MICROMORPHOLOGICAL STRUCTURE OF SEEDS IN SOME SPECIES OF LATHYRUS L. IN SOUTH CAUCASUS (AZERBAIJAN)

2020 ◽  
Vol 6(72) (1) ◽  
pp. 14-25
Author(s):  
G. F. Allahverdiyeva ◽  
A. M. Asgarov
Keyword(s):  
Side Surface ◽  
Morphological Characters ◽  
Morphological Properties ◽  
South Caucasus ◽  
General Shape ◽  
Taxonomic Importance ◽  
The Status ◽  
Different Populations ◽  
First Time ◽  
Electronic Microscope

For the first time, micromorphology structure of seeds in 10 species (L. annuus, L. cicera, L. hirsutus, L. tuberosus, L. miniatus, L. pratensis, L. laxiflorus, L. aphaca, L. nissolia, L. sphaericus) belonging to sections (Lathyrus, Pratensis, Aphaca, Nissolia, Linearicarpus) of Lathyrus L. collected from various regions of Azerbaijan were analysed. Seed samples of 10 species were taken for analysis from different biotopes and different populations located away from one-another. Collected seed materials were gathered in special sterile paper bags and their moisture was dried with silicagel substance in laboratory conditions. During the research, morphological characters, as well as general shape, size and colour of seed, length and width of hilum were identified under Leica EZ4D stereomicroscope. The largest seeds have been measured in Lathyrus (L. cicera 4,4–5,0 mm) section and the smallest seeds in Nissolia (L. nissolia 1,8–2,3 mm) section. The longest hilum belongs to L. miniatus 1,8–2,8 mm and the smallest in L. Nissolia 0,4–0,7 mm. The width hilum was measured in L. annuus (0,7–1,0 mm) and the narrow hilum L. nissolia (0,1–0,3 mm). Mature seed (2–3) samples were selected from each type under the SEM, the seeds were placed on stools with double-sided adhesive tapes and covered with gold powder through the JEOL JFC1600 ion-spray device for 1 to 2 minutes. Seed samples were researched on the side surface. The photos of the surface of seeds were taken in a 3000× size in JEOL JSM6610 lv electronic microscope, and structural analysis of the different places of their surfaces was conducted. The results showed that the microscopic research of the surface of seed is of taxonomic importance and is used in specification of the status of sections. The morphological properties such as surface structure, hilum length and width, papillae features can be used to differentiate some sections and species, but seed size, general shape seed and hilum, seed colour are not characteristics can be used to differentiate some sections.

scholarly journals RESEARCHES OF MICROMORPHOLOGICAL FEATURES OF SEEDS OF TRIFOLIUM L. OF FLORA OF THE SOUTH CAUCASUS (AZERBAIJAN REPUBLIC,TALYSH) ON ELECTRONIC MICROSCOPE (SEM) AND THEIR TAXONOMIC MEANING

2020 ◽  
Vol 6(72) (2) ◽  
pp. 138-148
Author(s):  
K. A. Mammadyarova ◽  
A. M. Asgarov
Keyword(s):  
Electron Microscope ◽  
Surface Structure ◽  
Morphological Features ◽  
South Caucasus ◽  
Size And Shape ◽  
The Status ◽  
First Time ◽  
Seed Characteristics ◽  
Electronic Microscope ◽  
Seeds And Fruits

In monographs on Trifolium L., in «Atlas of seeds and fruits of the Central and East” as well as in articles published in prestigious journals the importance of seed characteristics in the taxonomy of clovers is pointed. Among the signs of seeds, the shape of the surface, the structure, size, and shape of their hilum are recorded. In addition, in many «Flora» and «Determinants» there is no data of the seeds, especially their micromorphological features in the description of the species of clover. Takinginto account the above, we studied the shape and structure of 8 species of clovers under an electron microscope. For the first time, micromorphological features of seeds of 8 species (T. angustifolium, T. pratense, T. lappaceum, T. subterraneum, T. resupinatum, T. tumens, T. campestre) of clovers (Trifolium L.) of the Talysh flora, collected from the Lankaran-Lerik region of the Azerbaijan Republic, belonging to 4 subgroups and 6 sections were studied on an electron microscope (SEM). The shape of the seeds, their size, color, surface structure, the shape of hilum and their sizes are important taxonomic features. The structure of seeds of the studied species refers to 4 types: seeds with granular surfaces; seeds with tuberculate surfaces; seeds, which have a surface with crystal-like ledges. Features of the structure of seeds can be used, when specifying the status of subgenera; and sections, the remaining morphological features — when determining species of the genus of clover.

scholarly journals Taxonomic review of chinas (Lathyrus L.) species in the flora of Azerbaijan

2020 ◽  
pp. 47-56
Author(s):  
G. F. Allahverdieva ◽  
A. M. Askerov
Keyword(s):  
Electron Microscope ◽  
Literature Review ◽  
Scanning Electron Microscope ◽  
Morphological Characters ◽  
The South ◽  
South Caucasus ◽  
Taxonomic Review ◽  
The Status ◽  
First Time ◽  
Scanning Electron

As a result of the expedition, herbarium and literature review, the article presents a new conspectus of the genus Lathyrus L. s. l. of the South Caucasus (Azerbaijan Republic). The study revealed a new area of two species (L. hirsutus L., L. inconspicuus L.) and clarified the status of one species (L. leptophyllus Bieb.). For the first time, micromorphology structure of seeds in some species (L. annuus, L. cicera, L. hirsutus, L. tuberosus, L. miniatus, L. pratensis, L. laxiflorus, L. aphaca, L. nissolia, L. sphaericus) were included by scanning electron microscope. Morphological characters of the sections were analysed according to Kupicha with some additions. Our work showed that Lathyrus seeds are circular, pressed-angular, elliptical, coloured in brown tones, with tuberculate, smooth, reticulate-rugulose surface. In the article, in contrast to the classification according to "Flora of Azerbaijan", species belonging to the genus Orobus are included in the genus Lathyrus.

Chromosome banding analysis of two shrews of the cinereus group: Sorex haydeni and Sorex cinereus (Insectivora, Soricidae)

1994 ◽  
Vol 72 (5) ◽  
pp. 958-964 ◽  
Author(s):  
Vitaly T. Volobouev ◽  
Constantinus G. van Zyll de Jong
Keyword(s):  
Pericentric Inversion ◽  
Chromosome Banding ◽  
Morphological Characters ◽  
Y Chromosomes ◽  
Banding Analysis ◽  
Chromosome Banding Analysis ◽  
Sorex Cinereus ◽  
The Status ◽  
First Time ◽  
Independent Species

The chromosomes of Sorex haydeni are described for the first time and their banding pattern (R- and C-bands) compared with that of Sorex cinereus. The karyotype of S. haydeni differs from that of S. cinereus in its diploid (64 vs. 66) and fundamental numbers (66 vs. 70). These differences are the result of one tandem translocation and one pericentric inversion. The size and form of the Y chromosomes are also quite different in these taxa. The karyotypic differences strongly support the status of independent species, proposed for these taxa earlier on the basis of gross morphological characters.

scholarly journals Reassessment of the taxonomic status of Pseudopaludicola parnaiba (Anura, Leptodactylidae, Leiuperinae), with the description of a new cryptic species from the Brazilian Cerrado

2020 ◽  
Author(s):  
Felipe Silva De Andrade ◽  
Isabelle Aquemi Haga ◽  
Mariana Lúcio Lyra ◽  
Thiago Ribeiro De Carvalho ◽  
Célio Fernando Baptista Haddad ◽  
...  
Keyword(s):  
Cryptic Species ◽  
Taxonomic Status ◽  
Distinct Species ◽  
Advertisement Call ◽  
Central Brazil ◽  
The Status ◽  
Different Populations ◽  
First Time ◽  
A New Species ◽  
Specific Identity

The Neotropical frog genus Pseudopaludicola includes 25 species distributed throughout South America. Herein we review the taxonomic status of P. parnaiba relative to P. canga and the specific identity of the population treated in previous studies as Pseudopaludicola sp. 3 from Barreirinhas in the Brazilian state of Maranhão. The lack of differentiation in advertisement call, morphology, and mitochondrial markers from topotypes and different populations rejects the status of P. parnaiba and Pseudopaludicola sp. 3 from Barreirinhas as distinct species. For these reasons, we suggest to formally consider P. parnaiba as a junior synonym of P. canga. We also found that a population previously reported as P. facureae from central Brazil (Palmeiras de Goiás, Goiás) corresponds to a cryptic species that we describe here as a new species. Lastly, we provide for the first time the phylogenetic positions of P. giarettai, P. llanera and P. pusilla.

Phylogenetic analysis and taxonomy of the subgenus Gnathopaederus Chapin and related groups of Paederus s.l. (Coleoptera:Staphylinidae:Paederinae)

2009 ◽  
Vol 23 (5) ◽  
pp. 422
Author(s):  
Xiao-Yan Li ◽  
Hong-Zhang Zhou
Keyword(s):  
Phylogenetic Analysis ◽  
Type Species ◽  
Morphological Characters ◽  
Character State ◽  
Robust Solution ◽  
Current Classification ◽  
The Status ◽  
Definition Of ◽  
Taxonomic Studies ◽  
First Time

The paederine genus Paederus s.l. (Coleoptera : Staphylinidae) is a hyperdiverse group of some 500 species worldwide. Although the subtribe Paederina, in which the genus resides, is monophyletic the status of numerous genera and subgenera is questionable and the current classification is likely to be flawed. As part of detailed studies on the paederine fauna of China, we undertook a preliminary morphologically-based phylogenetic analysis to determine the relationships of Paederus (Gnathopaederus) and related subgenera, as a basis for a revision of the subgenus, and as an attempt to provide a better framework for future taxonomic studies on the group as a whole. The analysis was based on 66 adult morphological characters for 30 ingroup taxa, including all six species of P. (Gnathopaederus). The results show that P. (Gnathopaederus) and P. (Paederus), and the genera Megalopaederus, Pachypaederus and Paederidus are monophyletic, and that P. (Eopaederus) and P. (Harpopaederus) are paraphylyetic. However, our analysis did not offer a robust solution to relationships among other clades within Paederus s.l. although it seems clear that Paederus s.l. is not monophyletic with respect to the above genera. The monophyly of P. (Gnathopaederus) is supported by the mandibular basal medial tooth having two cuspids separated dorsoventrally. Based largely on this character state, the definition of the subgenus is refined; six species are recognized, including two new species described from China as follows: P. (G.) daozhenensis, sp. nov. from Guizhou, and P. (G.) jilongensis, sp. nov. from Xizang; three species, P. bursavacua Willers, P. yunnanensis Willers and P. solodovnikovi Willers, are newly assigned to the subgenus according to a revised subgeneric definition. New morphological characters including important secondary sexual characters and sexual dimorphism are described and male genitalia are illustrated for the first time for the type species of the subgenus, P. (G.) szechuanus (Chapin). A key to the six species is presented and the distribution of each species is documented and discussed.

scholarly journals Species of Centaurium Hill. in Iraq and its geographical distribution

2013 ◽  
Vol 10 (1) ◽  
pp. 22-31
Author(s):  
Baghdad Science Journal
Keyword(s):  
Geographical Distribution ◽  
Morphological Characters ◽  
Reproductive Organs ◽  
Taxonomic Study ◽  
Taxonomic Key ◽  
Taxonomic Importance ◽  
Species Separation ◽  
First Time ◽  
Time Form

Comparative taxonomic study has been compeleted for the species of the. genus Centaurium Hill. of Iraq. So the morphological characters were studied comparatively for the first time form Iraqi materials. Stems, leaves ,infloresences and reproductive organs characters were a good taxonomic importance. Geographical distrtribution has been done for the species of the genus in addition to the environment information. The results were presented with schedules, tables, maps and micrographs. Taxonomic key for the species separation was also presented.

scholarly journals Er øko et konfiks eller er det igen blevet til en rod?

2016 ◽  
Vol 20 (1) ◽  
pp. 265-274
Author(s):  
Andrzej Szubert
Keyword(s):  
Morphological Properties ◽  
German Language ◽  
The Status ◽  
First Time ◽  
The Way

Abstract The term Fr. confixe is not new and was used for the first time in 1982 but at present it is actually only used in German language linguistic literature. Confixes are morphemes of Latin and Greek origin that can form words with stems, affixes and other confixes. The article is an attempt at describing the confix øko- in the Danish language as well as its semantic and morphological properties. The status of confixes is unusual because they are actually bound morphemes with the exception that two confixes can form a word. The use of øko- shows that it is on the way to becoming a free morpheme (root), or perhaps it has become it already.

Revision of the Australian Stephanidae (Hymenoptera)

2001 ◽  
Vol 15 (6) ◽  
pp. 763 ◽  
Author(s):  
Alexandre P. Aguiar
Keyword(s):  
New Taxa ◽  
Morphological Characters ◽  
Junior Synonym ◽  
Valid Species ◽  
As Species ◽  
Taxonomic Importance ◽  
History Of ◽  
Character Set ◽  
Taxonomic Studies ◽  
First Time

The Australian Stephanidae (Hymenoptera) are revised and keyed. Three genera and 21 species (15 new) are recognised. The taxonomic importance of over 300 morphological characters, including 45 morphometric ratios, is assessed. The history of introduction and establishment of Schlettererius cinctipes in Australia is summarised. Stephanus crassicauda Morley is transferred to Megischus, the female is redescribed and the male is reported for the first time and compared with the female. Occurrence of the Neotropical genus Hemistephanus in Australia is refuted and M. giganteus (Girault) is synonymised with M. crassicauda (Morley). The groundplan of Australian Parastephanellus is described in detail and a new character set is proposed for taxonomic studies and descriptions of its species, P. albiceps Elliott is proposed as a junior synonym of P. damellicus (Westwood) and P. picticeps Roman is placed as species inquirendum. New taxa are Megischus ceneonatrix, Parastephanellus albigenuis, P. adiazetos, P. brevis, P. callidictyon, P. denotatus, P. isoglyptos, P. laevigatus, P. maculatus, P. platyceratus, P. squamatus, P. strigosus, P. tanytarsus, P. trifasciatus and P. vertipictus. Other valid species from Australia are P. caudatus Elliott and P. rufoornatus (Cameron).

Chromosome and morphological studies in the Mimosa debilis complex (Mimosoideae, Leguminosae) from southern South America

2010 ◽  
Vol 58 (1) ◽  
pp. 12 ◽  
Author(s):  
Matías Morales ◽  
Arturo F. Wulff ◽  
Renée H. Fortunato ◽  
Lidia Poggio
Keyword(s):  
Chromosome Numbers ◽  
Floral Morphology ◽  
Morphological Characters ◽  
Present Contribution ◽  
Ploidy Levels ◽  
Morphological Studies ◽  
Hybrid Swarms ◽  
Different Populations ◽  
First Time ◽  
Different Origin

Mimosa debilis Humb. & Bonpl. ex Willd. and M. nuda Benth. were grouped in specific and infraspecific complexes. Both taxa showed exomorphological similarities, with conflicts in their taxonomic circumscription and present different ploidy levels. The objective of the present contribution was to analyse chromosome numbers of different populations and to evaluate morphological characters of specimens from Paraguay, Argentina and boundary regions. Chromosome numbers of M. debilis var. debilis (2n = 2x = 26 and 2n = 4x = 52) confirmed previous reports, whereas those of M. nuda var. glaberrima (2x = 26, 4x = 52), M. nuda var. gracilipes (2x = 26, 4x = 52) and M. nuda var. nuda (4x = 52) are presented for the first time. Variation was observed in habit, foliar and floral morphology and was correlated with the chromosome number and the geographical distribution of the taxa. Groups with stable morphological characters and restricted geographic distribution were identified. Also, the results showed a pattern of hybrid swarms and polyploids of different origin that may explain the existence of taxonomic conflicts in the M. debilis–M. nuda species complex. On the basis of these results, M. nuda should be included in the synonymy of M. debilis.

A taxonomic revision of the orb-weaving spider genus Acusilas Simon, 1895 (Araneae, Araneidae)

2008 ◽  
Vol 39 (1) ◽  
pp. 1-38 ◽  
Author(s):  
Nikolaj Scharff ◽  
Jesper Birkedal Schmidt
Keyword(s):  
Phylogenetic Analysis ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Incertae Sedis ◽  
The Matrix ◽  
The Status ◽  
First Time ◽  
Unassigned Species ◽  
Unknown Male

AbstractThe spider genus Acusilas Simon, 1895 (Araneidae) is revised. It includes Acusilas africanus Simon, 1895; Acusilas callidus sp. n.; Acusilas coccineus Simon, 1895; Acusilas dahoneus Barrion & Litsinger, 1995; Acusilas lepidus (Thorell, 1898); Acusilas malaccensis Murphy & Murphy, 1983; Acusilas spiralis sp. n.; Acusilas vei sp. n.; Acusilas vilei sp. n., and one unassigned species of Acusilas from Sulawesi for which only females are available. The status of Acusilas lepidus (Thorell, 1898) is uncertain and the species is here considered incertae sedis. The unknown male of Acusilas africanus Simon, 1895 is described and illustrated for the first time and Acusilas gentingensis (Murphy & Murphy) is a synonym of Acusilas coccineus Simon, 1895. A phylogenetic analysis of the matrix of Scharff & Coddington (1997) with the addition of Acusilas coccineus, suggests sistergroup relationship between Acusilas and cyrthophorines (Cyrthophora and Mecynogea). This knowledge is used to select 6 outgroup taxa for a phylogenetic analysis based on 39 morphological characters scored for the 9 known species of Acusilas. The phylogenetic analysis supports the monophyly of Acusilas, but ingroup relationships are only weakly supported.

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