastest root initiation time at the rooting stage was a11 (TR 3.5) (4.00 DAC), the highest number of roots wasa10 (TR 3.5) (27.11 roots), the best root length wasa2(Garut) (4.51 cm). Information on the best explant types and stevia accessions in the in-vitro multiplication stage can be used as the basis for stevia breeding programs in Indonesia.AbstractEksplan berperan penting dalam sistem perbanyakan Stevia (Stevia rebaudiana Bertoni). Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan pola faktorial yang terdiri dari dua faktor yaitu tiga jenis eksplan (ujung pucuk, ruas pertama, dan ruas kedua) dan sebelas aksesi stevia yaitu a1 (Bogor), a2 (Garut), a3 (Canada), a4 (Tawangmangu), a5 (STG1), a6 (SBG 4), a7 (SBG 10), a8 (SGB 2), a9 (BR5), a10 (SGR 7.5), a11 (TR 3.5). Hasil penelitian menunjukkan bahwa eksplan ujung pucuk merupakan eksplan terbaik dibandingkan buku pertama dan kedua untuk jumlah tunas (18,11 tunas), jumlah daun (93,49 daun) dan berat basah (3,56 gram). Aksesi terbaik pada tinggi pucuk adalah a10(SGR 7.5) (19,95 cm), jumlah pucuk tertinggi a7 (SBG 10) (21,87 pucuk), jumlah daun terbanyak a7 (SBG 10) (138.00 helai daun), bobot basah terberat a7 (SBG 10) (3,56 gram), kandungan klorofil daun tertinggi adalah GR 7,5 (0,63 µg mL-1). Aksesi dengan waktu inisiasi akar tercepat pada tahap perakaran adalah TR 3,5 (4,00 HST), jumlah akar terbanyak adalah TR 3,5 (27,11 akar), panjang akar terbaik adalah a2(Garut) (4,51 cm). Informasi jenis eksplan dan aksesi stevia terbaik pada tahap multiplikasi in-vitro dapat dijadikan dasar program pemuliaan stevia di Indonesia.
Daya gabung dan aksi gen komponen hasil jagung profilik hasil tinggi menggunakan analisis line X tester
Authors: Efendi Roy , Priyanto Slamet Bambang , Azrai Muhammad
Published: August 2021

Peningkatan produktivitas jagung dapat dilakukan melalui perakitan varietas jagung yang memiliki tingkat prolifikasi tinggi. Ketersediaan galur-galur yang memiliki tingkat prolifikasi tinggi dan daya gabung yang baik akan memberikan peluang besar dalam perakitan jagung hibrida prolifik dengan hasil tinggi. Penelitian ini bertujuan memilih galur-galur prolifik yang memiliki daya gabung yang baik pada karakter prolifikasi dan mengevaluasi tingkat prolifikasi dan produktivitas jagung hibrida yang dibentuk dari galur-galur tersebut serta mengetahui aksi gen yang berperan pada karakter komponen hasil. Percobaan dilakukan dua tahap yaitu pembentukan hibrida dari galur-galur prolifik dengan metode testcross dan evaluasi hibrida yang terbentuk dengan menggunakan rancangan alfa lattice dengan tiga ulangan. Hasil penelitian menunjukkan galur G7 memiliki nilai daya gabung umum yang baik untuk karakter persentase tanaman prolifik. Hibrida G35/G102612 merupakan hibrida uji dengan persentase tanaman prolifik tertinggi 55,8%. Hibrida G7/Mal03 dengan hasil biji 12,9 t ha-1 dan persentase tanaman prolifik 53,9% merupakan jagung hibrida prolifik dengan hasil tinggi. Aksi gen non aditif lebih berperan dalam penampilan karakter komponen hasil pada jagung prolifik.AbstractMaize productivity can be increased by improving maize varieties with high prolificacy. The adequate of high prolificacy lines with a good combining ability will provide great opportunities to form a high yield prolific maize. The research aimed to select the prolific line which has good combining ability on the prolificacy and evaluate the prolificacy and productivity of the hybrid maize from these lines and to know the gene action which plays role in the yield component characters. The research was carried out in two stages, i.e. the formation of hybrids from the prolific line using the testcross method and evaluation of hybrids using the alpha lattice design with three replications. The results showed that line G7 had a good general combining ability for the percentage of prolific plants. Hybrid G35/G102612 was the test hybrid with the highest percentage of prolific plants of 55,8%. Hybrid G7/ Mal03 which had the yield of 12,9 t ha-1and percentage of prolific plants 53,9% was the prolific hybrid maize with the high yield. The non-additive effect played the main role for yield component characters of prolific hybrid maize.
Genome assembly and annotation of the white spot syndrome virus - infected pacific white shrimp (Ltopenaeus vannamei) in Vietnam
Authors: Tung Nguyen Van , Lien Nguyen Thi Kim , Thanh Duong Chi , Hien Nguyen Thu , Lan Nguyen Ngoc , Ngan Nguyen Thi Thanh , Hoang Nguyen Huy , Trang Trinh Thi , Ninh Nguyen Huu , Hung Nguyen Huu
Published: August 2021

Pacific white shrimp (Penaeus vannamei or Litopenaeus vannamei) is native to South America, high economic value, and widely cultivated in the world and Vietnam. Over the last two decades, viral diseases have seriously threatened the shrimp aquaculture industry. Among the viral diseases, white spot syndrome virus (WSSV) is the most important viral pathogens of shrimp farming. WSSV causes a cumulative mortality can reach 100% within 3–10 days. Genome sequencing and assembly has been an important step for deciphering molecular mechanisms and accelerating genetic improvements of traits of interest in economically important species. This study aims at constructing and annotating the genome of white spot syndrome virus - infected Pacific white shrimp in Vietnam. The whole genome sequencing data was de novo assembled using SOAP denovo2 to obtained draft genome of WSSV- infected L. vannamei shrimp. The draft genome contained 3,180,049 scaffolds (genome size ~1.67 Gb) with the length arranging from 200 bp to 137,569 bp and with N50 as 616 bp. Applying gene prediction method, we have been able to identify 187,948 putative genes. The results have shown that 33,611 genes were annotate in NT database and 133,548 genes were annotated in UniProtKB/Swissprot database. These results are only the initial information about white spot syndrome virus - infected Pacific white shrimp but they are really important for future studies relating to white spot syndrome virus – resistance L. vannamei shrimp in Vietnam.
Effect of factors on growth and development of Dendrobium officinale Kimura et Migo cultured in vitro and ex vitro
Authors: Luan Vu Quoc , Tung Hoang Thanh , Hien Vu Thi , Khai Hoang Dac , Cuong Do Manh , Huong Trinh Thi , Vinh Bui Van The , Tu Vu Thi , Nhut Duong Tan
Published: August 2021

Dendrobium officinate Kimura et Migo, a species of orchid for beautiful flowers, is used in traditional medicine in many Asian countries because there are many important pharmaceuticals (chrysotoxene, erianin, confusarin, polysaccharide, alkaloid ...) in anti-cancer, anti-aging, boosting immunity and vasodilation, etc. In recent years, more than 4,000 hectares of Dendrobium officinate Kimura et Migo artificial planting has been available in China and the price of dry product was around ¥ 80,000/kg. Currently, plantlet quality is an important factor influencing the acclimatization stage, growth, and development of plants in the greenhouse. In this study, the effect of a number of factors medium, plant regulator, ventilation, and substrate to improve plantlet quality as well as further growth and development in the greenhouse conditions were investigated. The results showed that SH medium was suitable for in vitro shoot growth in terms of monitoring parameters after 90 days of culture. In shoot multiplication stage, the shoots culture on SH medium supplemented with 2 mg/L BA, 30 g/L sucrose, 9 g/L agar, 1g /L activated charcoal (AC) gave the best results with 4.53 shoots/per shoot. The SH medium supplemented with 1.0 mg/L NAA, 30 g/L sucrose, 9 g/L agar, 1.0 g/L AC combined with ventilation conditions was suitable for rooting stage with plant height (5.73 cm), number of roots (4.77), root length (5.00 cm), fresh weight (3.36 g), dry weight (0,31 g), and total chlorophyll (SPAD) (45.76 nmol/cm2). Plantlets derived from culture ventilation conditions cultivated on the mixture of pine bark and fern fiber (50:50) was the highest survival rate (100%) and growth after 12 months in the greenhouse.
Genetic diversity of H’mong short tail dog based on sequencing of the D-loop hypervariable -1 region (HV1)
Authors: Hai Pham Thanh , Phuong Bui Xuan , Coi Tran Huu , Tung Phung Thanh , Duc Ngo Quang , Khang Nguyen Minh , Duy Vu Dinh
Published: August 2021

The H'mong short tail dog is breed indigenous dogs, distributed in mountainousareas of northern Vietnam. H'mong short tail dog possesses many valuable properties such as intelligence, agility, good health, good shape, human friendliness, ease of training and it can fully meet the needs of war Dogs intelligence, strength, good parenting, people friendly and more importantly, still keeping wild characteristics of hunting dogs. The total 45 samples (blood) collected from 45 individuals in two provinces of Northern Vietnam (Ha Giang and Lao Cai), were used to assess genetic diversity based on sequencing hypervariable – 1 region (HV1) in D-loop genes. In the current study showed that genetic diversity of H'mong short tail dog was high with nucleotide diversity (Pi = 0.00801), haplotype diversity (Hd = 0.96162) and average number of nucleotide differences (Kt = 5.18384). Furthermore, 25 different haplotypes were recorded and divided into four main groups: A, B, C, and E. Of which, seven new haplotypes in haplogroups A (An1 to An7) and 18 haplotypes have been published in the world. In addition, H'mong short tail dog was found rare haplogroups (B1, C2, E1 and E4). Notably, there is none individuals contain haplotype of haplogroups (D and F). H'mong short tail dog were identified 38 single nucleotide polymorphisms, including 32 nucleotide base substitution/base insertion and 6 nucleotide indel mutation. Almost mutation was transversion (31/32) and only one nucleotide transition mutations. Phylogenetic tree shown that H'mong short tail dog have close relationship with dogs origin from East Asia (China, Japan and Korea).
Genetic variation of Anisoptera costata Korth in Tan Phu tropical forest, Dinh Quan district, Dong Nai province
Authors: Hien Dang Phan , Duc Nguyen Minh , Hong Nguyen Phan Lan , Xuan Bui Thi Tuyet , Duy Vu Dinh , Tam Nguyen Minh
Published: August 2021

Anisoptera costata Korth, an endangered species is distributed in lowland tropical forests of southern Vietnam. Habitat loss and over-exploitation are the major reasons for threatening this species. Eight polymorphic microsatellite markers were used to analyze 64 adult trees from three A. costata populations in lowland tropical forests of Tan Phu, Dinh Quan district, Dong Nai Province in Southeast Vietnam to detect the effects of deforestation on gene flow and the differentiation among populations in lowland tropical forests. The results showed that all A. costata populations have the moderate levels of the genetic diversity within populations with mean values of observed and expected heterozygosities, 0.242 and 0.269, respectively, moderate genetic differentiation among A. costata populations (0.179), and indicating limited gene flow (Nm = 1.15). Analysis of molecular variance indicated high genetic variation within populations (64.68%) and indicating moderate genetic structure in A. costata in Tan Phu. Bayesian analysis detected two genetic lineages, cluster 1 including one population of Mieu Co Nam and cluster 2 including two populations, Thac Mai and Bau Nuoc. These results contribute understanding genetic diversity of A. costata in lowland forests of Southeastern Vietnam and will provide guidelines for conservation, management and resoration of the species.
Enhanced expression of recombinant miraculin, a tasting modifying protein, in Nicotiana tabacum hairy roots using 18.2 heat shock protein promoter and terminator
Authors: Hong La Viet , Giang Nguyen Thu , Duc Le Hoang , Ngoc Pham Bich , Ha Chu Hoang
Published: August 2021

Miraculin, a taste modifier, is a protein that was first isolated from miracle fruit (Richadella dulcifica). It can change a sour taste into a sweet taste when sour acids are consumed, although it does not elicit a sweet response. Miraculin may have the potential in industry as a substitute for sugars and as artificial sweeteners. Since the miracle plant has low fruit productivity, mass production of miraculin is limited. Transgenic hairy root culture is a potential alternative system for the mass production of miraculin. In this study, we investigated the expression of recombinant miraculin in tobacco (Nicotiana tabacum) hairy roots. To increase miraculin expression, the heat shock protein 18.2 promoter and terminator were used to drive the expression of miraculin gene in a potential host system. Synthetic miraculin gene was transformed into Nicotiana tobacum leaf explants via Agrobacterium rhizogenes. The transgenic hairy root clones that contained synthetic miraculin gene showed rapid growth and reached maximum growth after 35-day culture. When the expression of miraculin gene was regulated by heat shock protein 18.2 promoter and heat shock protein terminator, the expression of recombinant miraculin increased than the control regulated by CaMV 35S promoter and nopaline synthase terminator. The recombinant miraculin was 19.97 ng per µg of the total soluble protein and equivalently with approximately 2% of the total soluble protein. For the first time, a taste modifying miraculin was successfully expressed in tobacco hairy root. The results in this study have given a promising approach for the application of the transgenic hairy root system to produce recombinant miraculin.