In this article, the association Alismato-Scirpetum sylvatici was validated according to the requirements of article 5 of the Code of Phytosociological Nomenclature (edition 4) (CPSN 4th edition). Also the mutation of names (article 45 of CPSN-IV) of five syntaxa: Schoenoplectetum lacustris, Bolboschoeno fluviatilis–Zizanietum latifoliae, Petasition radiatae, Petasitetum radiatae and Arctophiletum fulvae was performed.
{"title":"Validation and mutation of the names of some syntaxa from the class Phragmito-Magnocaricetea","authors":"B. Teteryuk","doi":"10.17581/bp.2023.12113","DOIUrl":"https://doi.org/10.17581/bp.2023.12113","url":null,"abstract":"In this article, the association Alismato-Scirpetum sylvatici was validated according to the requirements of article 5 of the Code of Phytosociological Nomenclature (edition 4) (CPSN 4th edition). Also the mutation of names (article 45 of CPSN-IV) of five syntaxa: Schoenoplectetum lacustris, Bolboschoeno fluviatilis–Zizanietum latifoliae, Petasition radiatae, Petasitetum radiatae and Arctophiletum fulvae was performed.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67439992","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}
Plants of the genus Aristolochia L. are included in the pharmacopoeias of different countries because they have a high potential as anti-inflammatory, bactericidal, wound healing agents, and antidotes and their spheres (fields) of medical application are diverse. Due to the depletion of natural populations, the renewal of the species by biotechnological methods has become relevant. In vitro reproduction or clonal micropropagation enables the researchers to massively duplicate plants with a definite genotype throughout the year. This review provides important information available today on the in vitro propagation methods and further successful regeneration for valuable plants from the genus Aristolochia. The generalized information is necessary to create a breeding technology for each of the species of the genus, which will save valuable medicinal resources.
{"title":"Microclonal propagation of the species from the genus Aristolochia: a review","authors":"O. V. Nakonechnaya, Vlada V. Volkonskaya","doi":"10.17581/bp.2023.12202","DOIUrl":"https://doi.org/10.17581/bp.2023.12202","url":null,"abstract":"Plants of the genus Aristolochia L. are included in the pharmacopoeias of different countries because they have a high potential as anti-inflammatory, bactericidal, wound healing agents, and antidotes and their spheres (fields) of medical application are diverse. Due to the depletion of natural populations, the renewal of the species by biotechnological methods has become relevant. In vitro reproduction or clonal micropropagation enables the researchers to massively duplicate plants with a definite genotype throughout the year. This review provides important information available today on the in vitro propagation methods and further successful regeneration for valuable plants from the genus Aristolochia. The generalized information is necessary to create a breeding technology for each of the species of the genus, which will save valuable medicinal resources.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67441268","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}
A. Oskolski, Alice Mthembu, A. Shipunov, E. Kotina
Bark structure of Polylepis incana (Sanguisorbeae, Rosaceae) is described and compared with that in related genera Cliffortia and Leucosidea. Tribe Sanguisorbeae shows an extraordinary diversity of bark abscission patterns. The outermost bark portions are peeling off along the non-conducting secondary phloem (Leucosidea, Cliffortia ruscifolia), or along the periderm (C. strobilifera). The protective function is performed by phellem (Leucosidea), or by sclerified secondary phloem (Cliffortia). In Polylepis, the separation layers occur in phellem and non-sclerified phloem, while a prominent protective layer is absent: its function is performed by multiple uniseriate layers of suberized phellem cells. Such pattern of peeling bark has not been reported yet elsewhere. Lenticels lack in Polylepis, but its phellem is similar in its structure (probably, also in some functions) to stratified filling lenticular tissue. Smooth surface of Polylepis bark is maintained by permanent abscission of thin layers representing an exterme case of the peeling type of bark architecture.
{"title":"Bark anatomy of Polylepis (Rosaceae): a loose stratified phellem instead of the lenticels?","authors":"A. Oskolski, Alice Mthembu, A. Shipunov, E. Kotina","doi":"10.17581/bp.2023.12s02","DOIUrl":"https://doi.org/10.17581/bp.2023.12s02","url":null,"abstract":"Bark structure of Polylepis incana (Sanguisorbeae, Rosaceae) is described and compared with that in related genera Cliffortia and Leucosidea. Tribe Sanguisorbeae shows an extraordinary diversity of bark abscission patterns. The outermost bark portions are peeling off along the non-conducting secondary phloem (Leucosidea, Cliffortia ruscifolia), or along the periderm (C. strobilifera). The protective function is performed by phellem (Leucosidea), or by sclerified secondary phloem (Cliffortia). In Polylepis, the separation layers occur in phellem and non-sclerified phloem, while a prominent protective layer is absent: its function is performed by multiple uniseriate layers of suberized phellem cells. Such pattern of peeling bark has not been reported yet elsewhere. Lenticels lack in Polylepis, but its phellem is similar in its structure (probably, also in some functions) to stratified filling lenticular tissue. Smooth surface of Polylepis bark is maintained by permanent abscission of thin layers representing an exterme case of the peeling type of bark architecture.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67441587","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}
Pyotr N. Petrov, Peter G. Efimov, Yuri O. Kopylov-Guskov, Sergei R. Majorov, Maxim S. Nuraliev, Alexei A. Oskolski, Dmitry D. Sokoloff
Memorial Bibliography of Alexey Borisovich Shipunov
阿列克谢·鲍里索维奇·希普诺夫纪念书目
{"title":"Memorial Bibliography of Alexey Borisovich Shipunov","authors":"Pyotr N. Petrov, Peter G. Efimov, Yuri O. Kopylov-Guskov, Sergei R. Majorov, Maxim S. Nuraliev, Alexei A. Oskolski, Dmitry D. Sokoloff","doi":"10.17581/bp.2023.12s12","DOIUrl":"https://doi.org/10.17581/bp.2023.12s12","url":null,"abstract":"Memorial Bibliography of Alexey Borisovich Shipunov","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"168 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135318844","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}
V. Y. Cherdantseva, O. Pisarenko, M. Ignatov, E. Ignatova, V. Fedosov, S. Dudov, V. Bakalin, Botanical garden-institute Feb Ras
The check-list of mosses of the northern part of the Russian Far East includes 730 species and 13 additional infraspecific taxa with references on their distribution in eleven floristic regions within Chukotka Autonomous district, Kamchatsky Territory, Magadan Province and northern part of Khabarovsk Territory. Number of taxa, reported from regions is following: Wrangel Island – 286, Chukotka, western part –267, Chukotka, continental part – 272, Chukotka, southern part – 384, Chukotka, Beringian part – 434, Magadan Region – 435, Koryakia, northern part – 178, Khabarovsk Territory, northern part – 219, Koryakia, southern part – 152, Kamchatka – 572, Commander Islands – 336. List of species is accompanied with brief treatment of the area and history of its bryoflora exploration. Comments on species, which regional records are considered as doubtful or erroneous are provided along with lists of 45 taxa excluded from flora of whole area and synonyms widely used in recent literature.
{"title":"Mosses of the northern Russian Far East, an annotated check-list","authors":"V. Y. Cherdantseva, O. Pisarenko, M. Ignatov, E. Ignatova, V. Fedosov, S. Dudov, V. Bakalin, Botanical garden-institute Feb Ras","doi":"10.17581/bp.2018.07206","DOIUrl":"https://doi.org/10.17581/bp.2018.07206","url":null,"abstract":"The check-list of mosses of the northern part of the Russian Far East includes 730 species and 13 additional infraspecific taxa with references on their distribution in eleven floristic regions within Chukotka Autonomous district, Kamchatsky Territory, Magadan Province and northern part of Khabarovsk Territory. Number of taxa, reported from regions is following: Wrangel Island – 286, Chukotka, western part –267, Chukotka, continental part – 272, Chukotka, southern part – 384, Chukotka, Beringian part – 434, Magadan Region – 435, Koryakia, northern part – 178, Khabarovsk Territory, northern part – 219, Koryakia, southern part – 152, Kamchatka – 572, Commander Islands – 336. List of species is accompanied with brief treatment of the area and history of its bryoflora exploration. Comments on species, which regional records are considered as doubtful or erroneous are provided along with lists of 45 taxa excluded from flora of whole area and synonyms widely used in recent literature.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67432712","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}
I. V. Gafitskaya, A. B. Bezdelev, O. V. Nakonechnaya
We established sterile clones of a medicinal plant dragonhead Dracocephalum charkeviczii Prob. (Lamiaceae). We used shoots of the plants from natural habitat, notably leaf nodes with axillary bud, as explants, sterilized the explants in 0.1 % Diocide for 4 minutes and cultivated them on agarized nutrient half-strength MS medium with vitamins, 2 % sucrose, 0.4 % agar, 1 mg/l indolylbutyric acid (IBA), or 0.5 or 1.0 mg/l 6-benzyladenine (BA). Medium pH was 4.6 or 5.4. We took hormonefree half-salt MS medium as a control. We observed the maximum propagation coefficient equal to 9.4 in microplants cultivated on the medium with 1 mg/l BA. Application of hormone-free MS medium can be recommended for D. charkeviczii propagation due to its simplicity. The use of the medium protocol with 1 mg/l BA on the first step and with IBA on the second step will allow rapid multiplication and establishment of full-fledged plants of D. charkeviczii for different purposes such as restoration of natural populations, source of valuable metabolites, landscaping, etc.
{"title":"Dracocephalum charkeviczii Prob. in vitro","authors":"I. V. Gafitskaya, A. B. Bezdelev, O. V. Nakonechnaya","doi":"10.17581/bp.2022.11101","DOIUrl":"https://doi.org/10.17581/bp.2022.11101","url":null,"abstract":"We established sterile clones of a medicinal plant dragonhead Dracocephalum charkeviczii Prob. (Lamiaceae). We used shoots of the plants from natural habitat, notably leaf nodes with axillary bud, as explants, sterilized the explants in 0.1 % Diocide for 4 minutes and cultivated them on agarized nutrient half-strength MS medium with vitamins, 2 % sucrose, 0.4 % agar, 1 mg/l indolylbutyric acid (IBA), or 0.5 or 1.0 mg/l 6-benzyladenine (BA). Medium pH was 4.6 or 5.4. We took hormonefree half-salt MS medium as a control. We observed the maximum propagation coefficient equal to 9.4 in microplants cultivated on the medium with 1 mg/l BA. Application of hormone-free MS medium can be recommended for D. charkeviczii propagation due to its simplicity. The use of the medium protocol with 1 mg/l BA on the first step and with IBA on the second step will allow rapid multiplication and establishment of full-fledged plants of D. charkeviczii for different purposes such as restoration of natural populations, source of valuable metabolites, landscaping, etc.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67436037","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}
The work aims the study the species diversity and ecology of Cyanobacteria in the benthos on the Israeli coast of the Mediterranean Sea. As a result, 24 taxa of Cyanobacteria were found. Seven taxa were noted for the first time for this sea: Aphanocapsa incerta, Aphanothece nidulans, Chlorogloea cf. microcystoides, Pseudanabaena mucicola, Chroococcus sp., Gloeocapsopsis sp., Trichocoleus sp. Most Cyanobacteria species were benthic (90 %) and marine (67 %). There were only four indicators of saprobity, and all of them were freshwater species common in oligosaprobic and beta-mesosaprobic waters. Most species had a wide geographic distribution. Species marked of boreal (10 %), boreal-tropical (38 %), arctic-boreal-tropic (29 %) and cosmopolites (24 %) groups. The species richness of Cyanobacteria increased in the sites with the maximal anthropogenic loads from industrial and urban areas of the central Israel, and the minimal ones were in the protected areas.
{"title":"The first records of Cyanobacteria diversity in the benthos of the Israeli Coast of the Mediterranean Sea","authors":"E. Miroshnichenko, S. Barinova, L. Ryabushko","doi":"10.17581/bp.2022.11211","DOIUrl":"https://doi.org/10.17581/bp.2022.11211","url":null,"abstract":"The work aims the study the species diversity and ecology of Cyanobacteria in the benthos on the Israeli coast of the Mediterranean Sea. As a result, 24 taxa of Cyanobacteria were found. Seven taxa were noted for the first time for this sea: Aphanocapsa incerta, Aphanothece nidulans, Chlorogloea cf. microcystoides, Pseudanabaena mucicola, Chroococcus sp., Gloeocapsopsis sp., Trichocoleus sp. Most Cyanobacteria species were benthic (90 %) and marine (67 %). There were only four indicators of saprobity, and all of them were freshwater species common in oligosaprobic and beta-mesosaprobic waters. Most species had a wide geographic distribution. Species marked of boreal (10 %), boreal-tropical (38 %), arctic-boreal-tropic (29 %) and cosmopolites (24 %) groups. The species richness of Cyanobacteria increased in the sites with the maximal anthropogenic loads from industrial and urban areas of the central Israel, and the minimal ones were in the protected areas.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67438553","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}
V. Gundegmaa, Tsogtbayar Dashmaa, Chuntai Bilegtmandakh, Zagarjav Tsegmed, J. Norris, Batlai Oyuntsetseg, A. Erst, S. Baasanmunkh
In this study we examined the floristic diversity of the Sutai Khairkhan Mountain Nature Reserve in western Mongolia’s Altai Mountain range. This nature reserve area was established in 2019 and compared to nearby reserves, its flora is relatively understudied. From field surveys in 2014, 2019, and 2020, we collected about 400 herbarium specimens from various habitats and different altitudes in the reserve. We identified total of 317 taxa including 10 subspecies and three varieties of vascular plants belonging to 157 genera and 45 families. Among these, five species are nationally endemic, 27 species are endemic to Altai Mountains, and 37 species are threatened, including two critically endangered, 11 endangered, 16 vulnerable, and eight near threatened. In addition, we rediscovered Microula tibetica var. pratensis (Maxim.) W.T. Wang after 40 years. This first complete checklist of the SKMNR flora amplifies the value of protecting the diverse and threatened plants in the reserve and creates a baseline to assess future population changes.
本文对蒙古阿尔泰山脉西部苏泰-海尔可汗山自然保护区的植物区系多样性进行了研究。该自然保护区成立于2019年，与附近的保护区相比，其植物群研究相对不足。通过2014年、2019年和2020年的实地调查，我们在保护区的不同栖息地和不同海拔采集了约400份植物标本馆标本。共鉴定出维管植物317个分类群，包括10个亚种和3个变种，隶属于45科157属。其中，全国特有种5种，阿尔泰山特有种27种，受威胁物种37种，其中极度濒危2种，濒危11种，易危16种，近危8种。此外，我们还重新发现了藏羚羊(microoula tibetica var. pratensis)。40年后的王w.t.。这是第一个完整的SKMNR植物区系清单，扩大了保护保护区内多样性和受威胁植物的价值，并为评估未来的种群变化创造了一个基线。
{"title":"The vascular flora of the Sutai Khairkhan Mountain Nature Reserve, Mongolia","authors":"V. Gundegmaa, Tsogtbayar Dashmaa, Chuntai Bilegtmandakh, Zagarjav Tsegmed, J. Norris, Batlai Oyuntsetseg, A. Erst, S. Baasanmunkh","doi":"10.17581/bp.2022.11102","DOIUrl":"https://doi.org/10.17581/bp.2022.11102","url":null,"abstract":"In this study we examined the floristic diversity of the Sutai Khairkhan Mountain Nature Reserve in western Mongolia’s Altai Mountain range. This nature reserve area was established in 2019 and compared to nearby reserves, its flora is relatively understudied. From field surveys in 2014, 2019, and 2020, we collected about 400 herbarium specimens from various habitats and different altitudes in the reserve. We identified total of 317 taxa including 10 subspecies and three varieties of vascular plants belonging to 157 genera and 45 families. Among these, five species are nationally endemic, 27 species are endemic to Altai Mountains, and 37 species are threatened, including two critically endangered, 11 endangered, 16 vulnerable, and eight near threatened. In addition, we rediscovered Microula tibetica var. pratensis (Maxim.) W.T. Wang after 40 years. This first complete checklist of the SKMNR flora amplifies the value of protecting the diverse and threatened plants in the reserve and creates a baseline to assess future population changes.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67436217","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}
The Russian Far East is of particular interest to monographers of the genus Euonymus, because this is where the northern distribution limits of many East Asian species are. At the same time, the main problem is different understanding of the scope and status of a number of taxa by Russian and foreign botanists. The article presents the chronology of the most prominent results of various authors, Russian and foreign (primarily Chinese, Korean and Japanese), who contributed to taxonomic, environmental and chorological studies of the genus Euonymus. The contributions of N.S. Turczaninow, K.J. Maksimovich, F.B. Schmidt, V.L. Komarov, T. Nakai, Ya.I. Prokhanov, A.I. Tolmachev, B.A. Shukhobodsky, T.G. Leonova, N.N. Tzvelev, S.K. Cherepanov, K.V. Kiseleva, V.A. Nedoluzhko to the formation of the modern taxonomic concept of the genus Euonymus are analyzed. Unresolved issues of biology of the Far Eastern species are emphasized, the ways of to solve them are outlined.
{"title":"History and peculiarities of study of the Far Eastern species of Euonymus","authors":"I. Savinov","doi":"10.17581/bp.2022.11104","DOIUrl":"https://doi.org/10.17581/bp.2022.11104","url":null,"abstract":"The Russian Far East is of particular interest to monographers of the genus Euonymus, because this is where the northern distribution limits of many East Asian species are. At the same time, the main problem is different understanding of the scope and status of a number of taxa by Russian and foreign botanists. The article presents the chronology of the most prominent results of various authors, Russian and foreign (primarily Chinese, Korean and Japanese), who contributed to taxonomic, environmental and chorological studies of the genus Euonymus. The contributions of N.S. Turczaninow, K.J. Maksimovich, F.B. Schmidt, V.L. Komarov, T. Nakai, Ya.I. Prokhanov, A.I. Tolmachev, B.A. Shukhobodsky, T.G. Leonova, N.N. Tzvelev, S.K. Cherepanov, K.V. Kiseleva, V.A. Nedoluzhko to the formation of the modern taxonomic concept of the genus Euonymus are analyzed. Unresolved issues of biology of the Far Eastern species are emphasized, the ways of to solve them are outlined.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67436257","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}
The mixoploid karyotype found in the garden plant, Strobilanthes hamiltoniana, is a new record of chromosome count to the contemporary knowledge. The detailed karyomorphometrical analysis of the plant revealed a symmetric karyotype which is primitive. A hypoploid variant along with the normal chromosome complement was recorded within a root meristem with karyotype formulae as 10 nm and 20 nm respectively. In the diploid cells two pair of chromosomes have secondary constriction with an average chromosome length of 1.81 μm. The high values of symmetric indices and low values of asymmetric indices proved the primitive nature of the karyotype.
{"title":"A new record of chromosome count in mixoploid karyotype of Strobilanthes hamiltoniana (Steud.) Bosser & Heine (Acanthaceae)","authors":"Reshmi Chembrammal, J. E. Thoppil","doi":"10.17581/bp.2022.11103","DOIUrl":"https://doi.org/10.17581/bp.2022.11103","url":null,"abstract":"The mixoploid karyotype found in the garden plant, Strobilanthes hamiltoniana, is a new record of chromosome count to the contemporary knowledge. The detailed karyomorphometrical analysis of the plant revealed a symmetric karyotype which is primitive. A hypoploid variant along with the normal chromosome complement was recorded within a root meristem with karyotype formulae as 10 nm and 20 nm respectively. In the diploid cells two pair of chromosomes have secondary constriction with an average chromosome length of 1.81 μm. The high values of symmetric indices and low values of asymmetric indices proved the primitive nature of the karyotype.","PeriodicalId":37724,"journal":{"name":"Botanica Pacifica","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67436310","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}
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