Pub Date : 2021-09-16DOI: 10.37427/botcro-2021-021
QI Liu, Han Wu, YAN-LING Li, J. Kociolek
This paper describes a new species of the genus Cymbella C.A. Agardh from an alpine lake in the Hengduan Mountains of southwestern China. A detailed morphological description of the new species, named Cymbella luoyulanae sp. nov., is presented; the description is based on light and scanning electron microscopy. The main features of C. luoyulanae are strongly dorsiventral valves with strongly reverse-lateral raphe branches near the proximal ends, a large central area occupying approximately a half of the width with the valve and slit-like areolae comprising striae that may be unseriate or partially biseriate. The new species has morphological characteristics that resemble those of C. heihainensis Y.Li et Gong, C. modicepunctata Krammer and C. asiatica Metzeltin, Lange-Bertalot et Y.Li, but it differs from these three species in details of size, valve shape, striae density, central area, and number of stigmata.
本文报道了中国西南横断山区一个高山湖泊中的一个新物种，即悬铃木属（Cymbella C.a.Agardh）。本文对该新种罗玉兰Cymbella looyulane sp.nov.进行了详细的形态学描述；该描述基于光和扫描电子显微镜。罗玉兰的主要特征是在近端附近具有强烈反向的中缝外侧分支的强背中央瓣，一个大的中心区域占据了瓣宽度的大约一半，并且狭缝状乳晕包括可能不可变或部分双列的条纹。该新种的形态特征类似于黑海松（C.heihainensis Y.Li et Gong）、莫迪切蓬塔（C.modicepunctata Krammer）和亚洲松（C.asiatica Metzeltin）、兰格·贝塔洛（Lange Bertalot）和李（Y.Li），但在大小、瓣膜形状、条纹密度、中心面积和柱头数量等方面与这三种不同。
{"title":"One new species of Cymbella C.A. Agardh (Bacillariophyta) from high altitude lakes in the Hengduan Mountains of Southwest China","authors":"QI Liu, Han Wu, YAN-LING Li, J. Kociolek","doi":"10.37427/botcro-2021-021","DOIUrl":"https://doi.org/10.37427/botcro-2021-021","url":null,"abstract":"This paper describes a new species of the genus Cymbella C.A. Agardh from an alpine lake in the Hengduan Mountains of southwestern China. A detailed morphological description of the new species, named Cymbella luoyulanae sp. nov., is presented; the description is based on light and\u0000scanning electron microscopy. The main features of C. luoyulanae are strongly dorsiventral valves with strongly reverse-lateral raphe branches near the proximal ends, a large central area occupying approximately a half of the width with the valve and slit-like areolae comprising striae that may be unseriate or partially biseriate. The new species has morphological characteristics that resemble those of C. heihainensis Y.Li et Gong, C. modicepunctata Krammer and C. asiatica Metzeltin, Lange-Bertalot et Y.Li, but it differs from these three species in details of size, valve shape, striae density, central area, and number of stigmata.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2021-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43900909","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 : 2021-09-16DOI: 10.37427/botcro-2021-018
D. Iamonico
Colocasia esculenta (L.) Schott is an emergent aquatic and semi-aquatic species native to Asia, where it grows in tropical and subtropical areas. This species is widely cultivated for its edible corm and is considered as alien in various parts of the world, becoming sometimes invasive (e.g., in Spain), and in these areas eradication should be carried out. As part of ongoing studies on Araceae, in 2015 a population of C. esculenta was discovered in Rome (central Italy), where it grows along ditches. This is the first record of a naturalized population in Italy. A comprehensive view of this species in Italy and Europe was given, with clarifications about its occurrence in the Balkans, where C. esculenta was excluded from Bosnia and Herzegovina, Croatia, Montenegro, North Macedonia, Serbia, and Slovenia. A morphological description based on the population found and considerations of its ecology and the climatic conditions at the Roman site are provided.
{"title":"First record of a naturalized population of the tropical Colocasia esculenta (Araceae) in Italy, and clarifications about its occurrence in southeastern Europe","authors":"D. Iamonico","doi":"10.37427/botcro-2021-018","DOIUrl":"https://doi.org/10.37427/botcro-2021-018","url":null,"abstract":"Colocasia esculenta (L.) Schott is an emergent aquatic and semi-aquatic species native to Asia, where it grows in tropical and subtropical areas. This species is widely cultivated for its edible corm and is considered as alien in various parts of the world, becoming sometimes invasive (e.g., in Spain), and in these areas eradication should be carried out. As part of ongoing studies on Araceae, in 2015 a population\u0000of C. esculenta was discovered in Rome (central Italy), where it grows along ditches. This is the first record of a naturalized population in Italy. A comprehensive view of this species in Italy and Europe was given, with clarifications about its occurrence in the Balkans, where C.\u0000esculenta was excluded from Bosnia and Herzegovina, Croatia, Montenegro, North Macedonia, Serbia, and Slovenia. A morphological description based on the population found and considerations of its ecology and the climatic conditions at the Roman site are provided.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2021-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45822587","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 : 2021-09-16DOI: 10.37427/botcro-2021-020
Angela G. Bartolo, G. Zammit, Hannah Russell, A. Peters, F. Küpper
The heterokont benthic multicellular algae Schizocladia ischiensis E.C. Henry, K. Okuda et H. Kawai (Schizocladiophyceae), Hecatonema terminale (Kützing) Kylin and Striaria attenuata (Greville) Greville (Phaeophyceae) are reported for the first time from the waters around the Maltese islands in the central Mediterranean. They were identified through algal isolation from incubated natural substrata, coupled with DNA barcoding targeting the biomarkers COI and rbcL plus the RuBisCO spacer. For three additional brown algae, Colpomenia sinuosa (Mertens ex Roth) Derbès et Solier, Asperococcus bullosus J.V.Lamouroux and Sphacelaria sp., DNA sequences confirmed previous morphology-based records from Malta. This paper also provides an updated literature-based species list of the marine macroalgae present in Malta.
首次在地中海中部马耳他群岛周围水域发现了异孔底栖多细胞藻类Schizocladia ischiensis E.C.Henry，K.Okuda et H.Kawai（裂殖藻科）、Hecatonema terminate（Kützing）Kylin和Striaria attenuta（Greville）Greville（Phaeophyceae）。它们是通过从培养的天然基质中分离藻类，结合靶向生物标志物COI和rbcL以及RuBisCO间隔区的DNA条形码进行鉴定的。对于另外三种褐藻，Colpomenia sinuosa（Mertens exRoth）Derbès et Solier、Asperococcus bulosus J.V.Lamouroux和Sphacellaia sp.，DNA序列证实了马耳他以前基于形态学的记录。本文还提供了马耳他海洋大型藻类的最新文献基础物种列表。
{"title":"DNA barcoding of marine algae from Malta: new records from the central Mediterranean","authors":"Angela G. Bartolo, G. Zammit, Hannah Russell, A. Peters, F. Küpper","doi":"10.37427/botcro-2021-020","DOIUrl":"https://doi.org/10.37427/botcro-2021-020","url":null,"abstract":"The heterokont benthic multicellular algae Schizocladia ischiensis E.C. Henry, K. Okuda et H. Kawai (Schizocladiophyceae), Hecatonema terminale (Kützing) Kylin and Striaria attenuata (Greville) Greville (Phaeophyceae) are reported for the first time from the waters around the Maltese islands in the central Mediterranean. They were identified through algal isolation from incubated natural substrata, coupled with DNA barcoding targeting the biomarkers COI and rbcL plus the RuBisCO spacer. For three additional brown algae, Colpomenia sinuosa (Mertens ex\u0000Roth) Derbès et Solier, Asperococcus bullosus J.V.Lamouroux and Sphacelaria sp., DNA sequences confirmed previous morphology-based records from Malta. This paper also provides an updated literature-based\u0000species list of the marine macroalgae present in Malta.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2021-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46119565","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 : 2021-09-16DOI: 10.37427/botcro-2021-019
D. Stešević, Đ. Milanović, Milica Stanišić-Vujačić, U. Šilc
An alien and potentially invasive species of North American origin Aristida oligantha Michx. was found in the hinterland of Velika plaža, a sandy beach in the town of Ulcinj (Montenegro), the second known record of this plant in Europe. Here we describe the Aristida oligantha community. Further monitoring is suggested in order to evaluate its invasiveness and to plan appropriate eradication measures.
{"title":"Aristida oligantha – a new alien species on the eastern Adriatic coast","authors":"D. Stešević, Đ. Milanović, Milica Stanišić-Vujačić, U. Šilc","doi":"10.37427/botcro-2021-019","DOIUrl":"https://doi.org/10.37427/botcro-2021-019","url":null,"abstract":"An alien and potentially invasive species of North American origin Aristida oligantha Michx. was found in the hinterland of Velika plaža, a\u0000sandy beach in the town of Ulcinj (Montenegro), the second known record\u0000of this plant in Europe. Here we describe the Aristida oligantha community. Further monitoring is suggested in order to evaluate its invasiveness and to plan appropriate eradication measures.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2021-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49514415","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 : 2021-09-16DOI: 10.37427/botcro-2021-017
G. Kunev
The current report discusses Bromus diandrus, a new species in the flora of Bulgaria. A concise description of its morphological features with an emphasis on the characters that distinguish it from the already known representatives of Bromus sect. Genea in the country is presented. The newly established locality is characterized floristically and ecologically. The probabilities of the native or alien origin of the studied population are also discussed.
{"title":"Bromus diandrus (Poaceae), an addition to the Bulgarian flora","authors":"G. Kunev","doi":"10.37427/botcro-2021-017","DOIUrl":"https://doi.org/10.37427/botcro-2021-017","url":null,"abstract":"The current report discusses Bromus diandrus, a new species in the flora\u0000of Bulgaria. A concise description of its morphological features with an emphasis on the characters that distinguish it from the already known\u0000representatives of Bromus sect. Genea in the country is presented. The newly established locality is characterized floristically and ecologically. The probabilities of the native or alien origin of the studied population are also discussed.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2021-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41860572","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 : 2021-04-01DOI: 10.37427/botcro-2021-001
Sadjia Rabhi, R. Djebbar, A. Belkebir
Species of coastal dunes are subjected to several environmental stress factors such as drought, high temperature, light intensity as well as salinity, which led to development of specific morphological, physiological and biochemical adaptation mechanisms. Studying these strategies allows explaining the survival of these species in such hostile and stressful conditions. In this study we compared some parameters (morphological, physiological and biochemical) of two Brassicaceae species Matthiola tricuspidata (L.) W.T.Aiton, Cakile maritima Scop., and two Fabaceae species Lotus creticus L. and Ononis variegata L., harvested from their natural environment in coastal dunes of Zemmouri El Bahri (Algeria), with the aim to understand their mechanisms of adaptation. The results revealed that C. maritime showed the highest relative water content, leaf area, leaf mass area, and succulence index. Based on the highest levels of total phenols, flavonoids and anthocyanins as well as high contents of photosynthetic pigments, M. tricuspidata can be classified as "homoiochlorophyllous" plant. The dry mass content varied considerably among species, with the highest values observed in L. creticus and the lowest in C. maritima. As both Fabaceae species L. creticus and O. variegata showed high chlorophylls, carotenoids, total phenols and flavonoids could also be classified as "homoiochlorophyllous" species. The relatively high levels of total phenols, total flavonoids, anthocyanins and carotenoids implies a biochemical adaptation that allows these plants to maintain necessary photosynthetic activity under a water deficiency condition.
海岸带沙丘物种受到干旱、高温、强光、盐度等多种环境胁迫因素的影响，形成了独特的形态、生理和生化适应机制。研究这些策略可以解释这些物种在如此恶劣和紧张的条件下的生存。本研究比较了两种芸苔科植物Matthiola tricuspidata (L.)的形态学、生理生化指标。W.T.Aiton, Cakile maritime Scop。和两种豆科植物莲花(lotuscreticus L.)和Ononis variegata L. (Ononis variegata L.)，采自阿尔及利亚Zemmouri El Bahri海岸沙丘的自然环境，目的是了解它们的适应机制。结果表明，海棠花的相对含水量、叶面积、叶质量面积和多肉指数最高。根据其总酚、总黄酮和花青素含量最高以及光合色素含量高的特点，可将其归类为“同质叶绿素”植物。干物质含量在不同种间差异较大，以白草最高，海草最低。由于豆科植物L. creticus和O. variegata均含有较高的叶绿素，类胡萝卜素、总酚和黄酮类物质也可归类为“同质叶绿素”物种。相对较高水平的总酚、总黄酮、花青素和类胡萝卜素意味着一种生化适应，使这些植物在缺水条件下保持必要的光合活性。
{"title":"Ecophysiological study of some coastal dune species of Zemmouri El Bahri (Algeria)","authors":"Sadjia Rabhi, R. Djebbar, A. Belkebir","doi":"10.37427/botcro-2021-001","DOIUrl":"https://doi.org/10.37427/botcro-2021-001","url":null,"abstract":"Species of coastal dunes are subjected to several environmental stress factors such as drought, high temperature, light intensity as well as salinity, which led to development of specific morphological, physiological and biochemical adaptation mechanisms. Studying these strategies allows explaining the survival of these species in such hostile and stressful conditions. In this study we compared some parameters (morphological, physiological and biochemical) of two Brassicaceae species Matthiola tricuspidata (L.) W.T.Aiton, Cakile maritima Scop., and two Fabaceae species Lotus creticus L. and Ononis variegata L., harvested from their natural environment in coastal dunes of Zemmouri El Bahri (Algeria), with the aim to understand their mechanisms of adaptation. The results revealed that C. maritime showed the highest relative water content, leaf area, leaf mass area, and succulence index. Based on the highest levels of total phenols, flavonoids and anthocyanins as well as high contents of photosynthetic pigments, M. tricuspidata can be classified as \"homoiochlorophyllous\" plant. The dry mass content varied considerably among species, with the highest values observed in L. creticus and the lowest in C. maritima. As both Fabaceae species L. creticus and O. variegata showed high chlorophylls, carotenoids, total phenols and flavonoids could also be classified as \"homoiochlorophyllous\" species. The relatively high levels of total phenols, total flavonoids, anthocyanins and carotenoids implies a biochemical adaptation that allows these plants to maintain necessary photosynthetic activity under a water deficiency condition.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":"0-0"},"PeriodicalIF":1.3,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.37427/botcro-2021-001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42735214","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 : 2021-04-01DOI: 10.37427/botcro-2021-011
S. Brullo, C. Brullo, S. Cambria, G. Tavilla, G. G. D. Galdo, S. Bogdanović
Poa maroccana is an annual Mediterranean species, which is recorded for the first time from Sicily and for the whole Italian territory. It usually occurs in synanthopic habitats, represented mainly by urban and suburban roadsides, where it is quite sporadic. Based on current knowledge, it has been hitherto reported only in a few localities of the Mediterranean area, particularly in Morocco, Algeria, Tunisia, Libya, Spain, Portugal, Greece, Turkey, Syria and Crimea. Field observations and herbarium investigations have shown that this species is often mistaken for P. annua, mainly due to its morphological similarities, as well as for the same ecological needs, therefore its real geographical distribution has yet to be verified. Although the two species are both tetraploids (2n = 28), they clearly differ for numerous relevant features concerning the shape and size of ligules, inflorescence, spikelet, glumes, palea, lemma, anthers, lodicules and seed. In order to better clarify the relationships of P. maroccana with P. annua and the other annual species of this genus occurring in the Mediterranean, its carefull a morphological description and iconography is provided, as well as a comparative morphological table of all allied species and also their analytical key for easy identification.
Poa maroccana是地中海一年生物种，首次在西西里岛和整个意大利领土上记录。它通常发生在合生栖息地，主要以城市和郊区的路边为代表，在那里它是相当零星的。根据目前的知识，迄今只在地中海地区的几个地方，特别是在摩洛哥、阿尔及利亚、突尼斯、利比亚、西班牙、葡萄牙、希腊、土耳其、叙利亚和克里米亚报告了这种情况。野外观察和植物标本室调查表明，由于其形态上的相似性和相同的生态需要，该物种经常被误认为是黄花蒿，因此其真实的地理分布尚未得到证实。虽然这两个物种都是四倍体(2n = 28)，但它们在叶柄、花序、小穗、颖片、颖花、外稃、花药、花萼和种子的形状和大小等许多相关特征上明显不同。为了更好地阐明maroccana P. maroccana与P. annua及其他地中海一年生植物的关系，本文对其进行了详细的形态描述和图解，并提供了所有近缘种的比较形态表和便于鉴定的分析关键字。
{"title":"Taxonomical and chorological remarks on the Mediterranean Poa maroccana (Poaceae) and the first record in Italy from the Sicilian flora","authors":"S. Brullo, C. Brullo, S. Cambria, G. Tavilla, G. G. D. Galdo, S. Bogdanović","doi":"10.37427/botcro-2021-011","DOIUrl":"https://doi.org/10.37427/botcro-2021-011","url":null,"abstract":"Poa maroccana is an annual Mediterranean species, which is recorded for the first time from Sicily and for the whole Italian territory. It usually occurs in synanthopic habitats, represented mainly by urban and suburban roadsides, where it is quite sporadic. Based on current knowledge, it has been hitherto reported only in a few localities of the Mediterranean area, particularly in Morocco, Algeria, Tunisia, Libya, Spain, Portugal, Greece, Turkey, Syria and Crimea. Field observations and herbarium investigations have shown that this species is often mistaken for P. annua, mainly due to its morphological similarities, as well as for the same ecological needs, therefore its real geographical distribution has yet to be verified. Although the two species are both tetraploids (2n = 28), they clearly differ for numerous relevant features concerning the shape and size of ligules, inflorescence, spikelet, glumes, palea, lemma, anthers, lodicules and seed. In order to better clarify the relationships of P. maroccana with P. annua and the other annual species of this genus occurring in the Mediterranean, its carefull a morphological description and iconography is provided, as well as a comparative morphological table of all allied species and also their analytical key for easy identification.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":"80 1","pages":"0-0"},"PeriodicalIF":1.3,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42336300","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 : 2021-04-01DOI: 10.37427/botcro-2020-033
Miloš Zbiljić, B. Lakušić, M. Marčetić, S. Bogdanović, D. Lakušić
̶ Several natural hybrids between Teucrium montanum L. and T. polium L. have been described in certain parts of the area where this two species are in sympatry. A new population with intermediate individuals that share morphological characteristics of both T. montanum and T. polium is found in Croatia (Bisko near Trilj), and most likely represent a hybridogenous taxon. The aim of this study is to compare morpho-anatomical and phytochemical characteristics of two parental species and their putative hybrid, as well as to determine the most important distinguishing characters between these three groups. In order to describe the variability and significance of morpho-anatomical and phytochemical differentiation of analysed groups several multivariate statistical analysis were conducted (PCA, CDA, DFA, UPGMA-clustering). All analyses confirm the separation of two species, T. polium and T. montanum, and reveal intermediate position of their putative hybrid. In this way, data of morphological and anatomical analysis together with data of the composition of the essential oils support the assumption of the hybridogenous origin of intermediate individuals. Based on descriptions and original indication of parental species of previously described hybrids T. castrense Verg., T. bogoutdinovae Melinkov and T. rohlenae K.Malý, we found that intermediate specimens collected in Croatia perfectly match with T. rohlenae, a hybridogenous taxon discovered by Rohlena in the vicinity of Kotor in Montenegro, and thus prove a presence of a new natural hybrid in the flora of Croatia.
{"title":"Morphological and chemical evidence of Teucrium x rohlenae K.Malý (Lamiaceae), a new hybrid in Croatia","authors":"Miloš Zbiljić, B. Lakušić, M. Marčetić, S. Bogdanović, D. Lakušić","doi":"10.37427/botcro-2020-033","DOIUrl":"https://doi.org/10.37427/botcro-2020-033","url":null,"abstract":"̶ Several natural hybrids between Teucrium montanum L. and T. polium L. have been described in certain parts of the area where this two species are in sympatry. A new population with intermediate individuals that share morphological characteristics of both T. montanum and T. polium is found in Croatia (Bisko near Trilj), and most likely represent a hybridogenous taxon. The aim of this study is to compare morpho-anatomical and phytochemical characteristics of two parental species and their putative hybrid, as well as to determine the most important distinguishing characters between these three groups. In order to describe the variability and significance of morpho-anatomical and phytochemical differentiation of analysed groups several multivariate statistical analysis were conducted (PCA, CDA, DFA, UPGMA-clustering). All analyses confirm the separation of two species, T. polium and T. montanum, and reveal intermediate position of their putative hybrid. In this way, data of morphological and anatomical analysis together with data of the composition of the essential oils support the assumption of the hybridogenous origin of intermediate individuals. Based on descriptions and original indication of parental species of previously described hybrids T. castrense Verg., T. bogoutdinovae Melinkov and T. rohlenae K.Malý, we found that intermediate specimens collected in Croatia perfectly match with T. rohlenae, a hybridogenous taxon discovered by Rohlena in the vicinity of Kotor in Montenegro, and thus prove a presence of a new natural hybrid in the flora of Croatia.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":"0-0"},"PeriodicalIF":1.3,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.37427/botcro-2020-033","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42904162","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 : 2020-10-06DOI: 10.37427/botcro-2021-007
P. Sheikhzadeh, N. Zare, F. Mahmoudi
This research investigated the effects of priming with water for 24 hours and hormone-priming with different concentrations of gibberellic acid (GA3) (50, 100, 150 mg L–1) for 24 hours and hydro and hormone priming techniques either alone or in combination on the germination, growth and biochemical properties of borage seedlings under cadmium stress conditions. The results showed that cadmium stress reduces seed germination and seedling growth indices. Seed priming led to a significant increase in the germination percentage and rate, seedling dry weight and length, seedling vigor indices, as well as the catalase and peroxidase activity of borage seedlings under both cadmium stress and non-stress conditions. Among the priming treatments, the combination of hydro and hormone priming showed the greatest effects on the improvement of germination and seedling growth under cadmium conditions, significantly greater than those achieved with the individual uses of hydro or hormone priming. At all levels of cadmium stress, utilization of combined hydro and hormone priming led to a 0.9 to 11.53-fold, and 0.95 to 2.63-fold increase in seedling dry weight as compared with the control treatment and individual use of hydro or hormone priming, respectively. The highest activity of catalase and peroxidase enzymes in borage seedlings was obtained from seeds primed with the combination of hydro priming with 150 mg L–1 GA3, which was significantly higher than those of the other treatments. Generally, at all levels of cadmium stress, combined hydro and hormone (specially 150 mg L–1 GA3) priming had the most positive effects on seed germination, growth and biochemical properties of borage seedlings
{"title":"The synergistic effects of hydro and hormone priming on seed germination, antioxidant activity and cadmium tolerance in borage","authors":"P. Sheikhzadeh, N. Zare, F. Mahmoudi","doi":"10.37427/botcro-2021-007","DOIUrl":"https://doi.org/10.37427/botcro-2021-007","url":null,"abstract":"This research investigated the effects of priming with water for 24 hours and hormone-priming with different concentrations of gibberellic acid (GA3) (50, 100, 150 mg L–1) for 24 hours and hydro and hormone priming techniques either alone or in combination on the germination, growth and biochemical properties of borage seedlings under cadmium stress conditions. The results showed that cadmium stress reduces seed germination and seedling growth indices. Seed priming led to a significant increase in the germination percentage and rate, seedling dry weight and length, seedling vigor indices, as well as the catalase and peroxidase activity of borage seedlings under both cadmium stress and non-stress conditions. Among the priming treatments, the combination\u0000of hydro and hormone priming showed the greatest effects on the improvement of germination and seedling growth under cadmium conditions,\u0000significantly greater than those achieved with the individual uses of hydro or hormone priming. At all levels of cadmium stress, utilization of combined hydro and hormone priming led to a 0.9 to 11.53-fold, and 0.95 to 2.63-fold increase in seedling dry weight as compared with the control treatment and individual use of hydro or hormone priming, respectively. The highest activity of catalase and peroxidase enzymes in\u0000borage seedlings was obtained from seeds primed with the combination of\u0000hydro priming with 150 mg L–1 GA3, which was significantly higher than those of the other treatments. Generally, at all levels of cadmium stress, combined hydro and hormone (specially 150 mg L–1 GA3) priming had the most positive effects on seed germination, growth and biochemical properties of borage seedlings","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43512697","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 : 2020-10-06DOI: 10.37427/botcro-2021-009
G. Güleryüz, S. Kırmızı, H. Arslan, Elif Güleryüz
The germination properties of Jasione supina Sieber subsp. supina (Campanulaceae), which is endemic to Mount Uludağ, Bursa, Turkey, were determined. In this study, we investigated the effects of GA3, the combination of hormone series and short-term moist chilling (1-month), and long-term moist chilling (4-month) on the germination percentage and mean germination time in relation to seed dormancy breaking. All treatment series were incubated under continuous dark (20 °C, 24 h) and light/dark (20/10 °C, 12/12 h) conditions. Seeds were collected from specimens widespread on the alpine and subalpine grasslands and dwarf shrubs of Mount Uludağ (1800–1900 m a.s.l.). Depending on the concentration, GA3 and the combination of hormone and moist chilling treatments promoted seed germination in both dark and light/dark conditions. After 4-month-moist chilling treatment, seeds germinated 27% in a light/dark and 80% in a dark regime. Hormone and moist chilling treatments reduced the mean germination time. Our results showed that J. supina seeds have physiological dormancy, require prolonged times of moist chilling and preferentially complete germination in darkness.
{"title":"Breaking of dormancy in the narrow endemic Jasione supina Sieber\u0000subsp. supina (Campanulaceae) with small seeds that do not need light to germinate","authors":"G. Güleryüz, S. Kırmızı, H. Arslan, Elif Güleryüz","doi":"10.37427/botcro-2021-009","DOIUrl":"https://doi.org/10.37427/botcro-2021-009","url":null,"abstract":"The germination properties of Jasione supina Sieber subsp. supina (Campanulaceae), which is endemic to Mount Uludağ, Bursa, Turkey, were determined. In this study, we investigated the effects of GA3, the combination of hormone series and short-term moist chilling (1-month), and long-term moist chilling (4-month) on the germination percentage and\u0000mean germination time in relation to seed dormancy breaking. All treatment series were incubated under continuous dark (20 °C, 24 h) and light/dark (20/10 °C, 12/12 h) conditions. Seeds were collected from specimens widespread on the alpine and subalpine grasslands and dwarf shrubs of Mount Uludağ (1800–1900 m a.s.l.). Depending on the concentration, GA3 and the combination of hormone and moist chilling treatments promoted seed germination in both dark and light/dark conditions. After 4-month-moist chilling treatment, seeds germinated 27%\u0000in a light/dark and 80% in a dark regime. Hormone and moist chilling treatments reduced the mean germination time. Our results showed that J.\u0000supina seeds have physiological dormancy, require prolonged times of moist chilling and preferentially complete germination in darkness.","PeriodicalId":6967,"journal":{"name":"Acta Botanica Croatica","volume":" ","pages":""},"PeriodicalIF":1.3,"publicationDate":"2020-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.37427/botcro-2021-009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42770238","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}
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