R.S. Romanets's research while affiliated with Tomsk State University and other places
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Publications (13)
This paper continues consideration of the spores of three paleotropical fern genera – Taenitis, Syngramma, and Austrogramme (Pteridoideae, Pteridaceae) from South-Eastern Asia and Oceania. At the second stage, we carried out a comparative scanning electron microscopy study of spores of three species of Austrogramme, four species of Syngramma, and s...
The results of molecular phylogenetic studies based on the sequencing of matK gene and trnG-R intergenic spacer of the chloroplast DNA and analysis of the concatenated data of these loci of North Asian representatives of the Cystopteridaceae family are presented. In the genus Gymnocarpium, a dryopteris-clade was distinguished including species with...
The survey is directed at revealing of the natural reserves of 9 species of Rosaceae family in the Southern Siberia: Agrimonia pilosa Ledeb., Alchemilla vulgaris L. s.l., Filipendula ulmaria (L.) Maxim., F. vulgaris Moench., F. stepposa Juz., and Pentaphylloides fruticosa (L.) O. Schwarz. Raw materials of these species are considered as a strategic...
A comparative study of spores of seven species: Taenitis blechnoides (Willd.) Sw., T. hookeri (C. Chr.) Holttum, T. pinnata (J. Sm.) Holttum, Syngramma alismifolia (Presl) J. Sm., S. lobbiana (Hook.) J. Sm., S. quinata (Hook.) Carruth., and Austrogramme boerlageana (Alderw.) Hennipman from South-Eastern Asia was performed using the method of scanni...
A study of spores of the single species of the genus Parahemionitis Panigrahi was performed using the method of scanning electronic microscopy (SEM). Spores of Parahemionitis arifolia (Burm. f.) Panigrahi are tetrahedral trilete, roundish-triangular in polar position, with micro-wrinkled exospore and sculptured perispore. Sculpture of perispore is...
The genus Stipa in the Altai territory is represented by 12 species (Lomonosova, 2003, Silanteva, 2013, Gudkova et al., 2015). Stipacapillata L., which belongs to the Leiostipa Dumor. section, is one of the most widespread species of this genus. Besides S. capillata, two more species of this section – S. praecapillata Alech. and S. Baicalensis Rosh...
A comparative study of spores of four species of Haplopteris C. Presl, H. amboinensis (Fée) X.C. Zhang, H. forrestiana (Ching) E.H. Crane, H. linearifolia (Ching) X.C. Zhang, and H. mediosora (Hayata) X.C. Zhang, from China was performed using the method of scanning electronic microscopy (SEM). Spores of Haplopteris species are bilateral monolete e...
A comparative study of spores of two species of Vaginularia (Vittarioideae, Pteridaceae) from South-Eastern – Vaginularia paradoxa (Fée) Mett. ex Miq. and V. trichoidea Fée – was performed by the method of scanning electronic microscopy (SEM). Spores are tetrahedral, trilete; they are very similar to each other in smooth surface and relatively narr...
Comparative investigation of the spore surface ultrastructure of six specimens of Pityrogramma calomelanos (L.) Link (Pteridoideae, Pteridaceae) was carried out with using of scanning electronic microscopy (SEM). Specimens of Pityrogramma calomelanos were collected in the different parts of its range: in South China (Hainan Island), Nepal, Honduras...
The ultrastructure of the spore surface of Onychium ipii Ching (Pteridoideae, Pteridaceae) was investigated by using of scanning electron microscopy. Spores of Onychium ipii are trilete, tetrahedral, with hemispherical distal side and convex proximal one. Equatorial diameter 42.4-48.1 μm, polar axis 35.7-40.6 μm. Distal and proximal sides are separ...
The ultrastructure of the spore surface of 6 species Cystopteris Bernh. subgenus Cystopteris (Cystopteridaceae): C. almaatensis Kotukhov, C. altajensis Gureeva, C. dickieana R. Sim, C. fragilis (L.) Bernh. C. gureevae Stepanov, C. protrusa (Weatherby) Blasdell was investigated by using of scanning electron microscopy. On the basis of differences in...
p>Scanning electron microscopy (SEM) was used to perform a comparative study for four representatives of the subfamily Ceratopteridoideae (J. Sm.) R.M. Tryon from East Asia: Ceratopteris thalictroides Brongn., C. pteridoides (Hook.) Hieron., Acrostichum aureum Linn., and A. speciosum Willd. The analysis of the external morphology of the representat...
We used the method of scanning electron microscopy (SEM) to study the representatives of the genus Anogramma from South-West Asia and the Himalayas. To confirm the presence of Cerosora microphylla (Hook.) R.M. Tryon in China (hence, the absence of Anogramma microphylla (Hook.) Diels), we revealed the features of external morphology of spores that a...
Citations
... Based on this reaction, Yin et al. (2008) simulated spontaneous buckling of fruits and vegetables and reported a formation mechanism involving four geometrical parameters including the ratio of effective size/exine thickness, the ratio of equatorial/polar radii, the ratio of substrate/ lm elastic moduli, and the ratio of maximum stress/critical stress by using the Finite Element Method (FEM) in spheroid models. However, although distantly related, spores of fungi, spores and pollen and fruits of plants share a similar, approximately spheroidal shape with an inner layer (intine) and an outer layer (exine) ( Vaganov et al., 2021). In this study, the walls of spores and pollen were reduced into two layers (exine/intine) and they were assumed to be homogeneous. ...
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... A detailed comparative morphological analysis of spore characters together with the phylogenetic relationship in the subfamily Pteridoideae led to the following conclusions: Their presence or their absence allows to identify taxa accurately at species rank. These results are consistent with results of the analysis of other taxa from subfamilies Ceratopteridoideae (Adeonipekun, Adebayo, & Oyebanji, 2021; and Pteridoideae (Adeonipekun et al., 2021;Chao & Huang, 2018;Irfan et al., 2021;Vaganov, Gureyeva, Shmakov, Kuznetsov, & Romanets, 2018;Wang & Yu, 2003;Yu et al., 2001). Smith et al., 2006). ...
... The spore morphology of Cheilanthoideae and Pteridoideae (Pteridaceae) species observed under SEM represents variations in size, shape, aperture and surface ornamentation, as described in many previous studies (Giacosa, Morbelli, & Giudice, 2004;Makgomol, 2006;Nayar & Devi, 1966, 1967Vaganov, Gureyeva, Shmakov, Kuznetsov, & Romanets, 2018a, 2018b Nayar and Devi (1967) reported spore size 47 Â 60 μm, with trilete, tetrahedral shape and verrucate and rugulose ornamentation; while Vaganov et al. (2020) reported spore size 46 Â 49 μm. The spores of Aleuritopteris albomarginata and A. ancepes were observed to be trilete, tetrahedral, that agreed with the earlier work of Sen and Mukhopadhay (2011) and Tryon and Lugardon (1991 Morbelli et al. (2001) and Nayar andDevi (1966, 1967 et al. (1990) and Vaganov et al. (2017Vaganov et al. ( , 2020. ...
... Flora of China includes 13 species (Zhang et al., 2013). Our previous studies of spores of some Pteridaceae groups are shown that spore morphology studied using SEM-method and molecular-phylogenetic results are congruent for different genera such as Onichium (Vaganov et al., 2017a), Pityrogramma (Vaganov et al., 2017b), Vaginularia (Vaganov et al., 2017c). Morphology of spores is very important for systematics of subfamilies Pteridoideae (Kuznetsov, 2014), Cryptogrammoideae (Vaganov, 2016) and Ceratopteridoideae (Vaganov et al., 2017c). ...
... Такое разнообразие местообитаний обуславливает высокий полиморфизм вида. Во многих ключах в качестве диагностического указываются следующие признаки: узлы, скрытые влагалищем листа и вершина нижней цветковой чешуи совершенно лишена трихом (без коронки волосков), однако наши исследования морфологической (Gudkova et al., 2017) и генетической (Baiakhmetov et al., неопубликованное) изменчивости показали, что данные признаки варьируют: влагалища могут не превышать междоузлия и на вершине нижней цветковой чешуи могут быть единичные шипики. Варьирование этих признаков наблюдается на всем ареале вида. ...
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... Various resources were used to inform the research: scientific articles [5][6][7][8], global databases [9, 10] and personal data archives [3,11]. Samples of the original data are given in figure 1. ...
... Spore morphology of species of the large fern family Pteridaceae has been discussed in the numerous works (Hennipman, 1975;Tryon, Lugardon, 1991;Palacios-Rios et al., 2016;Chao, Huang, 2018;Irfan et al., 2021) including ours (Kuznetsov et al., 2014;Vaganov, 2016;Vaganov et al., 2017aVaganov et al., -d, 2018a (Gureyeva, Kuznetsov, 2015;Vaganov et al., 2017a-c). Data of spore morphology of some species of Austrogramme, Syngramma, and Taenitis obtained using scanning electron microscopy were published in 1991 by A. Tryon and B. Lugardon (11 species in sum). ...
... Для последнего присущи небольшие размеры вай с двойным рассечением. Также у видов C. dickieana и C. almaatensis наблюдаются различия в размерах спор и структуре периспория (Ulko et al., 2017;Batkin et al., 2020). Как самостоятельный вид C. dickieana приводится для Прихубсугульского и Хангайского р-нов Монголии (Gubanov, 1996). ...
... The spore morphology of Cheilanthoideae and Pteridoideae (Pteridaceae) species observed under SEM represents variations in size, shape, aperture and surface ornamentation, as described in many previous studies (Giacosa, Morbelli, & Giudice, 2004;Makgomol, 2006;Nayar & Devi, 1966, 1967Vaganov, Gureyeva, Shmakov, Kuznetsov, & Romanets, 2018a, 2018b Nayar and Devi (1967) reported spore size 47 Â 60 μm, with trilete, tetrahedral shape and verrucate and rugulose ornamentation; while Vaganov et al. (2020) reported spore size 46 Â 49 μm. The spores of Aleuritopteris albomarginata and A. ancepes were observed to be trilete, tetrahedral, that agreed with the earlier work of Sen and Mukhopadhay (2011) and Tryon and Lugardon (1991 Morbelli et al. (2001) and Nayar andDevi (1966, 1967 et al. (1990) and Vaganov et al. (2017Vaganov et al. ( , 2020. The spores of Pteris cretica subsp. ...
... Spore morphological aspects have been investigated since early days and major fern families studied were Aspleniaceae, Blechnaceae, Polypodiaceae, Pteridaceae and Grammitidaceae (Nayar and Devi, 1963). Over the years, spore morphology in fern and fernallies have been observed and studied with the aid of light microscopy and scanning electron microscopy (Tryon and Lugardon, 1991;Shaojun et al. 2002;Zenkteler, 2012;Li et al. 2013;Vaganov et al. 2017;Mazumdar, 2018;Shah et al. 2019;Ullah et al. 2018, Adeonipekun et al. 2021. ...
