Taxonomy of the New World species of Lotus (Leguminosae: Loteae)

2005 ◽  
Vol 53 (8) ◽  
pp. 797 ◽  
Author(s):  
Ana M. Arambarri ◽  
Sebastián A. Stenglein ◽  
Marta N. Colares ◽  
María C. Novoa
Keyword(s):  
New World ◽  
Arithmetic Average ◽  
Operational Taxonomic Units ◽  
Pair Group ◽  
Molecular Phylogenetic ◽  
Species Groups ◽  
Phylogenetic Hypotheses ◽  
Vegetative Characters ◽  
Numerical Taxonomic Study ◽  
Reproductive Characters

The aims of the present study were to elucidate the relationships of the New World Lotus species groups, subgenera Acmispon Raf. (sections Microlotus Benth. and Simpeteria Ottley), Hosackia Benth. and Syrmatium Vog., and to compare these results with previous classifications and recent morphological and molecular phylogenetic hypotheses. A numerical taxonomic study using unweighted pair-group arithmetic average clustering was performed. The phenogram was generated from 34 operational taxonomic units (OTUs) × 41 characters (four vegetative characters and the basic chromosome numbers, 16 epidermal traits and 20 reproductive characters). The epidermal microcharacters (epidermal cells, stomata, stomatal index and trichomes) are described and summarised for 18 species of Hosackia and Syrmatium, and the remaining characters were derived from the literature. Phenetic results resolved four groups of species which coincide with the new genera Acmispon, Hosackia Douglas ex Benth., Ottleya D.D.Sokoloff and Syrmatium proposed, having taken into consideration the most recent morphological and phylogenetic hypotheses.

Leaf epidermal characteristics of Lotus subgenus Acmispon (Fabaceae: Loteae) and a numerical taxonomic evaluation

2003 ◽  
Vol 81 (9) ◽  
pp. 933-944 ◽  
Author(s):  
Sebastián A Stenglein ◽  
Ana M Arambarri ◽  
Marta N Colares ◽  
María C Novoa ◽  
Claudia E Vizcaíno
Keyword(s):  
Morphological Data ◽  
Phylogenetic Hypothesis ◽  
Arithmetic Average ◽  
Operational Taxonomic Units ◽  
Pair Group ◽  
Phenetic Relationships ◽  
Anatomical Characters ◽  
Microscopy Data ◽  
Taxonomic Evaluation ◽  
Unweighted Pair Group Arithmetic

This paper describes the leaf epidermal characteristics of the New World species of Lotus L. subgenus Acmispon Raf. (Fabaceae: Loteae), computes their phenetic relationships based on morphological and anatomical characters, and compares these results with previous classifications and a recent phylogenetic hypothesis for the group based on morphological data. Leaves of 16 species of Acmispon were cleared and examined using light microscopy. Data on epidermal cells, stomata, stomatal index, and trichomes were described and summarized. To test the taxonomic value of epidermal characters and to ascertain phenetic relationships, we performed two numerical analyses using unweighted pair-group arithmetic average clustering. Results of the numerical analysis (16 operational taxonomic units (OTUs) × 13 epidermal characters) suggested that epidermal characteristics are insufficient to resolve sections Simpeteria and Microlotus. An additional analysis (16 OTUs × 23 characters) demonstrated that epidermal micro morphological features, together with other characters, are useful and informative for distinguishing these two sections. Results generated by the latter analysis accord well with earlier classifications and a previous phylogenetic hypothesis by showing that the sections Simpeteria and Microlotus are coincident with the two monophyletic subgroups Grandiflorus and Salsuginosus, respectively, inferred using cladistic analysis.Key words: Acmispon, epidermis, Fabaceae, Loteae, Lotus, Microlotus, Simpeteria.

Leaf epidermal microcharacters of the Old World species of Lotus (Leguminosae: Loteae) and their systematic significance

2003 ◽  
Vol 51 (4) ◽  
pp. 459 ◽  
Author(s):  
Sebastián A. Stenglein ◽  
Marta N. Colares ◽  
Ana M. Arambarri ◽  
María C. Novoa ◽  
Claudia E. Vizcaíno ◽  
...  
Keyword(s):  
Morphological Characters ◽  
Data Matrix ◽  
Group Method ◽  
Old World ◽  
Pair Group ◽  
Phenetic Relationships ◽  
Close Relationship ◽  
Species Groups ◽  
Phylogenetic Hypotheses ◽  
Epidermal Features

Some perennial species of Lotus L. (Leguminosae: Loteae) from the Old World constitute an important forage resource. The epidermal microcharacters of 15 species belonging to the Old World Lotus angustissimus L., L. corniculatus L., L. creticus L. and L. peregrinus L. groups were described to compute the phenetic relationships, and to compare these results with previous classifications and phylogenetic hypotheses. Data on epidermal cells, stomata, stomatal indeces and trichomes were recorded and summarised in tables and illustrations. To test the taxonomic value of epidermal features and to establish the phenetic relationships, two numerical analyses were performed. Phenograms by the unweighted pair-group method (UPGMA) of clustering were generated. Results of the numerical analysis using a basic data matrix (15 operational taxonomic units × 15 epidermal characters) suggested that epidermal characteristics make it possible to establish species' and species groups' relationships; however, they were not totally coincident with previous classifications. An additional analysis using epidermal characters plus other morphological characters from leaves, flowers, fruits and seeds led to establish species' and species groups' relationships. Results generated by the latter analysis demonstrated that epidermal traits, together with other characters, are useful and informative for testing species clustering. Phenetic results coincide with earlier classifications and chromosome-number studies and accord well with a previous phylogenetic hypothesis in showing the close relationship among species of the Old World Lotus groups included in this study.

Systematics of Robustagramma, a new genus of New World Sphaeroceridae (Diptera)

Zootaxa ◽  
2005 ◽  
Vol 1026 (1) ◽  
pp. 1 ◽  
Author(s):  
STEPHEN A. MARSHALL ◽  
YONGSHENG CUI
Keyword(s):  
New World ◽  
New Genus ◽  
Species Groups ◽  
Phylogenetic Hypotheses

The genus Robustagramma is described for a distinctive clade of Limosininae occurring from Canada south to Argentina. Keys, descriptions, distributional data and phylogenetic hypotheses are provided for 8 species groups and 54 species. Fifty-two of the 54 included species are described as new.

scholarly journals Revision of the orchid bee subgenus Euglossella (Hymenoptera: Apidae), part II: The viridis and mandibularis species groups

2014 ◽  
pp. 1 ◽  
Author(s):  
Ismael A. Hinojosa-Díaz ◽  
Michael S. Engel
Keyword(s):  
New Species ◽  
Morphological Variation ◽  
Final Part ◽  
Orchid Bee ◽  
Chemical Attractants ◽  
Molecular Phylogenetic ◽  
Species Groups ◽  
Males And Females ◽  
Phylogenetic Hypotheses ◽  
First Time

The second and final part of a revision of the subgenus Euglossella Moure in the orchid bee genus Euglossa Latreille (Apinae: Euglossini) is presented here, redefining the species groups within it to comply with current morphological and molecular phylogenetic hypotheses.  We present a fully illustrated account of the species comprising the newly defined viridis and mandibularis species groups, with comparable diagnoses for all species, keys to the new scheme of species groups within the subgenus, and keys for males and females to the species of the two groups here treated.  The viridis group as presented here is composed of 12 species, five of them newly described — Euglossa (Euglossella) celiae Hinojosa-Díaz & Engel, new species, E. (E.) subandina Hinojosa-Díaz & Engel, new species, E. (E.) cetera Hinojosa-Díaz & Engel, new species, E. (E.) cupella Hinojosa-Díaz & Engel, new species, and E. (E.) ashei Hinojosa-Díaz & Engel, new species — and one resurrected from synonymy as E. (E.) azurea Ducke.  Euglossa (Euglossella) viridis (Perty), E. (E.) cyanea Friese, E. (E.) polita Ducke, E. (E.) perviridis Dressler, E. (E.) cyanura Cockerell, and E. (E.) granti Cheesman comprise the remaining species within the group.  Females of E. perviridis are described for the first time.  The mandibularis group includes three species — E. (E.) mandibularis Friese, E. (E.) bigibba Dressler, and E. (E.) perfulgens Moure.  In total, considering the six species previously included in the decorata group, the subgenus now includes a total of 21 species.  New country records are presented for E. viridis, E. perviridis, and E. mandibularis.  Notes on morphological variation and distribution are included as is a summary of known chemical attractants and floral substrates.

scholarly journals Hubungan Kekerabatan Kultivar Talas (Colocasia esculenta) Berdasarkan Karakter Morfologi Organ Vegetatif (The Phenetic Relationship among Taro Cultivar (Colocasia esculenta) Based on Vegetative Morphological Characters)

2014 ◽  
Vol 4 (1) ◽  
Author(s):  
Hafsah Hafsah ◽  
Topik Hidayat ◽  
Kusdianti Kusdianti
Keyword(s):  
Computer Software ◽  
Morphological Characters ◽  
Colocasia Esculenta ◽  
Group Method ◽  
Dominant Position ◽  
Arithmetic Average ◽  
Pair Group ◽  
Close Relationship ◽  
Length Width ◽  
Vegetative Characters

Abstrak   Telah dilakukan penelitian mengenai hubungan kekerabatan pada delapan kultivar talas (Colocasia esculenta) berdasarkan karakter morfologi organ vegetatif. Kultivar-kultivar tersebut yakni talas kaliurang, burkok, bentul, bogor, sutra, kudo, lampung dan semir. Total karakter yang diamati berjumlah 35 karakter. Karakter-karakter tersebut kemudian dibuat skoring. Hasil skoring dianalisis dengan metode UPGMA (Unwight Pair Group Method with Arithmetic Average) menggunakan program komputer PAUP versi 4.0b10 sehingga terbentuk fenogram. Hasil penelitian menunjukkan variasi morfologi organ vegetatif yang cukup tinggi. Dari seluruh karakter, hanya lima karakter yang tidak menunjukkan adanya perbedaan. Karakter tersebut yaitu bentuk daun dan ujung daun, rasio panjang terhadap lebar daun, pola tepi pelepah dan posisi dominan bentuk helai daun tua. Dari fenogram diketahui bahwa seluruh kultivar yang diamati membentuk dua kelompok utama. Kelompok pertama terdiri dari kaliurang, burkok, bentul, bogor, lampung dan sutra, yang membentuk tiga subkelompok. Kelompok kedua terdiri dari kudo dan semir. Hasil analisis fenetik menunjukkan kultivar bogor dan lampung merupakan dua kultivar yang sangat dekat hubungan kekerabatannya dengan nilai kesamaan sebesar 80%. Kata kunci : Colocasia esculenta, fenetik, kultivar, organ vegetatif Abstract This research was conducted to find out relationship on eight cultivars of taro (Colocasia esculanta) based on vegetative morphological characters. They were kaliurang, burkok, bentul, bogor, sutra, kudo, lampung and semir. Total characters observed were 35 characters and the scoring  was also performed. In order to form a phenogram, the scoring then were analyzed using computer software PAUP version 4.0b10, the UPGMA method (Unwight Pair Group Method with Arithmetic Average). Results showed that morphological variation of vegetative characters are quite high. Of all the characters, only five characters that indicated any significant differences. These characters were leaves shape, leaves tip shape, length-width leaves ratio, midrib leaves, and dominant position of the old leaves. From the phenogram, it was known that all cultivars observed were form into two main groups. The first group consists of kaliurang, burkok, bentul, bogor, lampung and sutra, which formed three subgroups. The second group consists of kudo and semir. The results of the phenetic analysis showed the cultivar bogor and lampung are two cultivars that are very close relationship ties with the similarity value of 80%. Keywords : Colocasia esculenta , phenetic, cultivars, vegetative

scholarly journals Genetic Diversity Among Some Walnut (Juglans regia L.) Genotypes by SSR Markers

2021 ◽  
Vol 13 (12) ◽  
pp. 6830
Author(s):  
Murat Guney ◽  
Salih Kafkas ◽  
Hakan Keles ◽  
Mozhgan Zarifikhosroshahi ◽  
Muhammet Ali Gundesli ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Plant Genetic Resources ◽  
Juglans Regia ◽  
Genetic Distances ◽  
Mean Value ◽  
Central Anatolia ◽  
Group Method ◽  
Arithmetic Average ◽  
Pair Group ◽  
Principal Coordinates

The food needs for increasing population, climatic changes, urbanization and industrialization, along with the destruction of forests, are the main challenges of modern life. Therefore, it is very important to evaluate plant genetic resources in order to cope with these problems. Therefore, in this study, a set of ninety-one walnut (Juglans regia L.) accessions from Central Anatolia region, composed of seventy-four accessions and eight commercial cultivars from Turkey, and nine international reference cultivars, was analyzed using 45 SSR (Simple Sequence Repeats) markers to reveal the genetic diversity. SSR analysis identified 390 alleles for 91 accessions. The number of alleles per locus ranged from 3 to 19 alleles with a mean value of 9 alleles per locus. Genetic dissimilarity coefficients ranged from 0.03 to 0.68. The highest number of alleles was obtained from CUJRA212 locus (Na = 19). The values of polymorphism information content (PIC) ranged from 0.42 (JRHR222528) to 0.86 (CUJRA212) with a mean PIC value of 0.68. Genetic distances were estimated according to the UPGMA (Unweighted Pair Group Method with Arithmetic Average), Principal Coordinates (PCoA), and the Structure-based clustering. The UPGMA and Structure clustering of the accessions depicted five major clusters supporting the PCoA results. The dendrogram revealed the similarities and dissimilarities among the accessions by identifying five major clusters. Based on this study, SSR analyses indicate that Yozgat province has an important genetic diversity pool and rich genetic variance of walnuts.

Taxonomic revision of species of Haematoloechus Looss, 1899 (Digenea: Plagiorchioidea), with molecular phylogenetic analysis and the description of three new species from Mexico

Zootaxa ◽  
2018 ◽  
Vol 4526 (3) ◽  
pp. 251 ◽  
Author(s):  
VIRGINIA LEÓN-RÈGAGNON ◽  
JANET TOPAN
Keyword(s):  
New Species ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Nomen Nudum ◽  
Phylogenetic Hypothesis ◽  
Molecular Phylogenetic ◽  
Phylogenetic Hypotheses ◽  
Three New Species ◽  
Host Parasite ◽  
Species Inquirendae

Lung flukes of the genus Haematoloechus Looss, 1899 are common parasites of anurans worldwide, but the taxonomy of the group has been confusing. In this taxonomic revision, 89 species of Haematoloechus (= Pneumonoeces Looss, 1902, Ostioloides Odening, 1960, Ostiolum Pratt, 1903, Skrjabinoeces Sudarikov, 1950, Neohaematoloechus Odening, 1960, Metahaematoloechus Yamaguti, 1971) are listed. Of these, 70 are considered valid, three are species inquirendae (H. legrandi Mañé–Garzón & Gil, 1959, H. latoricensis Kozák, 1968 & H. vitelloconfluentum (Rai, 1962) Saeed, Al–Barwari & Al-Harmni, 2007), one is a nomen nudum H. sudarikovi Belouss, 1962, 14 are junior synonyms and one belongs to Ostioloides. This publication also describes three new species, H. occidentalis n. sp., H. veracruzanus n. sp. and H. mexicanus n. sp., parasitizing species of Rana Linnaeus in Mexico and redescribes Haematoloechus caballeroi (Skrjabin & Antipin, 1962) Yamaguti, 1971. The phylogenetic hypotheses based on sequences of mitochondrial and ribosomal DNA of Haematoloechus spp. show that genera proposed on the basis of morphological characters are not supported. The host records for species of Haematoloechus, together with the phylogenetic hypothesis of the genus, suggest that this host-parasite association predates the ranid diversification in the Cretaceous. 

Molecular insights into the phylogenetic placement of the poorly known genus Niceforonia Goin & Cochran, 1963 (Anura: Brachycephaloidea)

Zootaxa ◽  
2018 ◽  
Vol 4514 (4) ◽  
pp. 487
Author(s):  
ANDRÉS R. ACOSTA-GALVIS ◽  
JEFFREY W. STREICHER ◽  
LUIGI MANUELLI ◽  
TRAVIS CUDDY ◽  
RAFAEL O. DE SÁ
Keyword(s):  
Phylogenetic Analysis ◽  
New World ◽  
Taxonomic Revision ◽  
Phylogenetic Inference ◽  
Genetic Distances ◽  
Molecular Phylogenetic Analysis ◽  
Phylogenetic Placement ◽  
Molecular Phylogenetic ◽  
First Time

Among New World direct-developing frogs belonging to the clade Brachycephaloidea (= Terraranae), there are several genera with uncertain phylogenetic placements. One notable example is the genus Niceforonia Goin & Cochran 1963, which includes three species that are endemic to Colombia. Three specimens of the species Niceforonia nana were collected and for the first time the genus is included in a molecular phylogenetic analysis of mitochondrial (mtDNA; 12S and 16S) and nuclear (nucDNA; TYR and RAG1) markers. Molecular phylogenetic inference based on concatenated and separate mtDNA and nucDNA analyses recovered Niceforonia nana nested within Hypodactylus Hedges et al. 2008, rendering the latter genus paraphyletic. Consequently, herein we place the genus Hypodactylus in the synonymy of Niceforonia to resolve the paraphyly and place Niceforonia in the subfamily Hypodactylinae. Based on our revised concept of the genus Niceforonia we conducted preliminary morphological comparisons using specimens and literature descriptions. Finally, Nicefornia nana is quite divergent from other species of Niceforonia (uncorrected genetic distances of ca. 10% 16S and 7% TYR) suggesting that further taxonomic revision may be warranted. 

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