Pub Date : 2021-06-22DOI: 10.3329/bjpt.v28i1.54213
S. Dong, Akm Haque Haque
Bangladesh lies in Indian subcontinent, an area rich in Pteris species. However, so far there is no modern account on the species diversity of Pteris in Bangladesh. Based on a thorough study of literature and limited specimens available to us, we currently recognize 15 species of Pteris in Bangladesh. Among these species, P. giasii is currently known only from Bangladesh; P. longipinnula, which has not been collected since 1858, was recently rediscovered in Sylhet. Pteris cretica, P. pellucida, P. quadriaurita var. quadriaurita, and P. quadriaurita var. setigera are excluded for the fern flora of Bangladesh. To facilitate the recognition of species, a key to species and brief notes for each species are provided. Bangladesh J. Plant Taxon. 28(1): 131-140, 2021 (June)
{"title":"A taxonomic study on Pteris L. (Pteridaceae) of Bangladesh","authors":"S. Dong, Akm Haque Haque","doi":"10.3329/bjpt.v28i1.54213","DOIUrl":"https://doi.org/10.3329/bjpt.v28i1.54213","url":null,"abstract":"Bangladesh lies in Indian subcontinent, an area rich in Pteris species. However, so far there is no modern account on the species diversity of Pteris in Bangladesh. Based on a thorough study of literature and limited specimens available to us, we currently recognize 15 species of Pteris in Bangladesh. Among these species, P. giasii is currently known only from Bangladesh; P. longipinnula, which has not been collected since 1858, was recently rediscovered in Sylhet. Pteris cretica, P. pellucida, P. quadriaurita var. quadriaurita, and P. quadriaurita var. setigera are excluded for the fern flora of Bangladesh. To facilitate the recognition of species, a key to species and brief notes for each species are provided. \u0000Bangladesh J. Plant Taxon. 28(1): 131-140, 2021 (June)","PeriodicalId":55590,"journal":{"name":"Bangladesh Journal of Plant Taxonomy","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44475975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-22DOI: 10.3329/bjpt.v28i1.54204
M. Galkina, O. Razumova, I. Yatsenko, O. Yatsenko, Y. Vinogradova
Earlier, we have established that the European blackjack, which in many literary sources is cited as an invasive North American Bidens connata, was described by Carl Warnstorf back in 1895 as B. decipiens and had a hybrid origin (B. frondosa × B. cernua). In this study, we continue to compare the genomes of B. connata and B. decipiens by molecular genetics and cytological methods. The objects are the F1 offsprings of B. frondosa, B. connata, and B. cernua collected in 2018 from Minnesota and Wisconsin (USA), grown from seeds in the greenhouse conditions of N.V. Tsitsin Main Botanical Garden of Russian Academy of Sciences, as well as samples of B. decipiens, B. frondosa and B. cernua collected from Eastern Europe (Belarus and European Russia). The nucleotide sequences of nuclear (ITS 1–2) and chloroplast (trnL– trnF and rpl32–trnL) DNA were studied. Analysis of the ITS 1–2 site showed that B. connata individuals of North America are not hybrids. Analysis of the chloroplast DNA regions confirmed that both taxa, B. connata and B. decipiens, are evolutionarily close to B. cernua. Bangladesh J. Plant Taxon. 28(1): 1-10, 2021 (June)
{"title":"Molecular evidence for the status of Bidens connata Muhl. ex Willd. and B. decipiens Warnst. in the old and new World","authors":"M. Galkina, O. Razumova, I. Yatsenko, O. Yatsenko, Y. Vinogradova","doi":"10.3329/bjpt.v28i1.54204","DOIUrl":"https://doi.org/10.3329/bjpt.v28i1.54204","url":null,"abstract":"Earlier, we have established that the European blackjack, which in many literary sources is cited as an invasive North American Bidens connata, was described by Carl Warnstorf back in 1895 as B. decipiens and had a hybrid origin (B. frondosa × B. cernua). In this study, we continue to compare the genomes of B. connata and B. decipiens by molecular genetics and cytological methods. The objects are the F1 offsprings of B. frondosa, B. connata, and B. cernua collected in 2018 from Minnesota and Wisconsin (USA), grown from seeds in the greenhouse conditions of N.V. Tsitsin Main Botanical Garden of Russian Academy of Sciences, as well as samples of B. decipiens, B. frondosa and B. cernua collected from Eastern Europe (Belarus and European Russia). The nucleotide sequences of nuclear (ITS 1–2) and chloroplast (trnL– trnF and rpl32–trnL) DNA were studied. Analysis of the ITS 1–2 site showed that B. connata individuals of North America are not hybrids. Analysis of the chloroplast DNA regions confirmed that both taxa, B. connata and B. decipiens, are evolutionarily close to B. cernua. \u0000Bangladesh J. Plant Taxon. 28(1): 1-10, 2021 (June)","PeriodicalId":55590,"journal":{"name":"Bangladesh Journal of Plant Taxonomy","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43054225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-22DOI: 10.3329/bjpt.v28i1.54207
Saleha Khan, S. Sultana, G. M. Hossain, Shayla Sharmin Shetu, A. Rahim
This study represents comprehensive taxonomic information on current floristic composition in the semi-natural campus area of Jahangirnagar University. This study reveals that this campus area harbours a total of 917 species belonging to 574 genera and 145 families of vascular plants. 70.34% of these species are wild and the rest are cultivated/planted. 63.79% of the species are native and 36.21% are exotic to Bangladesh. Pteridophytes and Gymnosperms are represented by 22 and 12 species, respectively, whereas, Angiosperms by 883 species. Magnoliopsida (dicotyledons) and Liliopsida (monocotyledons) are composed of 618 and 265 species, respectively. The family Poaceae with 89 species is the largest, which is followed by Fabaceae with 44 species and Asteraceae with 40 species. Most of the species are herbs (56.16%) and growing in diverse habitats. All species are economically or ecologically important, but mostly as medicinal, ornamental, fodder and forage, fruit, vegetable, timber and fuel wood. The study area houses 15 plant species, previously listed as threatened to Bangladesh. Thus, the study area is floristically rich in respect to its number of plant species belonging to different groups and its size. This area might serve as a campus-based excellent center of biodiversity conservation by strengthening the existing management and adopting necessary policies and strategies. Bangladesh J. Plant Taxon. 28(1): 27-60, 2021 (June)
{"title":"Floristic composition of Jahangirnagar University Campus - A semi-natural area of Bangladesh","authors":"Saleha Khan, S. Sultana, G. M. Hossain, Shayla Sharmin Shetu, A. Rahim","doi":"10.3329/bjpt.v28i1.54207","DOIUrl":"https://doi.org/10.3329/bjpt.v28i1.54207","url":null,"abstract":"This study represents comprehensive taxonomic information on current floristic composition in the semi-natural campus area of Jahangirnagar University. This study reveals that this campus area harbours a total of 917 species belonging to 574 genera and 145 families of vascular plants. 70.34% of these species are wild and the rest are cultivated/planted. 63.79% of the species are native and 36.21% are exotic to Bangladesh. Pteridophytes and Gymnosperms are represented by 22 and 12 species, respectively, whereas, Angiosperms by 883 species. Magnoliopsida (dicotyledons) and Liliopsida (monocotyledons) are composed of 618 and 265 species, respectively. The family Poaceae with 89 species is the largest, which is followed by Fabaceae with 44 species and Asteraceae with 40 species. Most of the species are herbs (56.16%) and growing in diverse habitats. All species are economically or ecologically important, but mostly as medicinal, ornamental, fodder and forage, fruit, vegetable, timber and fuel wood. The study area houses 15 plant species, previously listed as threatened to Bangladesh. Thus, the study area is floristically rich in respect to its number of plant species belonging to different groups and its size. This area might serve as a campus-based excellent center of biodiversity conservation by strengthening the existing management and adopting necessary policies and strategies. \u0000Bangladesh J. Plant Taxon. 28(1): 27-60, 2021 (June)","PeriodicalId":55590,"journal":{"name":"Bangladesh Journal of Plant Taxonomy","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44046010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-22DOI: 10.3329/bjpt.v28i1.54221
Usama Salama, Gamal M. A. Lashin, E. Abdelhaliem, Gehad A. A. Hamouda
Thirty six moss species were recorded from Daqahlia province, Nile Delta. Weissia perligulata Flow. (Pottiaceae) was new record to Afr1. In addition, Hyophila involute (Hook.) Jaeg., (Pottiaceae), Ptychostomum arcticum (R. Brown) J. R. Spence ex Holyoak & N. Pederson and P. cyclophyllum (Schwagr) J. R. Spence (Bryaceae) were new records for Egypt. Fifteen species were new to Nile delta. This raised the number of identified moss taxa recorded from Egypt up to 192 taxa, from Nile delta 51 taxa and Daqahlia province 39 taxa. Data on the up-to-date classification, habitats, voucher specimens and distribution of the enumerated species and the descriptions of the new records including the photos have been provided. Bangladesh J. Plant Taxon. 28(1): 257-270, 2021 (June)
在尼罗河三角洲的达卡利亚省记录了三十六种苔藓。佩里古拉塔流。（Pottiaceae）是Afr1的新记录。此外，Hyophila渐开线（Hook.）Jaeg。，（Pottiaceae）、Ptychostomum arcticum（R.Brown）J.R.Spence ex Holyoak&N.Pederson和P.cyclophyllum（Schwagr）J.R.Spence（Bryceae）是埃及的新记录。尼罗河三角洲有15个新物种。这使埃及记录的已鉴定苔藓分类群数量增加到192个，其中尼罗河三角洲51个分类群和达赫利亚省39个分类群。已提供有关所列举物种的最新分类、栖息地、凭证标本和分布的数据，以及包括照片在内的新记录的描述。孟加拉国植物分类学杂志。2021年6月28日（1）：257-270
{"title":"Mosses of Daqahlia Province with one new record for Africa and three new records for Egypt","authors":"Usama Salama, Gamal M. A. Lashin, E. Abdelhaliem, Gehad A. A. Hamouda","doi":"10.3329/bjpt.v28i1.54221","DOIUrl":"https://doi.org/10.3329/bjpt.v28i1.54221","url":null,"abstract":"Thirty six moss species were recorded from Daqahlia province, Nile Delta. Weissia perligulata Flow. (Pottiaceae) was new record to Afr1. In addition, Hyophila involute (Hook.) Jaeg., (Pottiaceae), Ptychostomum arcticum (R. Brown) J. R. Spence ex Holyoak & N. Pederson and P. cyclophyllum (Schwagr) J. R. Spence (Bryaceae) were new records for Egypt. Fifteen species were new to Nile delta. This raised the number of identified moss taxa recorded from Egypt up to 192 taxa, from Nile delta 51 taxa and Daqahlia province 39 taxa. Data on the up-to-date classification, habitats, voucher specimens and distribution of the enumerated species and the descriptions of the new records including the photos have been provided. \u0000Bangladesh J. Plant Taxon. 28(1): 257-270, 2021 (June)","PeriodicalId":55590,"journal":{"name":"Bangladesh Journal of Plant Taxonomy","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49595388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-06-22DOI: 10.3329/bjpt.v28i1.54212
M. M. Alqahtani, M. A. Ali, M. Rahman, Fahad Al Hemaid, S. Kambhar, Joongku Lee
The Internal Transcribed Spacers (ITS) sequences of nuclear ribosomal DNA (nrDNA) are commonly used in plant molecular phylogenetics for the molecular based taxonomic identification and DNA barcoding because of shorter length and easy to amplify by using the universal primers, and further has discrimination ability to distinguish the taxon at lower taxonomic level. The present molecular phylogenetic analysis of ITS nrDNA sequences focuses to determine the taxonomic status of an unresolved medicinally important species Euphorbia schimperiana Scheele of the family Euphorbiaceae reported from Saudi Arabia. The combined length of the entire ITS region in E. schimperiana is 644 nucleotides. The study reveals that E. schimperiana shows a close proximity with the members of the subgenus Esula. Bangladesh J. Plant Taxon. 28(1): 125-130, 2021 (June)
{"title":"Molecular authentication of Euphorbia schimperiana Scheele using internal transcribed spacer sequences of nuclear ribosomal DNA","authors":"M. M. Alqahtani, M. A. Ali, M. Rahman, Fahad Al Hemaid, S. Kambhar, Joongku Lee","doi":"10.3329/bjpt.v28i1.54212","DOIUrl":"https://doi.org/10.3329/bjpt.v28i1.54212","url":null,"abstract":"The Internal Transcribed Spacers (ITS) sequences of nuclear ribosomal DNA (nrDNA) are commonly used in plant molecular phylogenetics for the molecular based taxonomic identification and DNA barcoding because of shorter length and easy to amplify by using the universal primers, and further has discrimination ability to distinguish the taxon at lower taxonomic level. The present molecular phylogenetic analysis of ITS nrDNA sequences focuses to determine the taxonomic status of an unresolved medicinally important species Euphorbia schimperiana Scheele of the family Euphorbiaceae reported from Saudi Arabia. The combined length of the entire ITS region in E. schimperiana is 644 nucleotides. The study reveals that E. schimperiana shows a close proximity with the members of the subgenus Esula. Bangladesh J. Plant Taxon. 28(1): 125-130, 2021 (June)","PeriodicalId":55590,"journal":{"name":"Bangladesh Journal of Plant Taxonomy","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42036771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-11DOI: 10.3329/bjpt.v27i2.50669
S. Adeniran, A. Kadiri, J. Olowokudejo
This article assessed midrib anatomical description of Isolona Dunal. And Monodora Engl. (Annonaceae) from West-Central Africa. Twelve species of tribe Monodoreae were investigated on the basis of micromorphology of midrib characters with the aid of light microscopy. The study provided important taxonomic characters which aid delineation of inter and infrageneric species within the duo genera. The generic features include centrally positioned, open collateral vascular bundle and furrow shaped midribs which are diagnostic to the genera.U shaped vascular bundles are present in most of the species with inviginating or expanded endings while marginal traces vary from 2 to 4. The presence of keel protrusion at abaxial surface established a closer affinity among M. angolensis, M. crispata, and M undulata with additional features species were delimited. Other variable useful features of midrib encountered are trichomes, parenchyma, collenchyma and sclerenchyma, and adaxial and abaxial shape. The midrib characters have been used to prepare an indented dichotomous key to delimit the species in the genera studied. Bangladesh J. Plant Taxon. 27(2): 283-291, 2020 (December)
{"title":"Comparative midrib anatomy of Monodora Dunal. and Isolona Engl. (Annonaceae) from West-central Africa","authors":"S. Adeniran, A. Kadiri, J. Olowokudejo","doi":"10.3329/bjpt.v27i2.50669","DOIUrl":"https://doi.org/10.3329/bjpt.v27i2.50669","url":null,"abstract":"This article assessed midrib anatomical description of Isolona Dunal. And Monodora Engl. (Annonaceae) from West-Central Africa. Twelve species of tribe Monodoreae were investigated on the basis of micromorphology of midrib characters with the aid of light microscopy. The study provided important taxonomic characters which aid delineation of inter and infrageneric species within the duo genera. The generic features include centrally positioned, open collateral vascular bundle and furrow shaped midribs which are diagnostic to the genera.U shaped vascular bundles are present in most of the species with inviginating or expanded endings while marginal traces vary from 2 to 4. The presence of keel protrusion at abaxial surface established a closer affinity among M. angolensis, M. crispata, and M undulata with additional features species were delimited. Other variable useful features of midrib encountered are trichomes, parenchyma, collenchyma and sclerenchyma, and adaxial and abaxial shape. The midrib characters have been used to prepare an indented dichotomous key to delimit the species in the genera studied. \u0000Bangladesh J. Plant Taxon. 27(2): 283-291, 2020 (December)","PeriodicalId":55590,"journal":{"name":"Bangladesh Journal of Plant Taxonomy","volume":"27 1","pages":"283-291"},"PeriodicalIF":0.9,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42925655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-11DOI: 10.3329/bjpt.v27i2.50661
Almujaddade Alfasane, A. Hassan, Rauf Ahmed Bhuiyan
A new species, Utricularia rosettifolia Alfasane & Hassan (Lentibulariaceae), is described with illustration. Detailed taxonomic description including information on type specimens, flowering and fruiting time, ecology, and distribution in Bangladesh are provided. The diagnostic characters of this species and comparison with its closest one are also provided. Bangladesh J. Plant Taxon. 27(2): 205-211, 2020 (December)
{"title":"Utricularia rosettifolia Alfasane & Hassan sp. nov. (Lentibulariaceae) - A new species from Bangladesh","authors":"Almujaddade Alfasane, A. Hassan, Rauf Ahmed Bhuiyan","doi":"10.3329/bjpt.v27i2.50661","DOIUrl":"https://doi.org/10.3329/bjpt.v27i2.50661","url":null,"abstract":"A new species, Utricularia rosettifolia Alfasane & Hassan (Lentibulariaceae), is described with illustration. Detailed taxonomic description including information on type specimens, flowering and fruiting time, ecology, and distribution in Bangladesh are provided. The diagnostic characters of this species and comparison with its closest one are also provided. \u0000Bangladesh J. Plant Taxon. 27(2): 205-211, 2020 (December)","PeriodicalId":55590,"journal":{"name":"Bangladesh Journal of Plant Taxonomy","volume":"27 1","pages":"205-211"},"PeriodicalIF":0.9,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49286922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-11DOI: 10.3329/BJPT.V27I2.50676
Robayda Khanam, Saleha Khan
This study provides the taxonomic data on 168 plant species belonging to 96 genera and 23 families of Liliopsida (monocotyledons) extant in Narsingdi district of Bangladesh. These species are mostly comprised of herbs (90.48%), followed by trees and shrubs (4.76% each). Poaceae with 66 species under 37 genera is the best represented family, followed by Cyperaceae with 26 species of seven genera, Araceae with 16 species of 11 genera, Commelinaceae with 11 species of four genera and Arecaceae with 10 species of eight genera. Cyperus with 13 species appears as the largest genus, which is followed by Panicum with nine species, Digitaria with six species, and Commelina and Dioscorea with five species each. The six upazilas of this district are 39.77% similar in the species composition of their Liliopsida, but the similarity between the pairs of upazilas varies from 6.45% to 32.31%. Roadside and fallow land habitats share the highest similarity (36.84%) in species composition. Total 117 species are distinguished as economically useful. This study suggests for implementation of necessary measures in order to minimize the major threats to this plant group and to favor its sustainable development in the study area. Bangladesh J. Plant Taxon. 27(2): 391-405, 2020 (December)
{"title":"Angiosperms in Narsingdi district of Bangladesh: Class Liliopsida","authors":"Robayda Khanam, Saleha Khan","doi":"10.3329/BJPT.V27I2.50676","DOIUrl":"https://doi.org/10.3329/BJPT.V27I2.50676","url":null,"abstract":"This study provides the taxonomic data on 168 plant species belonging to 96 genera and 23 families of Liliopsida (monocotyledons) extant in Narsingdi district of Bangladesh. These species are mostly comprised of herbs (90.48%), followed by trees and shrubs (4.76% each). Poaceae with 66 species under 37 genera is the best represented family, followed by Cyperaceae with 26 species of seven genera, Araceae with 16 species of 11 genera, Commelinaceae with 11 species of four genera and Arecaceae with 10 species of eight genera. Cyperus with 13 species appears as the largest genus, which is followed by Panicum with nine species, Digitaria with six species, and Commelina and Dioscorea with five species each. The six upazilas of this district are 39.77% similar in the species composition of their Liliopsida, but the similarity between the pairs of upazilas varies from 6.45% to 32.31%. Roadside and fallow land habitats share the highest similarity (36.84%) in species composition. Total 117 species are distinguished as economically useful. This study suggests for implementation of necessary measures in order to minimize the major threats to this plant group and to favor its sustainable development in the study area. \u0000Bangladesh J. Plant Taxon. 27(2): 391-405, 2020 (December)","PeriodicalId":55590,"journal":{"name":"Bangladesh Journal of Plant Taxonomy","volume":"27 1","pages":"391-405"},"PeriodicalIF":0.9,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43550782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-11DOI: 10.3329/bjpt.v27i2.50666
Yılmaz Aykut
Turkey with 18 oak (Quercus) species is one of the richest country according to species number and diversity. The most important reason of the species diversity in Turkey is its location and geomorphological structure which increase climatic effects and seperate Turkey into different phytogeographic regions. Furthermore, hybridization behaviours which frequently observed between oak species, genetic drift, gene flow and ecological factors cause morphological variations in the plants species. All of these factors make it difficult to define the species concept for plant groups like oaks. Therefore, the region covering 18S rRNA gene/ ITS1/ 5.8S rRNA gene/ ITS2/ 25S rRNA gene and secondly intergenic spacer (IGS)/ 5S rRNA gene for barcoding were obtained from genbank and used as a useful tool for the determination and solution of the phylogenetic relations of taxonomically problematic species, also these barcoding regions were compared with each other according to species recognition ability for oak species. As a result, it can be stated that both barcoding regions have high variable sites based on sequence information to identify the species and evaluate relationships of species studied. Bangladesh J. Plant Taxon. 27(2): 261-271, 2020 (December)
{"title":"The importance in DNA barcoding of the regions which is covering rRNA genes and its sequences in the genus Quercus L.","authors":"Yılmaz Aykut","doi":"10.3329/bjpt.v27i2.50666","DOIUrl":"https://doi.org/10.3329/bjpt.v27i2.50666","url":null,"abstract":"Turkey with 18 oak (Quercus) species is one of the richest country according to species number and diversity. The most important reason of the species diversity in Turkey is its location and geomorphological structure which increase climatic effects and seperate Turkey into different phytogeographic regions. Furthermore, hybridization behaviours which frequently observed between oak species, genetic drift, gene flow and ecological factors cause morphological variations in the plants species. All of these factors make it difficult to define the species concept for plant groups like oaks. Therefore, the region covering 18S rRNA gene/ ITS1/ 5.8S rRNA gene/ ITS2/ 25S rRNA gene and secondly intergenic spacer (IGS)/ 5S rRNA gene for barcoding were obtained from genbank and used as a useful tool for the determination and solution of the phylogenetic relations of taxonomically problematic species, also these barcoding regions were compared with each other according to species recognition ability for oak species. As a result, it can be stated that both barcoding regions have high variable sites based on sequence information to identify the species and evaluate relationships of species studied. \u0000Bangladesh J. Plant Taxon. 27(2): 261-271, 2020 (December)","PeriodicalId":55590,"journal":{"name":"Bangladesh Journal of Plant Taxonomy","volume":"27 1","pages":"261-271"},"PeriodicalIF":0.9,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42280635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-12-11DOI: 10.3329/bjpt.v27i2.50672
A. Aziz, Almujaddade Alfasane
Gracilaria tenuistipitata var. liui Zhang et Xia 1988 from sand-flat at Nuniachara, Cox’s Bazar, Ulva linza Lin. from west coast of Naf R. at Noapara, Teknaf and Fishary Ghat in River Bakkhali, at Cox’s Bazar, and Caulerpa fergusonii Murray from St. Martin’s Island (SMI), have been newly recorded and illustrated from Bangladesh. C. chemnitzschi (Esper) Weber-van Bosse var. irregulare Aziz & Alfasane var. nov. and C. sertularioides (S.G. Gmelin) M. Howe var. robusta Aziz & Alfasane var. nov. from SMI, Cox’s Bazar District, Bangladesh are new to science. Total number of marine algal taxa so far recorded from Bangladesh coasts is now 210. Bangladesh J. Plant Taxon. 27(2): 335-343, 2020 (December)
张丽丽等，1988，来自考克斯巴扎尔努尼查拉沙地，Ulva linza Lin。来自尼日利亚西海岸Noapara的Teknaf和Fishary Ghat，以及来自圣马丁岛(SMI)的Caulerpa fergusonii Murray，都是孟加拉国的新记录和插图。C. chemnitzschi (Esper) Weber-van Bosse var. irregular Aziz & Alfasane var. 11和C. sertularioides (S.G. Gmelin) M. Howe var. robusta Aziz & Alfasane var. 11来自孟加拉国考克斯巴扎尔地区的SMI，对科学来说是新的。迄今为止，孟加拉国海岸记录的海洋藻类类群总数为210种。植物分类单元。27(2):335-343,2020 (12)
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