Open Access. Powered by Scholars. Published by Universities.®

Botany Commons

Open Access. Powered by Scholars. Published by Universities.®

2010

Discipline
Institution
Keyword
Publication
Publication Type

Articles 121 - 150 of 210

Full-Text Articles in Botany

A Survey Of The Vascular Flora Of Beaufort County, South Carolina, Daniel Payne Jan 2010

A Survey Of The Vascular Flora Of Beaufort County, South Carolina, Daniel Payne

All Theses

Beaufort County has historically been one of the most poorly botanized counties in the state. Geographically, it lies farther from the major research institutions than most other counties and has therefore received little attention from modern botanists. Major waterways, numerous private communities and an oppressive summer climate further complicate botanical research. Beaufort has one of the fastest growing human populations in the state. Natural areas are rapidly being converted into residential and commercial developments. An understanding of the county's flora is necessary to focus conservation efforts to preserve critical habitat and develop management plans for maintaining biodiversity. This project was …


An Integrative Approach To Genomic Introgression Mapping, Andrew J. Severin, Gregory A. Peiffer, Wayne W. Xu, D. L. Hyten, Bruna Bucciarelli, Jamie A. O'Rourke, Yung-Tsi Bolon, David Grant, Andrew Farmer, Gregory D. May, Carroll P. Vance, Randy C. Shoemaker, Robert M. Stupar Jan 2010

An Integrative Approach To Genomic Introgression Mapping, Andrew J. Severin, Gregory A. Peiffer, Wayne W. Xu, D. L. Hyten, Bruna Bucciarelli, Jamie A. O'Rourke, Yung-Tsi Bolon, David Grant, Andrew Farmer, Gregory D. May, Carroll P. Vance, Randy C. Shoemaker, Robert M. Stupar

Department of Agronomy and Horticulture: Faculty Publications

Near-isogenic lines (NILs) are valuable genetic resources for many crop species, including soybean (Glycine max). The development of new molecular platforms promises to accelerate the mapping of genetic introgressions in these materials. Here, we compare some existing and emerging methodologies for genetic introgression mapping: single-feature polymorphism analysis, Illumina GoldenGate single nucleotide polymorphism (SNP) genotyping, and de novo SNP discovery via RNA-Seq analysis of next-generation sequence data. We used these methods to map the introgressed regions in an iron-inefficient soybean NIL and found that the three mapping approaches are complementary when utilized in combination. The comparative RNA-Seq approach offers …


Soydb: A Knowledge Database Of Soybean Transcription Factors, Zheng Wang, Marc Libault, Trupti Joshi, Babu Valliyodan, Henry T. Nguyen, Dong Xu, Gary Stacey, Jianlin Cheng Jan 2010

Soydb: A Knowledge Database Of Soybean Transcription Factors, Zheng Wang, Marc Libault, Trupti Joshi, Babu Valliyodan, Henry T. Nguyen, Dong Xu, Gary Stacey, Jianlin Cheng

Department of Agronomy and Horticulture: Faculty Publications

Background: Transcription factors play the crucial rule of regulating gene expression and influence almost all biological processes. Systematically identifying and annotating transcription factors can greatly aid further understanding their functions and mechanisms. In this article, we present SoyDB, a user friendly database containing comprehensive knowledge of soybean transcription factors.

Description: The soybean genome was recently sequenced by the Department of Energy-Joint Genome Institute (DOE-JGI) and is publicly available. Mining of this sequence identified 5,671 soybean genes as putative transcription factors. These genes were comprehensively annotated as an aid to the soybean research community. We developed SoyDB - a knowledge database …


Transgenic Maize Lines With Cell-Type Specific Expression Of Fluorescent Proteins In Plastids, Amir Sattarzadeh, Jonathan Fuller, Salvador Moguel, Katia Wostrikoff, Shirley Sato, Sarah Covshoff, Tom Clemente, Maureen Hanson, David Stern Jan 2010

Transgenic Maize Lines With Cell-Type Specific Expression Of Fluorescent Proteins In Plastids, Amir Sattarzadeh, Jonathan Fuller, Salvador Moguel, Katia Wostrikoff, Shirley Sato, Sarah Covshoff, Tom Clemente, Maureen Hanson, David Stern

Department of Agronomy and Horticulture: Faculty Publications

Plastid number and morphology vary dramatically between cell types and at different developmental stages. Furthermore, in C4 plants such as maize, chloroplast ultrastructure and biochemical functions are specialized in mesophyll and bundle sheath cells, which differentiate acropetally from the proplastid form in the leaf base. To develop visible markers for maize plastids, we have created a series of stable transgenics expressing fluorescent proteins fused to either the maize ubiquitin promoter, the mesophyll-specific phosphoenolpyruvate carboxylase (PepC) promoter, or the bundle sheath-specific Rubisco small subunit 1 (RbcS) promoter. Multiple independent events were examined and revealed that maize codon-optimized versions of YFP and …


Contents, Discovery Editors Jan 2010

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.


Letter From The Dean, Michael Vayda Jan 2010

Letter From The Dean, Michael Vayda

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.


Instructions For Authors, Discovery Editors Jan 2010

Instructions For Authors, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.


Journals Of Travels, Stanley L. Welsh Jan 2010

Journals Of Travels, Stanley L. Welsh

Books by Faculty of the Monte L. Bean Life Science Museum

Abstract

It is unfortunate that journals were not kept routinely for all of my [Stanley L. Welsh] expeditions that resulted in collections of plants that formed the bases for publications over the years. Only the record books and the specimens document most of the trips, and they are without detail of the events leading up to them or of those that transpired on them. The journals reproduced here show good intentions, which unfortunately were not fulfilled subsequently. The early field trips from Iowa State, accompanied by Dennis Anderson set the tone for later trips to Alaska, in 1965, 1966, 1968, …


Structural And Functional Divergence Of A 1-Mb Duplicated Region In The Soybean (Glycine Max) Genome And Comparison To An Orthologous Region From Phaseolus Vulgaris, Jer-Young Lin, Robert M. Stupar, Christian Hans, D. L. Hyten, Scott A. Jackson Jan 2010

Structural And Functional Divergence Of A 1-Mb Duplicated Region In The Soybean (Glycine Max) Genome And Comparison To An Orthologous Region From Phaseolus Vulgaris, Jer-Young Lin, Robert M. Stupar, Christian Hans, D. L. Hyten, Scott A. Jackson

Department of Agronomy and Horticulture: Faculty Publications

Soybean (Glycine max) has undergone at least two rounds of polyploidization, resulting in a paleopolyploid genome that is a mosaic of homoeologous regions. To determine the structural and functional impact of these duplications, we sequenced two ~1-Mb homoeologous regions of soybean, Gm8 and Gm15, derived from the most recent ~13 million year duplication event and the orthologous region from common bean (Phaseolus vulgaris), Pv5. We observed inversions leading to major structural variation and a bias between the two chromosome segments as Gm15 experienced more gene movement (gene retention rate of 81% in Gm15 versus 91% in …


Elymus Sosnowskyi (Hackel) Melderis (Poaceae), A Rare Endemic Species In Turkey, Evren Cabi̇, Musa Doğan, Özlem Mavi̇, Ersi̇n Karabacak, Bi̇rol Başer Jan 2010

Elymus Sosnowskyi (Hackel) Melderis (Poaceae), A Rare Endemic Species In Turkey, Evren Cabi̇, Musa Doğan, Özlem Mavi̇, Ersi̇n Karabacak, Bi̇rol Başer

Turkish Journal of Botany

Elymus sosnowskyi, a rare endemic species known from East Anatolia, Turkey, was first collected by D. Sosnowsky in 1912. After that it has been collected only one other time, by F. Sorger in 1981. During the "Taxonomic revision of tribe Triticeae in Turkey" project, which was supported by TÜBİTAK, E. sosnowskyi was recollected from 3 populations in Oltu and Narman (A8 Erzurum, Turkey) in 2007 and 2008. The present study aimed to provide detailed diagnostic characters of this rare endemic species, including its morphological, anatomical, and palynological features. Moreover, the amended and expanded description, distribution, phenology, and ecology of this …


Anomodon Longifolius (Anomodontaceae, Bryopsida) New To The Bryophyte Flora Of Turkey, Muhammet Ören, Güray Uyar, Tamer Keçeli̇ Jan 2010

Anomodon Longifolius (Anomodontaceae, Bryopsida) New To The Bryophyte Flora Of Turkey, Muhammet Ören, Güray Uyar, Tamer Keçeli̇

Turkish Journal of Botany

Anomodon longifolius (Schleich. ex Brid.) Hartm. is reported for the first time from Turkey, bringing the total number of Anomodon species known from Turkey to 6. This record extends its distribution range to the Western Black Sea region of Turkey. The nearest localities to Turkey for this species are in Bulgaria, Greece, the Caucasus, and Iran. This submeridional species was collected from 3 different localities (in Bolu and Bartın provinces) in Turkey. A site description, illustrations, and diagnostic characters of the Turkish specimens are given, together with notes on its distribution and ecology.


Internal Transcribed Spacer (Its) Polymorphism In The Wild Primula (Primulaceae) Taxa Of Turkey, Mutlu Gültepe, Uğur Uzuner, Kami̇l Coşkunçelebi̇, Ali̇ Osman Beldüz, Sali̇h Terzi̇oğlu Jan 2010

Internal Transcribed Spacer (Its) Polymorphism In The Wild Primula (Primulaceae) Taxa Of Turkey, Mutlu Gültepe, Uğur Uzuner, Kami̇l Coşkunçelebi̇, Ali̇ Osman Beldüz, Sali̇h Terzi̇oğlu

Turkish Journal of Botany

Twenty-three populations belonging to 10 wild Primula L. (Primulaceae) taxa of Turkey, some of which are morphologically quite similar, were investigated based on nrDNA ITS regions. The plant materials were collected from different geographical areas of Anatolia in vegetation periods of 2005 and 2006. Total genomic DNAs were isolated from the healthy leaves of each population. The entire ITS regions of the populations were amplified by universal primers with the aid of a polymerase chain reaction (PCR), and then the PCR products were sequenced. Neighbour-Joining (NJ) and Maximum Parsimony (MP) trees were constructed in order to identify the relationships among …


Ovule Ontogenesis And Megagametophyte Development In Onobrychis Schahuensis Bornm. (Fabaceae), Abdolkarim Chehregani, Nayereh Tanomi Jan 2010

Ovule Ontogenesis And Megagametophyte Development In Onobrychis Schahuensis Bornm. (Fabaceae), Abdolkarim Chehregani, Nayereh Tanomi

Turkish Journal of Botany

The ovule ontogenesis and the megasporogenesis events in Onobrychis schahuensis Bornm. were studied with light microscopy. The primordium is tetra-zonate and gives rise to an anatropous ovule. The archesporium may consist of one or more archesporial cells, but only one of them undergoes meiosis, forming a linear shaped tetrad. Normally, only a single megaspore is functional, which is located in the chalazal position, while the others degenerate very soon. The young ovule is hemianatropous but the mature one is anatropous, crassinucellar, and bitegmic; integuments form a zig-zag micropyle. A 7-celled embryo-sac is formed corresponding to the Polygonum type. The present …


Macrofungi Of Hatila Valley National Park (Artvin, Turkey), Kenan Demi̇rel, Ömer Erdem, Yusuf Uzun, Abdullah Kaya Jan 2010

Macrofungi Of Hatila Valley National Park (Artvin, Turkey), Kenan Demi̇rel, Ömer Erdem, Yusuf Uzun, Abdullah Kaya

Turkish Journal of Botany

The taxonomic study of 382 samples collected from Hatila Valley National Park (Artvin, Turkey) revealed 126 taxa of macromycetes, belonging to 34 families and 60 genera. Two of them, Arrhenia acerosa (Fr.) Kühn. (Tricholomataceae) and Entoloma politum (Pers.: Fr.) Donk. (Entolomataceae), are new records for Turkey.


New Lichen Records From Georgia, Tzimi Inashvili, Ketevan Batsatsashvili Jan 2010

New Lichen Records From Georgia, Tzimi Inashvili, Ketevan Batsatsashvili

Turkish Journal of Botany

New records of the following 17 lichen taxa are reported from Georgia: Aspicilia esculenta (Pall.) Flagey, Caloplaca lobulata (Flörke) Hellb., Cladonia caespiticia (Pers.) Flörke, Hypogymnia farinacea Zopf, H. subduplicata (Rass.) Rass., Lecidella stigmatea (Ach.) Hertel & Leuckert, Leptorhaphis lucida Körb., Parmelia saxatilis (L.) Ach. var. divaricata Delise ex Nyl., Parmotrema arnoldii (Du Rietz) Hale, Phaeophyscia hirsuta Mereschk., Physcia biziana (A.Massal.) Zahlbr., Physconia detersa (Nyl.) Poelt, Ramalina obtusata (Arnold) Bitter, Squamarina gypsacea (Sm.) Poelt, Toninia sedifolia (Scop.) Timdal, Umbilicaria cylindrica (L.) Delise ex Duby var. tornata (Ach.) Nyl., and Xanthoparmelia tinctina (Maheu & A.Gillet) Hale. Four of the reported taxa were …


Reseda Globulosa (Resedaceae): A New Record For The Flora Of Turkey, Zeki̇ Aytaç, Hayri̇ Duman Jan 2010

Reseda Globulosa (Resedaceae): A New Record For The Flora Of Turkey, Zeki̇ Aytaç, Hayri̇ Duman

Turkish Journal of Botany

Reseda globulosa Fisch. & C.A.Mey. (Resedaceae) is reported as a new record for Turkish flora. It was identified using the collected specimens and Flora Palaestina. The description, illustration, and distribution of the species are given.


Morphological, Karyological And Phylogenetic Evaluation Of Cyclotrichium: A Piece In The Tribe Mentheae Puzzle, Tuncay Di̇rmenci̇, Ekrem Dündar, Görkem Deni̇z, Turan Arabaci, Esra Marti̇n, Zi̇ba Jamzad Jan 2010

Morphological, Karyological And Phylogenetic Evaluation Of Cyclotrichium: A Piece In The Tribe Mentheae Puzzle, Tuncay Di̇rmenci̇, Ekrem Dündar, Görkem Deni̇z, Turan Arabaci, Esra Marti̇n, Zi̇ba Jamzad

Turkish Journal of Botany

The genus Cyclotrichium, a member of the tribe Mentheae subtribe Menthinae (Lamiaceae, Nepetoideae), was analysed with respect to morphological revision, phylogenetic analysis, and cytogenetic properties. All species of the genus were investigated for morphological characters and ITS (internal transcribed spacers) of nrDNA sequence comparison (except C. hausknechtii for ITS). Six members of the genus were also analysed for chromosome numbers. The combined results strongly suggested that Cyclotrichium is a separate genus in Nepetoideae with distinct morphological, phylogenetic, and cytogenetic characteristics. For intrageneric phylogeny of Cyclotrichium, 3 groups were recognised: 1. C. niveum; 2. C. origanifolium; and 3. the remaining 6 …


Phylogenetic Relationships Of Some Turkish Crocus (Iridaceae) Taxa Based On Morphological And Anatomical Characters, Fati̇h Coşkun, Selami̇ Selvi̇, Fati̇h Satil Jan 2010

Phylogenetic Relationships Of Some Turkish Crocus (Iridaceae) Taxa Based On Morphological And Anatomical Characters, Fati̇h Coşkun, Selami̇ Selvi̇, Fati̇h Satil

Turkish Journal of Botany

In this study, relationships among the 15 taxa of the genus Crocus L. distributed in Turkey were analysed using 29 morphological and 4 anatomical characters. Analysis of the data set utilising maximum parsimony criterion with Branch-and-Bound search algorithm yielded 32 most parsimonious trees. Bootstrap analysis with the majority rule consensus algorithm generated a consensus tree supporting some branches. Our data mostly did not agree with the previous sectional and serial treatments. The most interesting result was the condition of Crocus pallasii, which was previously included in the section Crocus. C. pallasii showed a sister group relationship with C. cancellatus from …


Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 11 2010, Several Authors Jan 2010

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 11 2010, Several Authors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.


Don't Judge A Book By Its Cover: The Curious Case Of Wild Ginger Pollination, W. John Hayden Jan 2010

Don't Judge A Book By Its Cover: The Curious Case Of Wild Ginger Pollination, W. John Hayden

Biology Faculty Publications

What pollinates wild ginger? This seems like an easy question. The inconspicuous little flowers are held close to the forest floor, often completely hidden by a dense canopy of ginger leaves above. Flower color is rather drab, dominated by brown and maroon hues. Wind pollination seems completely unlikely and flowers pollinated by bees, butterflies, moths, or hummingbirds are always much more showy and accessible to these flying creatures. Flies, however, given their natural inclination to seek carrion as a food source for their babies (i.e. maggots), are often attracted to brown and maroon flowers. And because their actual quarry, animal …


Elizabeth Findley Shores Collection Of Roland M. Harper, Zach S. Henderson Library Special Collections Jan 2010

Elizabeth Findley Shores Collection Of Roland M. Harper, Zach S. Henderson Library Special Collections

Finding Aids

This collection consists of articles and letters-to-the-editor written by Roland M. Harper for publication in scholarly journals. Sometimes in typescript, his works focus on botany, conservation, and social conditions, primarily in the southeastern United States. Spanning 1906-1965, additional documents, photographs and audio visual materials pertaining to Roland M. Harper’s family history are included. The collection’s creator, Elizabeth Findley Shores, is the author of the biography On Harper's Trail: Roland McMillan Harper, Pioneering Botanist of the Southern Coastal Plain (2008).

Find this collection in the University Libraries' catalog.


In Vitro Cultures For Production Of Zerumbone And Mass Propagation In Zingiber Zerumbet Smith., Farah Diana Idris Jan 2010

In Vitro Cultures For Production Of Zerumbone And Mass Propagation In Zingiber Zerumbet Smith., Farah Diana Idris

Student Works (2010-2019)

Lempoyang (Zingiber zerumbet Smith.) is an important plant which has been propagated because of its medicinal values. Lempoyang is widely used as a folk medicine in Asian countries such as Malaysia, Indonesia, India and Taiwan. Zerumbone, a cyclic sesqueterpene found to be the major and main bioactive compound that gives great potential in medicinal purposes especially in the treatment of chronic diseases based on recent reports. Recently, it was found that zerumbone inhibited the growth of human leukemia cell line, HL-60 cell. Even though there are so many great values contain in the lempoyang but it is hard to obtain …


Sfa Gardens Newsletter, Winter 2010, Sfa Gardens, Stephen F. Austin State University Jan 2010

Sfa Gardens Newsletter, Winter 2010, Sfa Gardens, Stephen F. Austin State University

SFA Gardens Newsletters

No abstract provided.


Impact Of Soil Drought Stress On Photochemical Efficiency Of Photosystem Ii And Antioxidant Enzyme Activities Of Phaseolus Vulgaris Cultivars, Rabi̇ye Terzi̇, Aykut Sağlam, Ni̇hal Kutlu, Hati̇ce Nar, Asim Kadioğlu Jan 2010

Impact Of Soil Drought Stress On Photochemical Efficiency Of Photosystem Ii And Antioxidant Enzyme Activities Of Phaseolus Vulgaris Cultivars, Rabi̇ye Terzi̇, Aykut Sağlam, Ni̇hal Kutlu, Hati̇ce Nar, Asim Kadioğlu

Turkish Journal of Botany

Common bean (Phaseolus vulgaris L.) cultivars (cvs) (Göynük 98, Karacaşehir 90, Şehirali 90, ES 855, and Yunus 90) were subjected to drought stress in order to assess the levels of drought tolerance through the analysis of growth parameters, leaf water potential (\psi_{leaf}), stomatal conductance (g_s), chlorophyll (chl) content, and lipid peroxidation. Significant differences were recorded among cultivars in most traits. Yunus 90 was identified as the most tolerant, and Karacaşehir 90 was the most sensitive. Furthermore, the changes in antioxidant enzyme activities, H_2O_2 content, and Photosystem II were investigated under drought stress, where Antioxidant enzyme activities increased while H_2O_2 contents …


High Frequency Plant Production Via Shoot Organogenesis And Somatic Embryogenesis From Callus In Tylophora Indica, An Endangered Plant Species, Aastha Sahai, Anwar Shahzad, Mohammad Anis Jan 2010

High Frequency Plant Production Via Shoot Organogenesis And Somatic Embryogenesis From Callus In Tylophora Indica, An Endangered Plant Species, Aastha Sahai, Anwar Shahzad, Mohammad Anis

Turkish Journal of Botany

An efficient and reproducible protocol has been developed for the in vitro production of an endangered medicinal climber Tylophora indica (Burm.f.) Merr. via leaf explants. Different types of calli produced on benzyladenine (BA) and thidiazuron (TDZ) supplemented Murashige and Skoog (MS) basal medium were selected for shoot induction and somatic embryogenesis studies. Calli when transferred from BA (5 µM) and TDZ (2.5 µM) to MS medium containing BA (5 µM) resulted in high frequency shoot induction (26.8 ± 0.97 shoots/culture) along with somatic embryogenesis (10.20 ± 0.37 embryoids/culture) up to 3 subculture passages. Embryoids transformed into complete plantlets when transferred …


Enhanced Adventitious Shoot Regeneration From Aerial Stem Explants Of Ginger Using Tdz And Its Histological Studies, Adinkudikuyyal Lincy, Bhaskaran Sasikumar Jan 2010

Enhanced Adventitious Shoot Regeneration From Aerial Stem Explants Of Ginger Using Tdz And Its Histological Studies, Adinkudikuyyal Lincy, Bhaskaran Sasikumar

Turkish Journal of Botany

A protocol for direct plantlet regeneration from aerial stem explants of ginger (Zingiber officinale Rosc.) has been developed. Adventitious shoots and roots were regenerated from in planta aerial stem explants of 2 ginger varieties viz. var. 'Jamaica' and var. 'Varada'. Maximum shoot and root regeneration were observed in the cultures containing TDZ and IBA (1:1; 1:0.1 mg L-1) in both varieties. Cultures containing TDZ alone showed poor shoot and root formation. Histological studies revealed that the shoot initials originated from the primary thickening meristem and apical meristem, while the root primordial originated from the primary thickening meristem present in the …


The Genotoxic Potential Of Two Heavy Metals In Inbred Lines Of Maize (Zea Mays L.), Girjesh Kumar, Prashant Kumar Rai Jan 2010

The Genotoxic Potential Of Two Heavy Metals In Inbred Lines Of Maize (Zea Mays L.), Girjesh Kumar, Prashant Kumar Rai

Turkish Journal of Botany

The genotoxic effects of 2 heavy metals (mercury chloride and cadmium chloride) on the gametic cells of 6 inbred lines of maize were tested in terms of cytological abnormalities. Meiosis was normal under control conditions. During the treatments with mercury and cadmium there was a concentration-dependent increase in meiotic abnormalities in all the inbred lines. A wide spectrum of chromosomal aberrations in the treated sets was stickiness, followed by laggards, bridges, scattering, precocious movement, fragments, etc. Maximum chromosomal anomalies were observed in inbred line CM-142 in both the treatment sets of heavy metals. Compared to CdCl_2, HgCl_2 induced more chromosomal …


A New Record For The Flora Of Turkey: Scorzonera Ketzkhovelii Grossh. (Asteraceae), Ergi̇n Hamzaoğlu, Ahmet Aksoy, Esra Marti̇n, Münevver Pinar, Hati̇ce Çölgeçen Jan 2010

A New Record For The Flora Of Turkey: Scorzonera Ketzkhovelii Grossh. (Asteraceae), Ergi̇n Hamzaoğlu, Ahmet Aksoy, Esra Marti̇n, Münevver Pinar, Hati̇ce Çölgeçen

Turkish Journal of Botany

Scorzonera ketzkhovelii Grossh. (Asteraceae) was recently collected from Yusufeli, Artvin (north-east Anatolia) and it has been reported as a new species record for the flora of Turkey. It is described and illustrated. In addition, its karyological features and pollen morphology are given.


Using Vegetation Units As Salinity Predictors In The Lower Cheliff Algeria, Adda Ababou, Mohammed Chouieb, Mohammed Khader, Khalladi Mederbal, Djamel Saidi Jan 2010

Using Vegetation Units As Salinity Predictors In The Lower Cheliff Algeria, Adda Ababou, Mohammed Chouieb, Mohammed Khader, Khalladi Mederbal, Djamel Saidi

Turkish Journal of Botany

The Lower Cheliff plain is among the largest salted soils in north-western Algeria. In order to establish the relationships between the main soil factors and plant species in this stressed ecosystem, 133 relevés related to soil and vegetation were realized. Soil variables measured included electrical conductivity and calcium carbonate. The 133 relevés were arranged in clusters using k-means classification. The similarity analysis used to examine the variation in vegetation assemblage structure showed significant differences in taxonomical composition among groups of relevés. The phi coefficient of fidelity used then to extract the different vegetation units and to measure species concentration in …


A New Subspecies Of Stachys Cretica (Section Eriostomum, Lamiaceae) From Turkey, Ekrem Akçi̇çek Jan 2010

A New Subspecies Of Stachys Cretica (Section Eriostomum, Lamiaceae) From Turkey, Ekrem Akçi̇çek

Turkish Journal of Botany

Stachys cretica L. subsp. kutahyensis Akçiçek subsp. nova is described as a new subspecies from West Anatolia, Turkey. It is related to Stachys cretica L. subsp. vacillans Rech. f. and Stachys cretica L. subsp. anatolica Rech. f., from which it differs in stem, leaf, and flower characters. Diagnostic characters, description, detailed illustrations, and taxonomic comments of the new subspecies are given. The geographical distribution of the subspecies is mapped. IUCN threat category and observations on the population are noted.