Journal of Science Natural Science最新文献_第8页

Study on the natural habitats of the giant water bug Lethocerus indicus (Lepeletier et Seville, 1775) (Hemiptera : Belostomatidae) contributing to sustainable management of this rare water insect named in the Red Data Book of Vietnam 巨型水虫(leeletier et Seville, 1775)自然栖息地的研究(半翅目:水虫科)，为越南红皮书收录的珍稀水虫的可持续管理提供参考

Journal of Science Natural Science Pub Date : 2021-11-01 DOI: 10.18173/2354-1059.2021-0075

Sakkouna Phommavongsa, Anh Nguyen Phan Hoang, Manh Vu Quang

{"title":"Study on the natural habitats of the giant water bug Lethocerus indicus (Lepeletier et Seville, 1775) (Hemiptera : Belostomatidae) contributing to sustainable management of this rare water insect named in the Red Data Book of Vietnam","authors":"Sakkouna Phommavongsa, Anh Nguyen Phan Hoang, Manh Vu Quang","doi":"10.18173/2354-1059.2021-0075","DOIUrl":"https://doi.org/10.18173/2354-1059.2021-0075","url":null,"abstract":"The study was focused on the natural habitats and distribution of the giant water bug Lethocerus indicus in Lao PDR, with the aims to conserve and breed this rare water insect. The following conclusions were given: Adult giant water bugs were distributed in 5 main natural habitat types, including SC1. Habitat with flowing water such as rivers, streams and canals; SC2. Habitat type with standing or less flowing water such as ponds, lakes and lagoons; SC3. Habitat types such as water rice fields or aquatic plants; SC4. Habitat of standing water or puddles on the edge or inside the rice field; and SC5; and other Habitats include terrestrial, drifting with water, hiding in earthen caves near aquatic habitats. The number of adult giant water bugs decreased in the order of natural habitats studied, as follows SC3 >SC4 >SC2 >SC5 >SC1. The weter rice fields were the most suitable habitat for adult giant water bug. Research results showed that, there are similarities in the distribution of adult male and female in the studied natural habitats. The ratio of adult male to female giant water bug found in the above five studied natural habitats was 1.0 versus 2.3, respectively.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79127333","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

Study on the distribution of Derris trifoliata Lour. in Giao lac Commune, Giao thuy District, Nam dinh Province 三叶木贼的分布研究。在南定省焦土区焦拉克公社

Journal of Science Natural Science Pub Date : 2021-11-01 DOI: 10.18173/2354-1059.2021-0078

Thuy Vuong Ngoc, Lien Nguyen Thi Hong, Loan Tran Thi

{"title":"Study on the distribution of Derris trifoliata Lour. in Giao lac Commune, Giao thuy District, Nam dinh Province","authors":"Thuy Vuong Ngoc, Lien Nguyen Thi Hong, Loan Tran Thi","doi":"10.18173/2354-1059.2021-0078","DOIUrl":"https://doi.org/10.18173/2354-1059.2021-0078","url":null,"abstract":"Derris trifoliata is a species which participate in mangrove ecosystem. Species’s distribution depends on many factors, the most important of which is soil structure. Derris trifoliata grows well on clay loam soil or sandy loam soil. Firm ground is less favorable for true mangrove species, so the abundance found along sea-dykes, coastal areas and aquaculture lagoons is much higher than in mangrove core zone. On sandy soil or light sandy loam soil, when sand percentage is high, plants grow poorly with very low density. Study results show that Derris trifoliata can grow on many different types of substrates, but mostly on soil with sand percentage from 39 to 50%, clay from 39 to 45% and limon about 10%. Derris trifoliata grows near sea dykes and aquaculture lagoons, the nearer it is towards sea, the lower abundance and density is. Other ecological factors such as humus content, total nitrogen, C:N ratio, and salinity also affect the distribution of Derris trifoliata but to a lesser extent. In places with high density of Derris trifoliata, although the amount of humus in the soil is not much, the average nitrogen content is high because Derris trifoliata belongs to Fabaceae family, nodules lumps formed on their roots by Rhizobium can fix nitrogen from atmospheric nitrogen.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"44 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72814089","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

Study on the process of preparing perilla drinks from Perilla frustescens (L.) Britton 用紫苏制备紫苏饮料的工艺研究布里顿

Journal of Science Natural Science Pub Date : 2021-11-01 DOI: 10.18173/2354-1059.2021-0084

Ha Nguyen Thi Thu, Thanh Phan Due, Mo Tong Thi, Thuy Tran Thi

{"title":"Study on the process of preparing perilla drinks from Perilla frustescens (L.) Britton","authors":"Ha Nguyen Thi Thu, Thanh Phan Due, Mo Tong Thi, Thuy Tran Thi","doi":"10.18173/2354-1059.2021-0084","DOIUrl":"https://doi.org/10.18173/2354-1059.2021-0084","url":null,"abstract":"Perilla frutescens (L.) Britton is well known as a herb and medicinal plant in ietnam and some East Asian countries. Perilla drinks is a favorite product in Japan. In Vietnam, researches on processing perilla into beverage and juce are quite limited. In this study, we built a process to prepare a quality perilla drinks to meet the requirements of food safety and hygiene. A suitable ratio of perilla and water for preparing perilla extract was 1 : 3 (kgL). The perilla juice prepared from this extract by supplementation of 15% sucrose and 0.3% citric acid had good sensory score of 18.5 ± 0.05. The content of some active substances such as total phenolic compounds, flavonoid, reducing sugar of the perilla extract reached 5.817 ± 0.172; 5.443 ± 0.016; 1.994 ± 0.003 (mgmL) respectively and had almost no significantly difference than that of the perilla drinks prepare from this extract (4.737 ± 0.0135; 4.750 ± 0.0235; 1.963 ± 0.014 (mgmL). The content of anthocyanin in dry mass of Perilla frustescens (L.) Britton was 0.6011 ± 0.002 (mgg) but it was not detected in the perilla extract and drinks. Antioxidant activity of perilla extract and drinks determined by IC50 on DPPH were 105,46 and 103,92 mgmL respectively. Results of counting total aerobic microbes and coliform showed that a sterilizedpasteurilized perilla drinks met the requirements of food safety and hygiene in 25 days stored at 4 - 30 ᴼC.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87060575","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

The operculate land snail genus Dioryx (Gastropoda: Alycaeidae): Data for Vietnam and an up-to-date checklist of species in the world 有盖蜗牛属Dioryx(腹足纲:田螺科):越南资料和世界最新物种清单

Journal of Science Natural Science Pub Date : 2021-11-01 DOI: 10.18173/2354-1059.2021-0072

Sang Do Duc, Sơn Nguyễn Thành, Hung Nguyen Duc

引用次数: 0

Study on Thelypteridaceae Ching Ex pic. Serm. in the Phia Oac - Phia Den National Park, Cao Bang province 黄龙科植物的研究。Serm。在曹邦省的菲亚橡树-菲亚登国家公园

Journal of Science Natural Science Pub Date : 2021-11-01 DOI: 10.18173/2354-1059.2021-0074

Son Doan Hoang, Hai Do Van, Bach Tran The, Quang Bui Hong, Ha Le Ngoc, Binh Tran Duc, Duong La Anh, Dung Vu Thi

引用次数: 0

An initial overview of ecosystem services from mangrove forests in Viet Nam 越南红树林生态系统服务的初步概述

Journal of Science Natural Science Pub Date : 2021-11-01 DOI: 10.18173/2354-1059.2021-0065

Nga Pham Thi Thuy, Hau Tran Duc, Quyen Nguyen Van

{"title":"An initial overview of ecosystem services from mangrove forests in Viet Nam","authors":"Nga Pham Thi Thuy, Hau Tran Duc, Quyen Nguyen Van","doi":"10.18173/2354-1059.2021-0065","DOIUrl":"https://doi.org/10.18173/2354-1059.2021-0065","url":null,"abstract":"Mangrove forests provide important ecosystem services for nature and human beings, but these ecosystems have been threatened due to anthropogenic activities and climate change. The present study systematically presents ecosystem services based on literature review of published papers, and project reports. It reveals that ecosystem services from mangrove forests are diverse and different among localities. Amongst the three types of ecosystem services, the regulating is the most concerned (accounting for 40% of reviewed literatures), followed by the provisioning (accounting for 39%) and the cultural (accounting for 21%). There are more available data on ecosystem services from mangrove forests in the North and South of Vietnam than that in the Central (24 - 26 vs. 18%). Differences in studies on ecosystem services contribute to the lack of synchronicity in biodiversity conservation and sustainable development of this typical ecosystem in Viet Nam. Also, the present paper details three types of ecosystem services, compared levels of exploitation, and use of ecosystem services from mangroves in different regions. These results are scientific fundamentals for conservation, exploitation, and sustainable utilization of this ecosystem in the eco-social development. In addition, the present study introduces several options for further studies, exploitation of ecosystem services from mangroves in Vietnam, focusing on the connectivity, the stakeholder participation and remote sensing application.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77668037","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: 2

Species diversity of Dao My Stork Garden, Lang Giang district, Bac Giang province 北江省郎江区岛梅鹳园物种多样性

Journal of Science Natural Science Pub Date : 2021-11-01 DOI: 10.18173/2354-1059.2021-0070

Linh Tran Thuy, Son Nguyen Lan Hung, Van Nguyen Thanh, Hong Do Thi

{"title":"Species diversity of Dao My Stork Garden, Lang Giang district, Bac Giang province","authors":"Linh Tran Thuy, Son Nguyen Lan Hung, Van Nguyen Thanh, Hong Do Thi","doi":"10.18173/2354-1059.2021-0070","DOIUrl":"https://doi.org/10.18173/2354-1059.2021-0070","url":null,"abstract":"The study on Dao My Stork Garden with an area of 3 hectares located in Tan Phuc village, Dao My commune, Lang Giang district, Bac Giang province during 2017 - 2018 has identified 32 bird species belonging to 29 genera, 18 families, 7 orders, including 21 resident species, 11 winter migratory species. There is one species listed in the Vietnam Red Data Book (2007) which is Anastomus oscitans. There are 6 species of water birds living and colony nesting in the stork garden: Little Egret (Egretta garzetta), Chineses pond Heron (Ardeola bacchus), Egret Cattle (Bubulcus coromandus), Black-crowned Night Heron (Nycticorax nycticorax), Intermediate Egret (Egretta intermedia) and Asian Openbill (Anastomus oscitans). The water bird species with the highest number of population in breeding season is the Little Egret. There is a stratification of the habitat and nesting areas of water birds according to the vegetation in the stork garden. Birds mainly nest and live on eucalyptus and bamboo trees. Since this stork garden formed on the land is owned by the household, in order to preserve the stork garden for sustainablity, it is necessary to support from the local government and organizations to invest in the restoration of trees in the garden and protecting the stork garden from illegal bird hunting.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85841759","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

Classification and analysis of conserved motifs in the sucrose transporter family in quinoa (Chenopodium quinoa) by bioinformatics approach 用生物信息学方法对藜麦蔗糖转运蛋白家族保守基序进行分类和分析

Journal of Science Natural Science Pub Date : 2021-11-01 DOI: 10.18173/2354-1059.2021-0082

Thu Pham Phuong, Ha Chu Duc, Thao Nguyen Song, H. Tran Thi Thanh

{"title":"Classification and analysis of conserved motifs in the sucrose transporter family in quinoa (Chenopodium quinoa) by bioinformatics approach","authors":"Thu Pham Phuong, Ha Chu Duc, Thao Nguyen Song, H. Tran Thi Thanh","doi":"10.18173/2354-1059.2021-0082","DOIUrl":"https://doi.org/10.18173/2354-1059.2021-0082","url":null,"abstract":"In this study, a total of 29 members of the CqSWEET family in quinoa (Chenopodium quinoa) has been comprehensively investigated by various bioinformatics methods. As the result, we indicated that the CqSWEET proteins were varied from 161 - 428 amino acid residues in size (17,7 - 47,7 kDa in weight). The isoelectric point of these proteins ranged from acid (4.9) to base (9,7), while the majority of the CqSWEET proteins are stable in the test tube. Our analyses also revealed that whole members of the CqSWEET family are hydrophobic, and a large amount of the CqSWEET proteins may localize in the secretory pathways. According to the unrooted phylogenetic tree, the CqSWEET proteins could be clearly classified into 3 distinct groups, as similar as in other higher plant species. Interestingly, the majority of the CqSWEET proteins contained 6 or 7 transmembrane helices. Our results also showed that a total of 4 conserved motifs has occurred in the majority of the CqSWEET family. Take together, our study could provide critical data for further functional characterization of the CaSWEET candidate genes related to the regulation of the growth and development in quinoa plants.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80947481","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

The limits of subkingdom Protozoa in unicellular Eukarya 单细胞真核生物亚界原生动物的界限

Journal of Science Natural Science Pub Date : 2021-11-01 DOI: 10.18173/2354-1059.2021-0079

Bai Thai Tran, Binh Tran Thi Thanh

{"title":"The limits of subkingdom Protozoa in unicellular Eukarya","authors":"Bai Thai Tran, Binh Tran Thi Thanh","doi":"10.18173/2354-1059.2021-0079","DOIUrl":"https://doi.org/10.18173/2354-1059.2021-0079","url":null,"abstract":"According to the five-kingdom system, all unicellular eukaryotes are classified under the kingdom Protista, and multicellular eukaryotes contain only Animals, Plants, and Fungi. This classification is generally not accepted by zoologists. Many zoological textbooks still classify Animals into two large groups: Protozoa and Metazoa. However, the criterion for selecting Protozoa is the specific digestive system of heterotrophic nutrition for animals, thus, the range of Protozoa is often wide, includes many different, far related groups in unicellular eukaryotes. The entire eukaryotic phylogenetic tree (both unicellular and multicellular) built on molecular sequence comparisons of recent genetics indicates that only a few single-celled eukaryotic groups have phylogenetic relationship with the ancestor of multicellular eukaryotes in the animal kingdom. This situation forces a narrowing of the range of protozoan groups. According to principle (1) Kingdom taxa must include all groups of organisms that are monophyletic, i.e. have the same root in the phylogenetic tree of eukaryotes. This principle holds for all taxa above species. (2) Inheriting the traditional perception of considering Animals, Fungi and Plants (including unicellular and multicellular) as kingdom taxons. Protozoa includes 3 groups Choanoflagellata, Filasterea and Ichthyosporea. The article also updates the morphological, biological and taxonomic characteristics of these three groups.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"221 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73831406","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

Study on chromosome number and karyotype in the north taro germplasm preserved at the Plant Resources Center - Vietnamese Academy of Agricultural Sciences 越南农业科学院植物资源中心保存的北芋头种质的染色体数目和核型研究

Journal of Science Natural Science Pub Date : 2021-11-01 DOI: 10.18173/2354-1059.2021-0077

Viet Nguyen Xuan, Anh Pham Thi Viet, Hoa Nguyen Thi Quynh, Mai Le Thi Tuyet, Huyen Vu Thi Bich, Thuy Le Thi

{"title":"Study on chromosome number and karyotype in the north taro germplasm preserved at the Plant Resources Center - Vietnamese Academy of Agricultural Sciences","authors":"Viet Nguyen Xuan, Anh Pham Thi Viet, Hoa Nguyen Thi Quynh, Mai Le Thi Tuyet, Huyen Vu Thi Bich, Thuy Le Thi","doi":"10.18173/2354-1059.2021-0077","DOIUrl":"https://doi.org/10.18173/2354-1059.2021-0077","url":null,"abstract":"Chomosome number and karyotypes of the North taro germplasm collections maintained at The Plant Resources Center were studied for the database of taro germplasms and to assess genetic diversity in taro (Colocasia esculenta Schott) in Vietnam. The results showed that, most of the 250 accessions of collections discovered are diploid (2n = 2x = 28), accounting for 77,2%, only 22,8% of the germplasm collections are triploid (2n = 3x = 42). The frequency of distribution of diploid and triploid taros between the natural geographic sub-region of the Northwest mountainous and the Northeastern mountainous and midland sub-region is similar. The northern taro germplasm is being conserved is cytogenetic diversity expressed in both chromosome sets (diploid and triploid) and 5 different karyotypes. Three of the five karyotypes (diploid karyotype 11 m + 3 sm, 10 m + 3 sm + 1st, and triploid karyotype, 10 m + 4 sm) were detected in the study were not still reported in taro of Vietnam, therefore added data on the diversity of karyotypes in the taro species of our country. The detailed analysis of chromosomes obtained in this study has provided cytogenetic data, contributing to enriching the taro germplasm database, which is meaningful in conservation and evolutionary research, and planning of breeding programs for new cultivar production of this crop to grow in different agroclimatic environments.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"51 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86636317","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