NBU Journal of Plant Sciences最新文献_第3页

http://ir.nbu.ac.in/handle/123456789/4435 http://ir.nbu.ac.in/handle/123456789/4435

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2011.v05i01.002

Katyayani Dutta Choudhury, M. Dutta Choudhury

引用次数: 0

Study on Spikelet Morphology of Some Indian Grasses (Poaceae) 一些印度禾本科植物小穗形态的研究

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2021.v13i01.001

S. Mandal, Aratrika Pal, M. Chowdhury

引用次数: 0

Variation of antioxidant properties and phytochemical constituents of tea cultivated under various agronomic conditions at Terai region of North Bengal 北孟加拉Terai地区不同农艺条件下栽培的茶叶抗氧化特性和植物化学成分的变化

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2008.v02i01.005

T. K. Misra, A. Saha, A. Nanda, P. Mandal

{"title":"Variation of antioxidant properties and phytochemical constituents of tea cultivated under various agronomic conditions at Terai region of North Bengal","authors":"T. K. Misra, A. Saha, A. Nanda, P. Mandal","doi":"10.55734/nbujps.2008.v02i01.005","DOIUrl":"https://doi.org/10.55734/nbujps.2008.v02i01.005","url":null,"abstract":"The studies were conducted during 2007-2008 in three cultivars of tea (Camellia sinensis) namely, TV26, TV29 and Dangri Manipuri Jat, at tea estates of Terai, North Bengal. Commercial standard plucked tea leaves were assayed to determine antioxidants activity and related phytochemical constituents. DPPH was used to determine the antioxidant properties of bud+leaf (B+L), bud+two leaves (B+2L), bud+three leaves (B+3L) and matured leaves (L). Subsequently, total phenolics, flavonols and hydrolysable tannins were estimated using standard methods. The result showed that free-radicals scavenging potentiality and chemical composition varies significantly at different growing conditions and leaf maturation. Statistical analysis showed significant relation between antioxidant and some phytochemical composition of dry tea leaves, among which phenolics (R2 =0.904, P< 0.001), tannins (R2= 0.567, P< 0.05) and flavonols (R2= 0.314, P< 0.05) bear significant correlation. Soil physicochemical parameters like pH (R2=0.537, P< 0.05), nitrogen (R2=0.618, P< 0.01), K2O (R2=0.106, insignificant), P2O5 (R=0.730, P< 0.01), S (R2=0.157, insignificant) and soil moisture (R2=0.745, P< 0.01) influence free-radical scavenging activity in tea leaves. Antioxidant quality of tea varies with maturation stages of leaves and the pattern is specific for a selected varietes. From our observation it may be concluded that antioxidant quality is dependent on some fertility parameters of soil and maturation of leaf. These results suggests that appropriate agronomic practices and proper choice of plucking may help to preserve the tea antioxidant quality.","PeriodicalId":122617,"journal":{"name":"NBU Journal of Plant Sciences","volume":"30 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114105420","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

Free radical scavenging activity of ornamental and edible cultivars of Canna found in Eastern India 在印度东部发现的观赏和食用美人蕉品种的自由基清除活性

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2011.v05i01.006

T. Mishra, A. Goyal, P. Mondal, A. Sen

引用次数: 2

Bacterial strain isolated from the Mango field and identified on the basis of 16S rDNA sequence information and optimization of the alkaline cellulase production 从芒果田分离到一株菌株，根据16S rDNA序列信息进行鉴定，并对其碱性纤维素酶生产工艺进行优化

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2008.v02i01.006

Subhasita Roy, A. Chattopadhyay

{"title":"Bacterial strain isolated from the Mango field and identified on the basis of 16S rDNA sequence information and optimization of the alkaline cellulase production","authors":"Subhasita Roy, A. Chattopadhyay","doi":"10.55734/nbujps.2008.v02i01.006","DOIUrl":"https://doi.org/10.55734/nbujps.2008.v02i01.006","url":null,"abstract":"A bacterial strain was isolated from the soil of mango (Mangifera indica) orchards. The isolate was identified as Paenibacillus ahvei [MTCC 7809] through phylogenetic analysis based on the 16S rDNA gene sequencing and also by conventional biochemical processes. The scanning electron microscopic analysis revealed the morphological details of the strain. The isolate is Gram positive. motile, rod shaped, spore forming bacterium with extreme salt tolerance. It can hydrolyze starch and gelatin, and catalase and oxidase were produced. The cellulase activity of the culture broth was determined by measuring the reducing sugar released from carboxymethyl cellulose (CMC). Different cultural conditions were tested to reach the optimum growth conditions in order to obtain large-scale production of alkaline cellulase for commercial importance. Crude cellulase from Paenibacillus alvei (MTCC 7809) showed activity and stability at moderately high temperature and pH and the activity remained stable at 40°C and pH 8 after 2h of incubation making the strain a good choice for industrial applications. The rDNA sequence of 1509bp is submitted into the NCBI GenBank database (Acession no. EF429201).","PeriodicalId":122617,"journal":{"name":"NBU Journal of Plant Sciences","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128131000","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

Bisphenol A toxicity in aquatic flora: Impacts and possible remediation 水生植物群中的双酚A毒性:影响和可能的补救措施

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2020.v12i01.006

A. Sarkar, Swarnendu Roy

{"title":"Bisphenol A toxicity in aquatic flora: Impacts and possible remediation","authors":"A. Sarkar, Swarnendu Roy","doi":"10.55734/nbujps.2020.v12i01.006","DOIUrl":"https://doi.org/10.55734/nbujps.2020.v12i01.006","url":null,"abstract":"Bisphenol A (BPA), is one of the high volume produced chemical which is extensively used as raw material for polycarbonate and epoxy resin manufacturing. Being one of major used and disposed material from a wide source, traces of BPA have been diagnosed from everywhere. BPA has been identified as an endocrine disruptor compound (EDC) for most of animals, due to structural similarity with hormones, and hinders many physiological functions. This review work focuses on the status of BPA in water bodies of different parts of the world. The review also focuses on the impact of BPA on aquatic plants and its possible remediation. Sub-standardly imposed policies by several countries and failure of water resource governance are rapidly leading towards incautious release of plastics and other BPA associated waste products in environments. BPA pollution affects humans, animals and even plants. Among the aquatic flora, most affected plant groups are the algal groups and macrophytes. At lower BPA concentration, many beneficial bacterial strains also show sensitivity whereas some other strains are known to metabolize or remove BPA from the water bodies. In this connection, several aquatic macrophytes have also been reported to contribute in the removal of BPA from the aquatic ecosystem.","PeriodicalId":122617,"journal":{"name":"NBU Journal of Plant Sciences","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133784054","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

Association of AM fungi in the rhizosphere of Thuja orientalis (L) 东北土根际AM真菌的结合力

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2013.v07i01.001

U. De, R. Das Biswas, Biswanath Chakraborty

引用次数: 0

In vitro antibacterial activity as related to antioxidant property of some ethnomedicinal plants 几种民族药材的体外抗菌活性与抗氧化性能的关系

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2015.v09i01.005

Jayati Saha, P. Sarkar

引用次数: 0

Response of Westiellopsis prolifica Janet. and Scytonema cincinnatum Thuret ex Born et Flah. (Cyanobacteria) to the effect of 2,4-D on growth and nitrogen fixation 增殖威氏绦虫的反应。和蝎尾丝状体(sytonema辛辛纳托姆)。(蓝藻)对2,4- d对生长和固氮的影响

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2009.v03i01.002

M. Shamina, P. V. Madusoodhanan

引用次数: 0

Plant wealth of Darjiling and Sikkim Himalayas vis-à-vis conservation 大吉岭和锡金喜马拉雅地区植物资源与-à-vis保护

NBU Journal of Plant Sciences Pub Date : 1900-01-01 DOI: 10.55734/nbujps.2011.v05i01.004

Á. P. Das, C. Ghosh

{"title":"Plant wealth of Darjiling and Sikkim Himalayas vis-à-vis conservation","authors":"Á. P. Das, C. Ghosh","doi":"10.55734/nbujps.2011.v05i01.004","DOIUrl":"https://doi.org/10.55734/nbujps.2011.v05i01.004","url":null,"abstract":"The richness of the flora of Darjiling Hills along with Sikkim and Nepal parts of the Eastern Himalaya is well known and that has attracted plant lovers, explorers and hunters almost equally for the last three centuries or so. The processes of evolution worked in this part of the Himalayas almost in an undisturbed condition for millions of years assisted by much varied but extremely favourable climatic conditions and has produced innumerable new species, a good proportion of which are still endemic to the region. The vegetation structure and the flora in different parts of this region have developed as per the local climatic make-up. So, when almost tropical vegetation is found on outer low altitude areas, it is sub-alpine to alpine to arctic in high altitude areas especially above 3000 m. Terai and Duars are located at the feet of the hills are maintaining a contiguous rich vegetation. The vegetation scenario in this region is changing very fast during last three or four decades mostly due to anthropogenic activities. Extension of civilisation along with the population explosion lead to the increase in forest extraction, rate of modification of floristic composition, pollution content, soil erosion, plant introduction, clearing of natural vegetation etc. There is evidence that the force of evolution is still active here but the lack of proper corridor (along with other factors mentioned above) for plant migration will certainly cause the weakening of numerous local species and the rate of extinction of species will increase in a logarithmic scale. Like any other part of this planet here also it appears to be one nearly impossible task to save the local biodiversity. Just the declaration of some Protected Areas is not enough. Activities through ecotourism are also affecting the conservation practices. Unless we succeed to conserve the natural vegetation on this planet the entire biosphere will be dead within next 100 years.","PeriodicalId":122617,"journal":{"name":"NBU Journal of Plant Sciences","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115115246","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: 1