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  Subjects -> CONSERVATION (Total: 128 journals)
Showing 1 - 37 of 37 Journals sorted alphabetically
Advanced Sustainable Systems     Hybrid Journal   (Followers: 7)
African Journal of Ecology     Hybrid Journal   (Followers: 17)
African Journal of Range & Forage Science     Hybrid Journal   (Followers: 12)
African Journal of Wildlife Research     Full-text available via subscription   (Followers: 6)
AICCM Bulletin     Hybrid Journal   (Followers: 2)
Ambiens. Revista Iberoamericana Universitaria en Ambiente, Sociedad y Sustentabilidad     Open Access  
American Journal of Rural Development     Open Access   (Followers: 5)
Animal Conservation     Hybrid Journal   (Followers: 48)
Aquaculture, Aquarium, Conservation & Legislation - International Journal of the Bioflux Society     Open Access   (Followers: 8)
Aquatic Conservation Marine and Freshwater Ecosystems     Hybrid Journal   (Followers: 44)
Arcada : Revista de conservación del patrimonio cultural     Open Access  
Archeomatica     Open Access   (Followers: 4)
Arid Land Research and Management     Hybrid Journal   (Followers: 10)
Asian Journal of Sustainability and Social Responsibility     Open Access   (Followers: 2)
Australasian Plant Conservation: Journal of the Australian Network for Plant Conservation     Full-text available via subscription   (Followers: 4)
Biodiversity and Conservation     Open Access   (Followers: 168)
Biological Conservation     Hybrid Journal   (Followers: 224)
Bulletin of the American Museum of Natural History     Open Access   (Followers: 9)
Business Strategy and the Environment     Hybrid Journal   (Followers: 11)
Challenges in Sustainability     Open Access   (Followers: 10)
Conservación Vegetal     Open Access   (Followers: 1)
Conservation     Hybrid Journal   (Followers: 29)
Conservation Biology     Hybrid Journal   (Followers: 246)
Conservation Genetics     Hybrid Journal   (Followers: 23)
Conservation Science     Open Access   (Followers: 28)
Conservation Science and Practice     Open Access   (Followers: 1)
Diversity and Distributions     Open Access   (Followers: 42)
Earth's Future     Open Access   (Followers: 6)
Eastern European Countryside     Open Access   (Followers: 2)
Ecological Economics     Hybrid Journal   (Followers: 112)
Ecological Psychology     Hybrid Journal   (Followers: 3)
Ecological Restoration     Full-text available via subscription   (Followers: 22)
Ecology and Evolution     Open Access   (Followers: 94)
Ecology and Society     Open Access   (Followers: 51)
Environment and Planning E : Nature and Space     Hybrid Journal   (Followers: 3)
Environment Conservation Journal     Open Access   (Followers: 4)
Environmental and Resource Economics     Hybrid Journal   (Followers: 28)
Environmental and Sustainability Indicators     Open Access   (Followers: 6)
Environmental Conservation     Hybrid Journal   (Followers: 63)
Ethnobiology and Conservation     Open Access   (Followers: 3)
European Countryside     Open Access   (Followers: 1)
Forest Policy and Economics     Hybrid Journal   (Followers: 21)
Forum Journal     Full-text available via subscription   (Followers: 1)
Frontiers in Ecology and Evolution     Open Access   (Followers: 45)
Functional Ecology     Hybrid Journal   (Followers: 47)
Future Anterior     Full-text available via subscription  
Global Ecology and Biogeography     Hybrid Journal   (Followers: 64)
Global Ecology and Conservation     Open Access   (Followers: 13)
Human Dimensions of Wildlife: An International Journal     Hybrid Journal   (Followers: 6)
Ideas in Ecology and Evolution     Open Access   (Followers: 9)
In Situ. Revue des patrimoines     Open Access  
Indonesian Journal of Conservation     Open Access  
Indonesian Journal of Sustainability Accounting and Management     Open Access  
Interações (Campo Grande)     Open Access  
Interdisciplinary Environmental Review     Hybrid Journal   (Followers: 3)
International Journal of Architectural Heritage: Conservation, Analysis, and Restoration     Hybrid Journal   (Followers: 6)
International Journal of Biodiversity Science and Management     Open Access   (Followers: 6)
International Journal of Environment and Pollution     Hybrid Journal   (Followers: 2)
International Journal of Global Energy Issues     Hybrid Journal   (Followers: 8)
International Journal of Social Ecology and Sustainable Development     Full-text available via subscription   (Followers: 3)
International Journal of Sustainable Development     Hybrid Journal   (Followers: 17)
International Journal of Sustainable Development and World Ecology     Hybrid Journal   (Followers: 9)
International Soil and Water Conservation Research     Open Access   (Followers: 1)
Intervención     Open Access  
Journal for Nature Conservation     Hybrid Journal   (Followers: 28)
Journal for the Study of Religion, Nature and Culture     Hybrid Journal   (Followers: 12)
Journal of Cultural Heritage Management and Sustainable Development     Hybrid Journal   (Followers: 8)
Journal of East African Natural History     Full-text available via subscription   (Followers: 7)
Journal of Ecology and The Natural Environment     Open Access   (Followers: 5)
Journal of Industrial Ecology     Hybrid Journal   (Followers: 17)
Journal of International Wildlife Law & Policy     Hybrid Journal   (Followers: 4)
Journal of Natural Resources Policy Research     Hybrid Journal   (Followers: 10)
Journal of Paper Conservation     Hybrid Journal   (Followers: 2)
Journal of Rural Studies     Hybrid Journal   (Followers: 17)
Journal of Sustainable Mining     Open Access   (Followers: 2)
Journal of the American Institute for Conservation     Hybrid Journal   (Followers: 4)
Journal of the Institute of Conservation     Hybrid Journal   (Followers: 25)
Journal of Threatened Taxa     Open Access   (Followers: 1)
Journal of Urban Ecology     Open Access   (Followers: 5)
Julius-Kühn-Archiv     Open Access  
Lakes & Reservoirs Research & Management     Hybrid Journal   (Followers: 14)
Landscape and Urban Planning     Hybrid Journal   (Followers: 34)
Madagascar Conservation & Development     Open Access   (Followers: 2)
Madera y Bosques     Open Access  
Natural Resources and Conservation     Open Access   (Followers: 6)
Natural Resources Forum     Hybrid Journal   (Followers: 7)
Nature Conservation     Open Access   (Followers: 35)
Nature Sustainability     Hybrid Journal   (Followers: 12)
Neotropical Biology and Conservation     Open Access   (Followers: 2)
Nepalese Journal of Development and Rural Studies     Open Access  
Novos Cadernos NAEA     Open Access  
npj Urban Sustainability     Open Access  
Nusantara Bioscience     Open Access  
One Ecosystem     Open Access  
Oryx     Open Access   (Followers: 20)
Pacific Conservation Biology     Full-text available via subscription   (Followers: 2)
Park Watch     Full-text available via subscription   (Followers: 1)
Process Integration and Optimization for Sustainability     Hybrid Journal  
Rangeland Journal     Hybrid Journal   (Followers: 1)
Recursos Rurais     Open Access  
Recycling     Open Access   (Followers: 1)
Regional Sustainability     Open Access   (Followers: 1)
Resources, Conservation & Recycling     Hybrid Journal   (Followers: 20)
Resources, Conservation & Recycling : X     Open Access   (Followers: 1)
Restoration Ecology     Hybrid Journal   (Followers: 46)
Revista de Ciencias Ambientales     Open Access  
Revista de Direito e Sustentabilidade     Open Access  
Revista Meio Ambiente e Sustentabilidade     Open Access  
Revista Memorare     Open Access  
Rural Sustainability Research     Open Access   (Followers: 2)
Savana Cendana     Open Access  
Society & Natural Resources: An International Journal     Hybrid Journal   (Followers: 21)
Socio-Ecological Practice Research     Hybrid Journal  
Soil Ecology Letters     Hybrid Journal  
Southern Forests : a Journal of Forest Science     Hybrid Journal   (Followers: 3)
Studies in Conservation     Hybrid Journal   (Followers: 16)
Sustainable Earth     Open Access   (Followers: 1)
Sustainable Environment Agricultural Science (SEAS)     Open Access   (Followers: 1)
Tanzania Journal of Forestry and Nature Conservation     Full-text available via subscription   (Followers: 2)
Tropical Conservation Science     Open Access   (Followers: 1)
Tropical Ecology     Hybrid Journal  
VITRUVIO : International Journal of Architectural Technology and Sustainability     Open Access  
Water Conservation Science and Engineering     Hybrid Journal   (Followers: 1)
Wildfowl     Open Access   (Followers: 11)
Wildlife Australia     Full-text available via subscription   (Followers: 1)
Wildlife Research     Hybrid Journal   (Followers: 17)
World Review of Entrepreneurship, Management and Sustainable Development     Hybrid Journal   (Followers: 1)

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Nusantara Bioscience
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2087-3948 - ISSN (Online) 2087-3956
Published by Society for Indonesian Biodiversity Homepage  [11 journals]
  • Yield performances of rice varieties (Oryza sativa) under nano-CuO and
           nano-ZnO micronutrient fertilizers

      Abstract: Abstract. Sandanayake CLT, Weerakoon SR, Karthikeyan N, Somaratne S. 2022. Yield performances of rice varieties (Oryza sativa) under nano-CuO and nano-ZnO micronutrient fertilizers. Nusantara Bioscience 14: 95-103. Rice (Oryza sativa L.) is a major staple food in the world. There is an extreme need for higher rice yield to meet the ever-increasing demand with the rise in population despite the hampering impact of climatic changes. Nanotechnology plays a potential role in food security and introduces nano fertilizers as an alternative to conventional fertilizers. Therefore, the present research was carried out to determine the effects of nano micronutrient fertilizers; nano-CuO, and nano-ZnO on the yield of selected rice varieties, Bg360, BW364, Kaluheenati, and Kuruluthuda. Sol-gel and thermal decomposition methods synthesized nano-fertilizers used in the study. Nano-ZnO, nano-CuO, and nano-CuO-ZnO composite treatments were applied as a foliar spray at concentrations of 30 mg L-1 (T1), 60 mg L-1 (T2), and 120 mg L-1 (T3) and double deionized water served as the control (T0). The synthesized nano-fertilizers were applied during the growth stage [at 48-58 days after sowing (DAS)] and grain filling stage [100-105 DAS], while the plants were provided with appropriate levels of N, P, and K fertilizers, as recommended by Department of Agriculture. A Complete Randomized Block Design was employed with three blocks and five replicates in each block. The Yield parameters were recorded at the harvesting stage. Descriptive statistics such as mean and standard error of mean and inferential statistics were performed on the data obtained. ANOVA with interaction terms was performed to assess the significant differences between the treatments. The descriptive analyses show an increase in the yield of the rice varieties under the application of nano-fertilizers. ANOVA suggests a significant effect (p ' 0.05) of nano-CuO and nano-ZnO on the yield of rice varieties used in the study. Both traditional and inbred rice varieties indicated yield response to applied nano-fertilizers.
      PubDate: 2022-05-16
      Issue No: Vol. 14, No. 1 (2022)
  • Ethnobotany of medicinal plants from Lampung Tribe around Way Kambas
           National Park, Indonesia

      Abstract: Abstract. Yudiyanto, Hakim N, Wakhidah AZ. 2022. Ethnobotany of medicinal plants from Lampung Tribe around Way Kambas National Park, Indonesia. Nusantara Bioscience 14: 84-94. The local communities of the Lampung Tribe around Way Kambas National Park (TNWK), Lampung, Indonesia, utilize forest resources through local community knowledge. However, cultural modernization is the potential to lead to the erosion of people's traditional knowledge. Therefore, this study is essential to be conducted. This study aimed to inventory medicinal plant species and describe local communities' knowledge of the use of medicinal plants. Semi-structured interviews and observations collected ethnobotanical data. The results were presented in a table and diagram and then analyzed qualitatively. The results showed that as many as 69 species of medicinal plants belonging to 39 families were used by the local community of the Lampung Tribe around the TNWK area. Zingiberaceae was the family with the highest number of species. Leaves were the plant part that was mostly used by the local community. Boiling was the most widely used mode of preparation. The Lampung Tribe uses plants to treat various diseases grouped into external and internal diseases. The local community frequently experiences external diseases.
      PubDate: 2022-05-15
      Issue No: Vol. 14, No. 1 (2022)
  • Prevalence of b-lactamase produced in Klebsiella pneumoniae and
           Enterobacter cloacae isolated from gingivitis in Al-Najaf Province, Iraq

      Abstract: Abstract. Motaweq ZY. 2022. Prevalence of '-lactamase produced in Klebsiella pneumoniae and Enterobacter cloacae isolated from gingivitis in Al-Najaf Province, Iraq. Nusantara Bioscience 14: 78-83. This study provides phenotypic and genotypic '-lactamase formation data on 26 isolates of Klebsiella pneumoniae and Enterobacter cloacae isolated from patients suffering from gingivitis checked at Al-Kafeel clinic and private clinic in Al-Najaf Province-Iraq during the period from September 2020 to February 2021. In this study, some of them were detected by traditional phenotypic methods, while others were detected by phenotypic and then genotypically by using monoplex-PCR technique. The results revealed that out of 14 '-lactam resistance K. pneumoniae isolates, 8 isolates (57.1%) gave positive results with the direct capillary tubes method, while 12 '-lactam resistance E. cloacae gave 6 (50%) positive results. This result indicated that the enzymatic resistance was prevalent among isolates. Furthermore, the results showed that most isolates were ESBL producers according to initial and confirmatory methods. Molecular amplification of the '-lactamase enzyme blaSHV gene was detected in 8 (57.1%) and 5 (41.6%) for K. pneumoniae and E. cloacae, respectively. While all 100% of K. pneumoniae and E. cloacae isolates gave negative results for blaGES gene. This study aimed to investigate the '-lactamase formation and detection of blaSHV and blaGES genes in K. pneumoniae and E. cloacae isolated from gingivitis diseases.
      PubDate: 2022-04-26
      Issue No: Vol. 14, No. 1 (2022)
  • Colorimetric estimation of vancomycin using modified silver nanoparticles
           and implementing it on various types of pharmaceutical perpetrations

      Abstract: Abstract. Al-Karami MA, Al-Rufaie MM. 2022. Colorimetric estimation of vancomycin using modified silver nanoparticles and implementing it on various types of pharmaceutical perpetrations. Nusantara Bioscience 14: 70-77. The current research proposes a simple, quick, and sensitive method for determining the pure state of vancomycin (Van) and several of its medicinal formulations. The antibiotic (Van) is an effective reduction agent for diluting the ore mineral salt from silver nitrate (Ag+) to silver nanoparticles. Polyvinylpyrrolidone was used as a stabilizer in a medium using sodium hydroxide as a base. The highest absorption of the vancomycin oxidation-reduction product occurs at 440 nm. The calibration curve is measured, and the following data is generated, indicating that the Beer-Lambert Law is followed within the concentration range of 2.5-70 parts per million. Sandal's molar absorptivity was 2.0043 x 104 L/mol.cm, and its sensitivity was 0.0723 g/cm2. The correlation coefficient was 0.9987, and the standard deviation rate was 0.402%. The biological influence of several Gram-positive and Gram-negative bacteria was researched, and the efficacy of the samples prepared on these bacteria has shown to be promising.
      PubDate: 2022-04-25
      Issue No: Vol. 14, No. 1 (2022)
  • Short Communication: Thromboplerous hyphae of the ectomycorrhizal mushroom
           Rhizopogon roseolus with and without a host tree

      Abstract: Abstract. Putra IP, Aimi, T, Shimomura N. 2022. Short Communication: Thromboplerous hyphae of the ectomycorrhizal mushroom Rhizopogon roseolus with and without a host tree. Nusantara Bioscience 14: 47-52. Thromboplerous hyphae are modified hyphae found in the basidiocarp of many agarics. However, data on their development and function as well as on their formation in pure cultures of ectomycorrhizal mushrooms are scarce. The aim of the present study was to characterize the cytological descriptions of thromboplerous hyphae from pure cultures of Rhizopogon roseolus (Corda) Th.M. Fr. with or without the host pine tree Pinus thunbergii Parl. Thromboplerous hyphae formed on the mycelium and mycelial cords in all experimental settings. Results revealed that thromboplerous hyphae were extremely melanized, smooth, cracked on the surface, and swollen at both hyphal termini. Thromboplerous hyphae produced with a host were mainly unbranched in shape in contrast to those formed without a host that possessed additional twisted, semi-twisted, and branched forms. Some thromboplerous hyphae that grew without a host had large diameters, and few showed notable septa and clamp connections. The present study also provides evidence of the initial development of thromboplerous hyphae via vegetative hyphae and tubular hyphae. This study contributes to understanding the cytology of thromboplerous hyphae grown with and without a host tree. Further investigations on the specific functions of thromboplerous hyphae are needed to deepen the current knowledge of fungal cytology.
      PubDate: 2022-03-25
      Issue No: Vol. 14, No. 1 (2022)
  • Diversity of arbuscular mycorrhizal fungi and root colonization in
           Polygonatum verticillatum

      Abstract: Abstract. Kumar A, Tapwal A. 2022. Diversity of arbuscular mycorrhizal fungi and root colonization in Polygonatum verticillatum. Nusantara Bioscience 14: 53-63. Diversity of arbuscular mycorrhizal fungi (AMF) associated with Polygonatum verticillatum (L.) All. was investigated in two sites of Himachal Himalaya, India. A total of 15 AMF species were isolated and identified from the rhizosphere soil of P. verticillatum. The spore density was 1.48 ± 1.91 and 3.99 ± 3.78 per 20 gram of rhizosphere soil at site-I and site-II, respectively. Mycorrhizal colonization in the roots of P. verticillatum was recorded 46.12 and 52.23 percent at site-I and site-II, respectively. The mycorrhizal structures like darkly stained endophytic hyphae, coiled intracellular hyphae, Y-shaped hyphae and ‘H’ connection (Arum type) were recorded.
      PubDate: 2022-03-25
      Issue No: Vol. 14, No. 1 (2022)
  • In vitro thrombolytic activity of Moringa oleifera

      Abstract: Moringa oleifera Lam. (Family Moringaceae) is a medium sized perennial tree, commonly known as drumstick tree, horse raddish tree, miracle tree, sahjan, shobhanjana, munga arak, etc., in different languages. Leaves, flowers and pods of the plant are edible. Various parts of the plant are utilized for treatment of several diseases by ethnic communities, including heart ailments. Leaves and flowers of M. oleifera were assessed for preliminary qualitative phytochemical analysis and in vitro thrombolytic potential. Preliminary phytochemical screening has shown presence of flavonoids, terpenoids, cardiac glycosides, saponins, tannins, amino acids and carbohydrates in leaves and flowers of M. oleifera. Two types of methanolic extracts of both leaves (MEL-I and MEL-II) and flowers (MEF-I and MEF-II) were used for assessment of percent clot lysis. A significant in vitro clot lysis activity of MEL-I (36.64±1.55%), MEL-II (41.40±2.02%) and MEF-I (19.07±2.36%) and MEF-II (20.52±1.51%) was demonstrated in a concentration of one mg/ml as compared to negative control distilled water and positive control streptokinase for the first time. The edible plant's observed thrombolytic potential may be employed to prevent athero-thrombotic cardiovascular diseases. Further investigations are required to isolate the bioactive molecule responsible for the thrombolytic action.
      PubDate: 2022-03-25
      Issue No: Vol. 14, No. 1 (2022)
  • Antioxidant potency of n-butanol fraction of Ficus glumosa leaves against
           oxidative stress induced by carbon tetrachloride in the kidneys of rats

      Abstract: Abstract. Abu MS, Yakubu OE, Onuche JI, Tatah SV. 2022. Antioxidant potency of n-butanol fraction on Ficus glumosa leaves against oxidative stress induced by carbon tetrachloride in the kidneys of rats. Nusantara Bioscience 14: 40-46. The kidneys play several essential roles in the body, including regulating the water and ions reabsorb from glomerular filtrate in kidney tubules. It is controlled by several hormones such as antidiuretic hormone (ADH), aldosterone, and angiotensin II. This report presented the repairing effect of n- butanol fraction of Ficus glumosa Delile on nephrotoxicity induced by CCl4 in rats. Rats were divided into 7 groups of 5 animals each. Group 1 and 2 were used as normal and vehicle controls, respectively. Group 3 was induced but treated with neither extract nor standard drug. However, Groups 3, 4, and 5 were induced by CCl4 and administered with varying doses of the n-butanol fraction. Group 6 was induced by CCl4 and treated with a standard antioxidant drug. The results showed that treatments with an n-butanol fraction of F. glumosa leaves and silymarin significantly (p<0.05) restore the activities of SOD, GPx, and CAT comparable to normal values, i.e., 2.10±0.07 U/L, 43.8±2.49 U/L, and 34.2±2.59 U/L, respectively. In addition, the treatments reduce the MDA level in the kidney of rats treated with n-butanol fraction comparable to 0.34±0.05 mmol/L in the normal rats. Similarly, there was a significant (p<0.05) reduction of urea from 5.24 mg/dL to 3.5 mg/dL (standard value) in the treated groups. Creatinine significantly (p<0.05) reduced from 71.2 mg/dL in the treated groups to 43.3 mg/dL in the normal group. Electrolytes, Na+, K+, and Cl- levels in the CCl4-induced rats after administration of n-butanol fraction of F. glumosa leaves significantly (p<0.05) decreased to 137.8±2.59 mmol/L, 3.98±0.54 mmol/L, and 92.8±1.92 mmol/L respectively. The significant reversal of the rats' biochemical parameters can be ascribed to the ameliorative potency of the n-butanol fraction of methanol extract of F. glumosa leaves on the glomerular and tubular cells, which may have improved renal function in the injured kidney.
      PubDate: 2022-03-14
      Issue No: Vol. 14, No. 1 (2022)
  • Ethnobotanical study of medicinal plants used by local communities of
           Damot Woyde District, Wolaita Zone, Southern Ethiopia

      Abstract: Abstract. Megersa M, Woldetsadik S. 2022. Ethnobotanical study of medicinal plants used by local communities of Damot Woyde District, Wolaita Zone, Southern Ethiopia. Nusantara Bioscience 14: 10-24. Humans have used traditional medicines mainly of plant origins to treat diseases. Early humans faced a tremendous challenge when searching for natural products used as medicines. This study reports on an ethnobotanical study that focused on the traditional medicinal plants used by local communities to treat human and livestock diseases. An ethnobotanical study on medicinal plants was conducted from February 2020 to October 2020. This involved semi-structured interviews, field observations, market surveys and group discussions with informants to document information on the use and management of medicinal plants by the people of Damot Woyde District. Fifty-seven medicinal plant species belonging to 31 families were collected, which are used by the study area inhabitants to treat various diseases in humans and livestock. The leading family was Asteraceae which was represented by 7 species (12.3%), followed by Rutaceae (6 species, 10.5%) and Solanaceae (5 species, 9%). Of the 57 medicinal plants collected, 36 (63.2%) were used to treat human ailments only, while 6 (10.5%) plant species were used to treat livestock ailments only and 15 (26.31%) were used to treat both human and livestock ailments. Herbs constituted the largest number of 22 species (38.6%), followed by shrubs 18 species (31.6%), trees 15 species (26.3%) and climbers 2 species (3.51%). Leaves (31.3%) were the most commonly used plant parts of preparing traditional remedies in the study area. Oral administration was the predominant mode of administration accounting for 71%. Preference ranking analysis revealed that Allium sativum L. was the most preferred plant species for treating the common cold. When the direct matrix ranking was analyzed, Croton macrostachyus Hochst. ex. Del. was the most commonly used medicinal plant for various purposes. Our finding revealed that plant species' use plays a vital role in treating human and animal diseases in Damot Woyde District. Phytochemical and pharmacological tests are recommended mainly on frequently used medicinal plants.
      PubDate: 2022-02-15
      Issue No: Vol. 14, No. 1 (2022)
  • Synthesis of novel polymer quaternary ammonium salt derived from glucose
           as a phase transfer catalyst

      Abstract: Abstract. Alrubaie I, Salim AT, Majeed MM, Radhi AJ. 2022. Synthesis of novel polymer quaternary ammonium salt derived from glucose as a phase transfer catalyst. Nusantara Bioscience 14: 25-33. Some new polymer containing quaternary ammonium salts based-carbohydrate starting from methyl-4,6-O-benzylidene-glucopyranoside have been prepared. The ammonium groups are connected to the glucose structure in various positions (2 and 3). Our synthesis used methyl-4,6-O-benzylidene-a-D-glucopyranoside through nucleophilic reagents to produce the main intermediates. The monomer glucose- quaternary ammonium salts are immobilized on the polyvinyl azide to give the final structure of the Polymer-Supported quaternary ammonium salts. In certain new kinds of phase transfer catalysts, the effectiveness of the polymer glucose-quaternary ammonium salts was tested in the Williamson etherification. The ether synthesis is a typical example of using a phase transfer catalyst. The reactions were performed in a liquid-liquid two-phase system, applying a mixture of toluene and 50% solution of aqueous sodium hydroxide in the presence of a 20 mg/mmol catalyst (compound 9). Compared to other derivatives, the reaction of 4-nitrophenol with dibromoethylene gives the highest yields. On the other hand, compound 9 with the C16 chain gives high activity in the phase transfer catalyst.
      PubDate: 2022-02-15
      Issue No: Vol. 14, No. 1 (2022)
  • Agronomic diversity of several soybean putative mutant lines resulting
           from gamma-rays irradiation in M6 generation

      Abstract: Abstract. Nilahayati, Nazimah, Handayani RDS, Syahputra J, Rizky M. 2022. Agronomic diversity of several soybean putative mutant lines resulting from gamma-rays irradiation in M6 generation. Nusantara Bioscience 14: 34-39. Soybean is one of the foremost commodities for Indonesian people. Therefore, increasing domestic production absolutely must continue to be pursued. One way that can be done is to use the assembly technology of new superior varieties with better and adaptive properties. This study aims to determine the agronomic diversity and yield of soybean putative mutant lines resulting from gamma irradiation in M6 ''generation. The research was conducted in Paloh Lada Village, Dewantara District, Aceh Utara Regency, Indonesia, from July 2021 to October 2021. The tested genotypes consisted of 8 genotypes, namely Kipas Putih variety (parent variety), Anjasmoro variety (comparison variety), M.1.1.3, M.5.2.1, M.5.2.3, M.1.1.8, M.1.1.9 and M.1.1.17 mutant lines. The results showed that the agronomic diversity of the tested mutants was different compared with the parents and comparison variety. We obtained early maturity and high yielding mutant in M7 ''generation. The mutant lines with high yield and equivalent to its parents was M.1.1.8 with a production of 4.37 tha-1. Mutant lines with early maturity were M.1.1.9, M.5.2.1 and M.1.1.3 lines with a harvesting age of 83 days after planting (DAP).
      PubDate: 2022-02-15
      Issue No: Vol. 14, No. 1 (2022)
  • Trichoderma inoculants and straw compost improved resilience and yield in
           Cu-contaminated rice paddies

    • Authors: Virginia Cuevas, Charina Gracia Banaay
      Abstract: Abstract. Cuevas VC, Banaay CGB. 2022. Trichoderma inoculants and straw compost improved resilience and yield in Cu-contaminated rice paddies. Nusantara Bioscience 14: 1-9. Rice paddies in Marinduque, Philippines, are copper-contaminated from tailings of two mining companies formerly operating in the province. At present, paddy-soil copper concentration ranges from 22-386 mg kg-1. Crops suffer from copper toxicity and water stress due to climate-related events. The field study was conducted to investigate the ability of in situ composted rice straw and Trichoderma microbial inoculant (TMI) to mitigate rice productivity constraints. In treated set-ups, rice straw was scattered on the paddy after harvest. Triple 14 mineral fertilizer was mixed with Trichoderma compost activator, broadcasted over the straws, and subsequently incorporated into the soil during land preparation. Rice seeds were TMI-coated before sowing. Rice straw composting was not done in control set-ups, and seeds were uncoated. Mineral fertilizers were applied to both set-ups. Furthermore, set-ups were categorized based on soil Cu content, such as normal, moderate, and high. Four replicates were made per season and category. In treated paddies, rice leaves did not show yellowing, indicating adequate N mineralization and plant uptake. The difference in yield was significantly higher (81%) in treated paddies compared to control. During severe drought conditions, the mean yield in treated paddies was 1.8 t ha-1, while that of control paddies was zero. The yield was significantly correlated with K inputs mainly by compost in treated paddies. The application of rice straw compost and Trichoderma inoculants can be an adaptive strategy for climate change resilience and mitigation of copper toxicity in crops.
      PubDate: 2022-01-07
      Issue No: Vol. 14, No. 1 (2022)
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