The Journal of Agriculture and Development最新文献_第2页

Selection and testing of promising cassava varieties KM568, KM539, KM537 in Phu Yen province 在富安省选育和测试有前途的木薯品种 KM568、KM539 和 KM537

The Journal of Agriculture and Development Pub Date : 2024-02-26 DOI: 10.52997/jad.1.01.2024

Mai T. T. Nguyen, Long Hoang, Kim Hoang, D. N. Nguyen

{"title":"Selection and testing of promising cassava varieties KM568, KM539, KM537 in Phu Yen province","authors":"Mai T. T. Nguyen, Long Hoang, Kim Hoang, D. N. Nguyen","doi":"10.52997/jad.1.01.2024","DOIUrl":"https://doi.org/10.52997/jad.1.01.2024","url":null,"abstract":"Researching and breeding cassava varieties with high starch yield, resistance to major pests and diseases, and suitability to the production conditions of Phu Yen province and ecological regions is important and urgent. The objectives of this study were to select and create cassava varieties with high starch yield (at least 10% higher than controls KM419 and KM94), resistance to major pests and diseases, grade 1 - 2 disease scores for cassava mosaic disease (CMD), and cassava witches broom disease (CWBD). The research method was used according to Vietnam Cassava Program and International Center for Tropical Agriculture (CIAT) standards for technological process of hybrid cassava selection and breeding. The results showed that three promising cassava varieties KM568, KM539, and KM537 were identified. KM568, a hybrid of KM440 x (KM419 x KM539), yielded 54 tons/ha of fresh tubers with a starch content of 28.4% at harvest after 10 months of planting. KM539, a C39* variety, was developed from the original C39 variety from CIAT and yielded 45.9 tons/ha of fresh tubers with a starch content of 27.9%. KM537, a hybrid of (KM419 x KM539) x KM440, yielded 51.3 tons/ha of fresh tubers with a starch content of 28.5%. These three cassava varieties were resistant to CMD level 1.5 and CWBD level 1. KM568, KM539, and KM537 had 8 - 14 tubers/root, 7 - 12 tubers/root, and 7 - 12 tubers/root, respectively. Also, they all achieved the ideal new plant type shape, white root flesh, straight and compact plants, erect stems, short internodes, and less branching. Additionally, the plant height of KM568, KM539, and KM537 was 2.3 - 2.7 m, 2.7 - 3.0 m, and 2.5 - 2.9 m respectively.","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"37 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140429679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of ultrasound-assisted enzymatic extraction of betalains from red beetroot (Beta vulgaris L.) 优化超声辅助酶法提取红甜菜根（Beta vulgaris L.）

The Journal of Agriculture and Development Pub Date : 2023-12-11 DOI: 10.52997/jad.7.06.2023

D. T. Huynh, Thien H. Nguyen, Ngan K. T. Nguyen, Anh N. T. Dang, Thuy T. Le, Dan T. N. Duong, Huan T. Phan

引用次数: 0

Sequencing p72 gene of field strain of African swine fever virus (ASFV) in Vietnam and generation of enhanced immunogenic fusion protein G-p72 potentially expressed as a recombinant antigen in ASFV subunit vaccine 对越南非洲猪瘟病毒（ASFV）野外毒株 p72 基因进行测序并生成增强免疫原性融合蛋白 G-p72，该蛋白可作为 ASFV 亚单位疫苗的重组抗原表达

The Journal of Agriculture and Development Pub Date : 2023-12-11 DOI: 10.52997/jad.4.06.2023

Mai N. Tran, Hoang M. Nguyen, Loc T. Le, Hue T. Doan, Mi M. T. Nguyen, P. X. Dinh, Binh T. Nguyen

{"title":"Sequencing p72 gene of field strain of African swine fever virus (ASFV) in Vietnam and generation of enhanced immunogenic fusion protein G-p72 potentially expressed as a recombinant antigen in ASFV subunit vaccine","authors":"Mai N. Tran, Hoang M. Nguyen, Loc T. Le, Hue T. Doan, Mi M. T. Nguyen, P. X. Dinh, Binh T. Nguyen","doi":"10.52997/jad.4.06.2023","DOIUrl":"https://doi.org/10.52997/jad.4.06.2023","url":null,"abstract":"Protein p72 is the major surface protein of African swine fever virus (ASFV), which is immunogenic and can prime the host to elicit a protective immune response, while G protein is the surface glycoprotein of vesicular stomatitis virus (VSV), which is well-known to be a strong antigen to stimulate an effective humoral immunity. The aim of this study was to sequence full length p72 gene of a field strain of ASFV causing typical ASF in Dong Nai province in 2020 and fuse this p72 gene with VSV G gene to generate a recombinant fusion gene G-p72 that could simultaneously express both proteins and stimulate a better host immune response than p72 expression alone. The sequence of the gene showed 99.59% nucleotide sequence similarity to an ASFV isolate from China. The PCR was employed to produce the recombinant G-p72 gene, which was cloned into plasmid pET28a, followed by transformation into E. coli BL21 (DE3) for protein expression. The G-p72 expression was induced at 37°C and 28°C for 6 and 16 h, respectively. The expression showed that G-p72 was observed at 28°C for 16 h. In summary, the full length p72 gene of a field strain of ASFV was successfully sequenced and expressed as the recombinant G-p72 protein in E. coli BL21 (DE3). The expression level of the G-p72 fusion should be optimized and the immunogenicity of the recombinant protein should be examined in futher studies.","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"10 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138980347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of different doses of micro-organic and phosphorus fertilizers on growth and yield of red turmeric (Curcuma longa L.) 不同剂量的微生物肥料和磷肥对红姜黄（Curcuma longa L.）生长和产量的影响

The Journal of Agriculture and Development Pub Date : 2023-12-11 DOI: 10.52997/jad.1.06.2023

Trang T. H. Nguyen, Thinh V. Tran, Binh V. Tran, Tri D. Q. Phan, Linh D. Dinh, Son T. T. Le, Quang T. Le, Truong V. Nguyen

{"title":"Effects of different doses of micro-organic and phosphorus fertilizers on growth and yield of red turmeric (Curcuma longa L.)","authors":"Trang T. H. Nguyen, Thinh V. Tran, Binh V. Tran, Tri D. Q. Phan, Linh D. Dinh, Son T. T. Le, Quang T. Le, Truong V. Nguyen","doi":"10.52997/jad.1.06.2023","DOIUrl":"https://doi.org/10.52997/jad.1.06.2023","url":null,"abstract":"The objective of the study was to determine the appropriate doses of micro-organic and phosphorus fertilizers for good growth, high rhizomes yield and enhancing the economic efficiency of red turmeric cultivated in gray soil in Thu Duc city. The two factor experiment was laid out in a split-plot design with three replications. The main plots consisted of four doses of phosphorus fertilizer as 30, 60 (control), 90, & 120 kg P2O5/ha. The sub-plots included three doses of micro-organic fertilizer (2, 4, & 6 tons/ha) and a control with cow dung of 10 tons/ha. A common dose of 500 kg lime, 90 kg N, 120 kg K2O/ha was applied in all treatments The results showed that red turmeric was applied at the dose of 120 kg P2O5 combined with 6 tons of micro-organic fertilizer/ha exhibited the highest growth, yield and economic outcomes including a plant height of 41.2 cm, stem diameter of 16.2 mm, leaf length of 24.4 cm, leaf width of 8.5 cm, leaf count of 7.0, soil plant analysis development index of 35.6, the profit of VND 386.32 million/ha, and the benefit cost ratio of 2.4.","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"53 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138982078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sex reversal using 17 α-methyltestosterone immersion and its effect on sex reversal and growth performance of Nile tilapia (Oreochromis niloticus L., 1758) 使用 17 α-甲基睾酮浸泡尼罗罗非鱼（Oreochromis niloticus L., 1758）进行性逆转及其对性逆转和生长性能的影响

The Journal of Agriculture and Development Pub Date : 2023-12-11 DOI: 10.52997/jad.3.06.2023

Dang H. Nguyen, Nam V. Nguyen, Tuan V. Vo, Nhung T. H. Nguyen, Hien T. Nguyen

{"title":"Sex reversal using 17 α-methyltestosterone immersion and its effect on sex reversal and growth performance of Nile tilapia (Oreochromis niloticus L., 1758)","authors":"Dang H. Nguyen, Nam V. Nguyen, Tuan V. Vo, Nhung T. H. Nguyen, Hien T. Nguyen","doi":"10.52997/jad.3.06.2023","DOIUrl":"https://doi.org/10.52997/jad.3.06.2023","url":null,"abstract":"The study aimed to evaluate the optimal dose of 17 α-methyltestosterone (MT) and stocking density using immersion method for maximum survival, masculinization rates and growth performance of Nile tilapia (Oreochromis niloticus). The experimental design employed complete randomization including three concentrations of 17 α-methyltestosterone (1.5, 2.0, and 2.5 mg/L) and three stocking densities of 500, 750, and 1000 fish/L and a control group, arranged in three replicates. The control groups consisted of 3 stocking densities of 500, 750, & 1000 fish/L and fish were kept in glass aquaria containing MT-free water. Fish were exposed to MT solution for 2 h, and the fish were then transferred to nursery in hapas in earthen ponds at a density of 1,000 fish/m2 for 60 days. After the hormone treatment and 60 days of rearing, the highest survival rate was found in the control group. The male ratios in the MT treatments ranged from 78.9 to 91.1% and were statistically higher than that in the control (55.1%) (P < 0.05). The most effective doses and stocking density in sex-reversal of the tilapia fry using immersion method were 2.0 mg 17 α-MT/L and 750 fish/L, respectively. The mean weight and length of fish in the MT treatments were greater than those in the control treatment, although the difference was not statistically significant (P > 0.05). The results also showed that the average weight of experimental fish was directly proportional to the hormone concentration but inversely proportional to the stocking density. Based on the study findings, the recommended dose for producing maximum mono-sex male tilapia is 2.0 mg 17 α-MT /L, and the most suitable stocking density is 750 fish/L.","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"124 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138978633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Friedel-Crafts sulfonylation catalyzed by chloroaluminate ionic liquid immobilized on magnetic nanoparticles: Optimization by response surface methodology 固定在磁性纳米粒子上的氯铝酸盐离子液体催化的 Friedel-Crafts 磺化反应：响应面方法优化

The Journal of Agriculture and Development Pub Date : 2023-12-11 DOI: 10.52997/jad.8.06.2023

Lan N. T. Nguyen, Ngan T. T. Luu, Huy H. Le, Viet B. Nguyen, Ha T. T. Phan, Thi X. T. Luu

引用次数: 0

Treatment of sludge from intensive whiteleg shrimp farming using a sequencing batch reactor 使用序批式反应器处理集约化南美白对虾养殖产生的污泥

The Journal of Agriculture and Development Pub Date : 2023-12-11 DOI: 10.52997/jad.2.06.2023

Tran T. Q. Cao, Tu P. C. Nguyen, Ha N. Nguyen

引用次数: 0

Prevalence of dermatophytosis and Malassezia infection in dogs and cats in Thonglor Bangkok Pet Hospital in Ho Chi Minh City, Vietnam 越南胡志明市 Thonglor Bangkok 宠物医院猫狗皮癣病和马拉色菌感染的流行情况

The Journal of Agriculture and Development Pub Date : 2023-12-11 DOI: 10.52997/jad.5.06.2023

Trung T. Nguyen, Thuong T. Nguyen, Khanh N. Dinh

{"title":"Prevalence of dermatophytosis and Malassezia infection in dogs and cats in Thonglor Bangkok Pet Hospital in Ho Chi Minh City, Vietnam","authors":"Trung T. Nguyen, Thuong T. Nguyen, Khanh N. Dinh","doi":"10.52997/jad.5.06.2023","DOIUrl":"https://doi.org/10.52997/jad.5.06.2023","url":null,"abstract":"Malassezia yeasts are occasional human and animal skin organisms that commensally act as pathogens, while dermatophytes are common fungi in many clinics and hospitals. The aim of this study was to evaluate the prevalence of dermatophytosis and Malassezia infections in dogs and cats, and the effect of treatments. The study was carried out from December 2022 to May 2023 in Thonglor Bangkok Pet Hospital, Ho Chi Minh City, Vietnam. Total 208 cases visited the hospital, in which 32 cases of otitis and 53 dermatitis were recorded. Sterile cotton swabs were used to collect the aural samples from 32 cases, then observed under the microscope to detect the presence and population of Malassezia yeasts. In 53 dermatitis cases, adhesive tape impressions (ATI) methods and fungal culture were used to identify the species of dermatophytes and Malassezia dermatitis. The results showed that Malassezia was isolated from 24 cases, including 23 Malassezia otitis and 1 Malassezia dermatitis. However, there was only one positive case with dermatophyte by two methods.Therefore, dermatophytosis could not be concluded due to the small number of positive cases. Meanwhile, Malassezia infection occurred mainly in dogs rather than cats at every age, and the infected rates were found more in exotic animals than in domestic animals and usually in males than females. The effect of treatments illustrated the significant improvement in Malassezia otitis by using Epiotic solution combined with Oridemyl ear drop. Moreover, great improvement was evident in dermatophytosis therapy with Itraconazole.","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"16 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138980883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of essential oil extraction process from Piper nigrum L. by-products and investigation of its biological activities 从胡椒副产品中优化精油提取工艺并研究其生物活性

The Journal of Agriculture and Development Pub Date : 2023-12-11 DOI: 10.52997/jad.6.06.2023

Hanh T. Phan, Hang S. N. Vuong, Anh T. Ha, Anh V. T. Nguyen, Ly P. T. Trinh, Biê´t V. Huỳnh, Toan Q. Truong, Dong T. N. Le

{"title":"Optimization of essential oil extraction process from Piper nigrum L. by-products and investigation of its biological activities","authors":"Hanh T. Phan, Hang S. N. Vuong, Anh T. Ha, Anh V. T. Nguyen, Ly P. T. Trinh, Biê´t V. Huỳnh, Toan Q. Truong, Dong T. N. Le","doi":"10.52997/jad.6.06.2023","DOIUrl":"https://doi.org/10.52997/jad.6.06.2023","url":null,"abstract":"Black pepper (Piper nigrum L.) is an industrial crop commonly grown in Vietnam. Besides its economic value, its processing released large amounts of by-products into the environment including leaves, flatterned seeds, and seed-bearing branches. The objective of this study was to optimize the extraction of essential oil from the mixture of three black pepper by-products and evaluate its biological activities in order to exploit the potential value of the by-products. The essential oils were extracted by hydrodistillation in which the extraction conditions including extraction time, water to feed ratio, and ultrasonic pretreated time were optimized. The results showed that the highest essential oil yield was achieved after 4 h of extraction at a water to feed ratio of 10:1, and 10 min of ultrasonic pre-treament. Isospathulenol, β-selinene, caryophyllene, α-pinene, and α-copaene were identified as the main components of the essential oil as a result of chemical composition analysis using gas chromatography mass spectrometry. The essential oils exhibited 2,2-Diphenyl-1-picrylhydrazyl radical scavenging capacity with an IC50 value of 4.205 mg/mL and antibacterial capacity against four strains of bacteria, including Bacillus spizizenii, Bacillus cereus, Staphylococcus aureus and Salmonella enterica with the diameters of inhibition zone of 11.37 mm, 4.12 mm, 7.75 mm, 5.37 mm, respectively.","PeriodicalId":250563,"journal":{"name":"The Journal of Agriculture and Development","volume":"7 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138979795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Farming status, economic and technical efficiency of agroforestry models at Nui Dai, An Giang province 安江省义代农林业模式的经营现状及经济技术效益

The Journal of Agriculture and Development Pub Date : 2023-08-25 DOI: 10.52997/jad.3.04.2023

N. Nguyen, Thao P. Pham, N. Pham, D. T. Vo

引用次数: 0