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Articles 5011 - 5040 of 10756

Full-Text Articles in Botany

Mutations In Arabidopsis Yellow Stripe-Like1 And Yellow Stripe-Like3 Reveal Their Roles In Metal Ion Homeostasis And Loading Of Metal Ions In Seeds, Brian M. Waters, Heng-Hsuan Chu, Raymond J. Didonato, Louis A. Roberts, Robynn B. Eisley, Brett Lahner, David E. Salt, Elsbeth L. Walker Jan 2006

Mutations In Arabidopsis Yellow Stripe-Like1 And Yellow Stripe-Like3 Reveal Their Roles In Metal Ion Homeostasis And Loading Of Metal Ions In Seeds, Brian M. Waters, Heng-Hsuan Chu, Raymond J. Didonato, Louis A. Roberts, Robynn B. Eisley, Brett Lahner, David E. Salt, Elsbeth L. Walker

Department of Agronomy and Horticulture: Faculty Publications

Here, we describe two members of the Arabidopsis (Arabidopsis thaliana) Yellow Stripe-Like (YSL) family, AtYSL1 and AtYSL3. The YSL1 and YSL3 proteins are members of the oligopeptide transporter family and are predicted to be integral membrane proteins. YSL1 and YSL3 are similar to the maize (Zea mays) YS1 phytosiderophore transporter (ZmYS1) and the AtYSL2 iron (Fe)-nicotianamine transporter, and are predicted to transport metal-nicotianamine complexes into cells. YSL1 and YSL3 mRNAs are expressed in both root and shoot tissues, and both are regulated in response to the Fe status of the plant. β-Glucuronidase reporter expression, driven by …

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Vascular Flora Of The South Fork Native Plant Reserve, Van Buren County, Arkansas, Theo Witsell, Brent Baker Jan 2006

Vascular Flora Of The South Fork Native Plant Reserve, Van Buren County, Arkansas, Theo Witsell, Brent Baker

Journal of the Arkansas Academy of Science

The South Fork Native Plant Preserve, a property owned and managed by the Gates Rogers Foundation, Inc., is located along the South Fork of the Little Red River (now Greers Ferry Lake) in Van Buren County, Arkansas. We conducted a floristic inventor/ of a 61.3 ha study area consisting of the preserve, adjacent lakefront property owned by the U.S. Army Corps of Engineers, and a riparian corridor on neighboring land from February through November 2005. A total of 582 vascular plant taxa, representing 118 families and 336 genera, was documented including six species (Carex lupuliformis Sartwell ex L.H.Dewey, Carex swanii …

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Teucrium Chasmophyticum Rech. F. (Lamiaceae): A New Record For The Flora Of Turkey, Ali̇ Arslan Dönmez Jan 2006

Teucrium Chasmophyticum Rech. F. (Lamiaceae): A New Record For The Flora Of Turkey, Ali̇ Arslan Dönmez

Turkish Journal of Botany

An interesting chasmophytic Teucrium specimen was collected from Siirt, SE Turkey. It was identified according to the Flora of Turkey as T. paederotoides but with some doubt about certain characters. It was identified as T. chasmophyticum without any doubt from Flora Iranica. Because of some indistinct points between these 2 taxa, the recently described taxon was re-evaluated. The type specimen of the taxon was examined at W herbarium and its revised description is given here. A photograph of the type specimen and the Turkish material taken from the field is supplied along with a map.

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Net Planktonic Diatom (Bacillariophyceae) Composition Of Lake Abant (Bolu), Abuzer Çelekli̇, Okan Külköylüoğlu Jan 2006

Net Planktonic Diatom (Bacillariophyceae) Composition Of Lake Abant (Bolu), Abuzer Çelekli̇, Okan Külköylüoğlu

Turkish Journal of Botany

The diatom flora of Lake Abant was studied monthly for 2 years (June 2003-June 2005) from 3 littoral and 2 vertical stations. A total of 123 diatom taxa were identified. Some species (Asterionella formosa Hassall, Cymbella silesiaca Bleisch, C. cistula Kirchner, Fragilaria biceps (Kützing) Lange-Bertalot, F. dilata (Brebisson) Lange-Bertalot, Navicula radiosa Kützing, and Rhopalodia gibba Müller) showed frequent occurrence in each month at all stations. Numbers of diatoms were increased in certain months in autumn, i.e. November (83 taxa) and December (68 taxa) 2003, and August (65 taxa) and September (76 taxa) 2004.

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Development Of An In Vitro Regeneration System In Sorghum [Sorghum Bicolor (L.) Moench] Using Root Transverse Thin Cell Layers (Ttcls), P. Baskaran, B. Raja Rajeswari, N. Jayabalan Jan 2006

Development Of An In Vitro Regeneration System In Sorghum [Sorghum Bicolor (L.) Moench] Using Root Transverse Thin Cell Layers (Ttcls), P. Baskaran, B. Raja Rajeswari, N. Jayabalan

Turkish Journal of Botany

An efficient and reproducible plant regeneration system was developed from cells or tissues of agronomically important Indian sorghum genotypes including 2 commercial cultivars (NSH27 & K8) of Sorghum bicolor (L.) Moench. Callus induction and plant regeneration were achieved on transverse thin cell layers (tTCL) of roots from aseptically germinated 7-day-old seedlings. Callus response depended on the genotype, the concentrations and composition of growth substances and number of in vitro regeneration cycles undergone by the donor plant. Murashige and Skoog (MS) medium supplemented with 4.5-18.1 µM 2,4-dichlorophenoxy acetic acid (2,4-D), 5.4-21.5 µM naphthalene acetic acid (NAA), 5.7-22.8 µM indole acetic acid …

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Chinese Flame Tree (Koelreuteria Bipinnata Franch.) (Sapindaceae) New To The Arkansas Flora, Brett Serviss, Nicole Freeman, Sara Melancen Jan 2006

Chinese Flame Tree (Koelreuteria Bipinnata Franch.) (Sapindaceae) New To The Arkansas Flora, Brett Serviss, Nicole Freeman, Sara Melancen

Journal of the Arkansas Academy of Science

No abstract provided.

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Pollen Wall Ultrastructure Of Araceae And Lemnaceae In Relation To Molecular Classifications, Michael Hesse Jan 2006

Pollen Wall Ultrastructure Of Araceae And Lemnaceae In Relation To Molecular Classifications, Michael Hesse

Aliso: A Journal of Systematic and Floristic Botany

A comparative ultrastructural study of Araceae pollen walls was conducted for the first time. The results are based mainly on investigations by transmission electron microscopy of 101 species in 70 genera (out of a total of 105 genera), while pollen of 83 genera with 219 species were studied by scanning electron microscopy, generally without acetolysis. Special attention was given to Lemnaceae (including Limnobiophyllum) considered to be closely related to Araceae (especially to Pistia). The ultrastructural pollen wall characters are mostly in accordance with and strongly support the morphological classifications and the arrangement of genera within recent molecular trees. …

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A Reappraisal Of Phylogentic Relationships In The Monocotyledon Family Hydrocharitaceae (Alismatidae), Donald H. Les, Michael L. Moody, Connie L. Soros Jan 2006

A Reappraisal Of Phylogentic Relationships In The Monocotyledon Family Hydrocharitaceae (Alismatidae), Donald H. Les, Michael L. Moody, Connie L. Soros

Aliso: A Journal of Systematic and Floristic Botany

The diverse, aquatic Hydrocharitaceae have defied stable classification for nearly two centuries. Anatomical and morphological convergence characterize many aquatic plants and undoubtedly have hindered the ability of researchers to ascertain accurately those features representing reliable phylogenetic markers within Hydrocharitaceae. Most prior classifications of the family have emphasized few characters to define major taxonomic subdivisions (i.e., they were highly artificial). Previous studies using molecular data have shown that DNA sequences provide novel indications of phylogeny not indicated previously by morphologically based classifications; however, they have not yet recommended alterations to the classification for the family. We conducted a more comprehensive phylogenetic …

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Stem Anatomy Of Climbing Palms In Relation To Long-Distance Water Transport, P. Barry Tomlinson Jan 2006

Stem Anatomy Of Climbing Palms In Relation To Long-Distance Water Transport, P. Barry Tomlinson

Aliso: A Journal of Systematic and Floristic Botany

Palms lack secondary growth so their primary vascular system is long-lived and must be minimally vulnerable to dysfunction. For water movement, the axial xylem must be well defended against cavitation. Climbing palms can be very long and represent a maximum solution to transport problems. How is this demonstrated in their anatomy? This article contrasts stem vascular anatomy in a canelike "tree palm" (Rhapis excelsa) with that in the American climbing palm Desmoncus and the Old World rattan genus Calamus. Rhapis, representing the basic classical palm vasculature, has a continuously integrated vascular system determined by branching of the axial …

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The Evolutionary And Biogeographic Origin And Diversification Of The Tropical Monocot Order Zingiberales, W. John Kress, Chelsea D. Specht Jan 2006

The Evolutionary And Biogeographic Origin And Diversification Of The Tropical Monocot Order Zingiberales, W. John Kress, Chelsea D. Specht

Aliso: A Journal of Systematic and Floristic Botany

Zingiberales are a primarily tropical lineage of monocots. The current pantropical distribution of the order suggests an historical Gondwanan distribution, however the evolutionary history of the group has never been analyzed in a temporal context to test if the order is old enough to attribute its current distribution to vicariance mediated by the break-up of the supercontinent. Based on a phylogeny derived from morphological and molecular characters, we develop a hypothesis for the spatial and temporal evolution of Zingiberales using Dispersal-Vicariance Analysis (DIVA) combined with a local molecular clock technique that enables the simultaneous analysis of multiple gene loci with …

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Pineywoods Native Plant Center, Winter 2006, Sfa Gardens, Stephen F. Austin State University Jan 2006

Pineywoods Native Plant Center, Winter 2006, Sfa Gardens, Stephen F. Austin State University

SFA Gardens Newsletters

No abstract provided.

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The Morphology And Anatomy Of Crocus Flavus Weston Subsp. Flavus (Iridaceae), Canan Özdemi̇r, Peli̇n Baran, Yurdanur Akyol Jan 2006

The Morphology And Anatomy Of Crocus Flavus Weston Subsp. Flavus (Iridaceae), Canan Özdemi̇r, Peli̇n Baran, Yurdanur Akyol

Turkish Journal of Botany

The morphological and anatomical characteristics of Crocus flavus Weston subsp. flavus (Iridaceae) were investigated. Cross-sections of the root, stem, corm and leaf parts of C. flavus subsp. flavus were examined and cross-sections of the root, stem and leaf demonstrated by illustrations. The corm-tunic is membranous, splitting into vertical fibres and lacking distinct horizontal rings at the base. The style is obscurely trilobed or slightly divided. These features are characteristic of C. flavus subsp. flavus. Differences such as shape of leaf keel and branching of style were determined by comparing the results obtained from this subspecies with the results obtained from …

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Chromosome Numbers Of 16 Endemic Plant Taxa From Northern Cyprus, Kemal Yildiz, Sali̇h Gücel Jan 2006

Chromosome Numbers Of 16 Endemic Plant Taxa From Northern Cyprus, Kemal Yildiz, Sali̇h Gücel

Turkish Journal of Botany

The chromosome numbers of 16 of the 19 endemic taxa of Northern Cyprus were investigated, 15 of which are new records. Diploid chromosome numbers of the taxa investigated varied between 2n = 12 and 2n = 30. One species, Scutellaria sibthorpii (Benth.) Hal., was both diploid (2n = 14) and tetraploid (2n = 28), and Sideritis cypria Post, 2n = 30, was either diploid or triploid.

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Folk Medicines In Merzifon (Amasya, Turkey), Nurten Ezer, Öykü Mumcu Arisan Jan 2006

Folk Medicines In Merzifon (Amasya, Turkey), Nurten Ezer, Öykü Mumcu Arisan

Turkish Journal of Botany

Natural sources used as folk medicines in Merzifon were investigated in this study. It was determined that 35 plant and 4 animal species together with 3 animal and 1 inorganic sources are being used as various preparations of folk medicines in Merzifon area. All the collected medicinal plants were identified and voucher specimens were deposited in the Herbarium of Hacettepe University, Faculty of Pharmacy (HUEF). Local names, part(s) used, methods of preparation and traditional usages of folk medicines are given in this paper. Traditional herbal medicines were mostly used for gastrointestinal system diseases, heart and circulatory system disorders. When our …

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Alleviation Of Salinity-Induced Dormancy By Growth Regulators In Wheat Seeds, Zamin Shaheed Siddiqui, Syed Shahid Shaukat, Arif Uz Zaman Jan 2006

Alleviation Of Salinity-Induced Dormancy By Growth Regulators In Wheat Seeds, Zamin Shaheed Siddiqui, Syed Shahid Shaukat, Arif Uz Zaman

Turkish Journal of Botany

The effect of 2 growth regulators, betaine and thiourea, was examined to learn the extent to which they can alleviate salinity-induced dormancy of wheat seeds. Germination velocity (as measured by Timson index) progressively decreased with increasing salinity, while thiourea and betaine, alone or in combination, elevated the germination velocity of wheat seeds. Timson index showed significant improvement in germination velocity when thiourea was used at 225 mM NaCl. Likewise, the adverse effect of salinity on growth parameters, like root and shoot lengths and fresh and dry weights, was also alleviated considerably when growth regulators were added. The application of growth …

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Isolation Of Dna For Sequence Analysis From Herbarium Material Of Some Lichen Specimens, Sümer Aras, Demet Cansaran Duman Jan 2006

Isolation Of Dna For Sequence Analysis From Herbarium Material Of Some Lichen Specimens, Sümer Aras, Demet Cansaran Duman

Turkish Journal of Botany

An improved protocol for the isolation of DNA from herbarium material of some lichen specimens is described. The isolated DNA is suitable for PCR reactions for DNA sequence analysis. The hexadecyltrimethylammonium bromide (CTAB) based protocol defined in this study provides a number of advantages, mainly speed and reliability. In addition, different DNA extraction protocols were examined to determine the yield of DNA from the thallus of lichen specimens. The methods examined include a CTAB based protocol and a sodium dodecyl sulphate (SDS) based protocol. Although these procedures yielded DNA of suitable purity for PCR analysis, the improved protocol yielded DNA …

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On The Circumscription Of Isatis Tinctoria L. (Brassicaceae) In Iran, Hamid Moazzeni, Shahin Zarre Jan 2006

On The Circumscription Of Isatis Tinctoria L. (Brassicaceae) In Iran, Hamid Moazzeni, Shahin Zarre

Turkish Journal of Botany

In the course of preparing a revision of Isatis L. and its allies in Iran, we verified Isatis tinctoria L. among the material studied. Although it has been previously recorded for Iran, we give a more extensive description and a map of its distribution in Iran. A key to distinguishing this species from its allies and a discussion of the affinities in this group are provided.

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Presence Of Cirsium Eriophorum (L.) Scop. (Asteraceae) In Turkey, Ruzi̇ye Daşkin, Özer Yilmaz, Gönül Kaynak Jan 2006

Presence Of Cirsium Eriophorum (L.) Scop. (Asteraceae) In Turkey, Ruzi̇ye Daşkin, Özer Yilmaz, Gönül Kaynak

Turkish Journal of Botany

Specimens of Cirsium eriophorum (L.) Scop. were collected from A2 (A) Bursa, Uludağ. This study confirms the presence of this species, which is given as a doubtful record in the flora of Turkey. A description, photographs, an illustration of the median phyllaries and a distribution map of the species are also given.

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Sfa Gardens Newsletter, Jan 2006, Sfa Gardens, Stephen F. Austin State University Jan 2006

Sfa Gardens Newsletter, Jan 2006, Sfa Gardens, Stephen F. Austin State University

SFA Gardens Newsletters

No abstract provided.

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Soybean Cultivars Resulted From More Recombination Events Than Unselected Lines In The Same Population, T. R. Stefaniak, D. L. Hyten Jr., V. R. Pantalone, A. Klarer, T. W. Pfeiffer Jan 2006

Soybean Cultivars Resulted From More Recombination Events Than Unselected Lines In The Same Population, T. R. Stefaniak, D. L. Hyten Jr., V. R. Pantalone, A. Klarer, T. W. Pfeiffer

Department of Agronomy and Horticulture: Faculty Publications

The selection of superior adapted cultivars has contributed to the doubling of soybean [Glycine max (L.) Merr.] yields in the USA since 1930. Genetic variation was required for this selection to be effective. The objective of this study was to evaluate the importance of homologous chromosome meiotic recombination in the creation of soybean cultivars. A set of 10 adapted high-yielding cultivars selected from the cross ‘Williams’ × ‘Essex’ was com-pared with a set of 156 random recombinant inbred lines (RILs) from the same population. Crossover events were identified using 143 simple sequence repeat (SSR) markers span-ning all 20 soybean …

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Impacts Of Genetic Bottlenecks On Soybean Genome Diversity, D. L. Hyten, Qijian Song, Youlin Zhu, Ik-Young Choi, Randall L. Nelson, Jose M. Costa, James E. Specht, Randy C. Shoemaker, Perry B. Cregan Jan 2006

Impacts Of Genetic Bottlenecks On Soybean Genome Diversity, D. L. Hyten, Qijian Song, Youlin Zhu, Ik-Young Choi, Randall L. Nelson, Jose M. Costa, James E. Specht, Randy C. Shoemaker, Perry B. Cregan

Department of Agronomy and Horticulture: Faculty Publications

Soybean has undergone several genetic bottlenecks. These include domestication in Asia to produce numerous Asian landraces, introduction of relatively few landraces to North America, and then selective breeding over the past 75 years. It is presumed that these three human-mediated events have reduced genetic diversity. We sequenced 111 fragments from 102 genes in four soybean populations representing the populations before and after genetic bottlenecks. We show that soybean has lost many rare sequence variants and has undergone numerous allele frequency changes throughout its history. Although soybean genetic diversity has been eroded by human selection after domestication, it is notable that …

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Ethylene Could Influence Ferric Reductase, Iron Transporter, And H+-Atpase Gene Expression By Affecting Fer (Or Fer-Like) Gene Activity, Carlos Lucera, Brian M. Waters, Francisco Javier Romera, María José García, María Morales, Esteban Alcántara, Rafael Pérez-Vicente Jan 2006

Ethylene Could Influence Ferric Reductase, Iron Transporter, And H+-Atpase Gene Expression By Affecting Fer (Or Fer-Like) Gene Activity, Carlos Lucera, Brian M. Waters, Francisco Javier Romera, María José García, María Morales, Esteban Alcántara, Rafael Pérez-Vicente

Department of Agronomy and Horticulture: Faculty Publications

In previous works, it has been shown, by using ethylene inhibitors and precursors, that ethylene could participate in the regulation of the enhanced ferric reductase activity of Fe-deficient Strategy I plants. However, it was not known whether ethylene regulates the ferric reductase gene expression or other aspects related to this activity. This paper is a study of the effects of ethylene inhibitors and precursors on the expression of the genes encoding the ferric reductases and iron transporters of Arabidopsis thaliana (FRO2 and IRT1) and Lycopersicon esculentum (= Solanum lycopersicum) (FRO1 and IRT1) plants. The effects …

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2006 Wildflower Of The Year: Spicebush, Lindera Benzoin, W. John Hayden Jan 2006

2006 Wildflower Of The Year: Spicebush, Lindera Benzoin, W. John Hayden

Biology Faculty Publications

Spicebush is a multistemmed deciduous shrub that grows to a height of one to three meters. Young stems are delicate and may be smooth or finely hairy. Leaves are alternate and simple, with an elliptic to obovate blade that tapers at both the base and apex and is bounded by a smooth margin. Examined closely, the margin will reveal a series of fine hairs that project directly out from the leaf edge. In size, leaves are neither remarkably large nor small; they range from one to six inches in length and up to about two and a half inches wide, …

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Canopy-Tree Influences Along A Soil Parent Material Gradient In Pinus-Ponderosa-Quercus Gambelii Forests, Northern Arizona, Scott R. Abella, Judith D. Springer Jan 2006

Canopy-Tree Influences Along A Soil Parent Material Gradient In Pinus-Ponderosa-Quercus Gambelii Forests, Northern Arizona, Scott R. Abella, Judith D. Springer

Public Policy and Leadership Faculty Research

ABELLA, S. R. (Public Lands Institute and School of Life Sciences, University of Nevada, Las Vegas, Las Vegas, NV 89154-2040) AND J. D. SPRINGER (Ecological Restoration Institute, Northern Arizona University, Flagstaff, AZ 86011-5017). Canopy-tree influences along a soil parent material gradient in Pinus ponderosa- Quercus gambelii forests, northern Arizona. J. Torrey Bot. Soc. 135: 26–36. 2008.—The distribution of canopy trees can impose within-site patterns of soil properties and understory plant composition. At ten sites spanning a soil parent material gradient in northern Arizona Pinus ponderosa-Quercus gambelii forests, we compared soils and plant composition among five canopy types: openings, Pinus ponderosa …

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On The Taxonomy Of Plantaginaceae Juss. Sensu Lato: Evidence From Sem Of The Seed Coat, Azza Ahmed Shehata, Mohamed Hesham A. Loutfy Jan 2006

On The Taxonomy Of Plantaginaceae Juss. Sensu Lato: Evidence From Sem Of The Seed Coat, Azza Ahmed Shehata, Mohamed Hesham A. Loutfy

Turkish Journal of Botany

SEM of the seed coat was studied in 41 taxa of the Plantaginaceae sensu lato. The study included 31 taxa of Plantago L. and 10 taxa that were formerly assigned to the Scrophulariaceae, representing the genera Antirrhinum L., Digitalis L., Linaria Mill. and Veronica L. The obtained data were analysed by the NT sys-PC program package using the UPGMA clustering method. The study showed that Veronica possessed certain affinities to Plantago species, thus giving extra support to earlier views that Plantaginaceae sensu stricto and Scrophulariaceae sensu lato are allied through Veronica. The study also favoured the paraphyly of Plantago subgenus …

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The Moss Flora (Musci) Of The Sündiken Mountains, Fi̇li̇z Savaroğlu, Süleyman Tokur Jan 2006

The Moss Flora (Musci) Of The Sündiken Mountains, Fi̇li̇z Savaroğlu, Süleyman Tokur

Turkish Journal of Botany

In this study carried out in the Sündiken Mountains, 83 taxa were identified by the authors. These belong to 21 families and 42 genera of bryophytes. Of these, 64 taxa are new for the B7 grid-square adopted by Henderson.

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Microfungi Identified From The Flora Of Ordu Province In Turkey, Şanli Kabaktepe, Zeli̇ha Bahçeci̇oğlu Jan 2006

Microfungi Identified From The Flora Of Ordu Province In Turkey, Şanli Kabaktepe, Zeli̇ha Bahçeci̇oğlu

Turkish Journal of Botany

In this study, 101 species of microfungi and their hosts, which were found in Ordu Province are described. The research was carried out between 2002 and 2004. Approximately 1465 vascular plant specimens, plants infected with microfungi or not, were collected from the area. At the end of the study of the host plants, 35 families, 114 genera, and 138 host plant species (151 taxa) were established. The 101 species of microfungi were observed on the collected host specimens. These species belong to 23 genera and 13 families; 24 species belong to Ascomycota, 73 to Basidiomycota, and 4 to Mitosporic Fungi …

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Macrofungi Of Bekilli (Denizli) District, Saci̇t Köse, Kudret Gezer, İsa Gökler, Azi̇z Türkoğlu Jan 2006

Macrofungi Of Bekilli (Denizli) District, Saci̇t Köse, Kudret Gezer, İsa Gökler, Azi̇z Türkoğlu

Turkish Journal of Botany

The material of this study comprises macrofungi specimens collected from different localities in Bekilli (Denizli) in 1998 and 1999. As a result of field and laboratory studies, 61 taxa belonging to 2 classes (Ascomycetes and Basidiomycetes) and 28 families are reported.

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Seasonal Variation Of Phytoplankton And Value Of Chlorophyll A In The Sarıyar Dam Reservoir (Ankara, Turkey), Tahi̇r Atici, Olcay Obali Jan 2006

Seasonal Variation Of Phytoplankton And Value Of Chlorophyll A In The Sarıyar Dam Reservoir (Ankara, Turkey), Tahi̇r Atici, Olcay Obali

Turkish Journal of Botany

The phytoplanktonic algae were determined in samples taken from 7 different locations at the Sarıyar Dam Reservoir (SDR) from March 1996 to June 1997. The seasonal variation of phytoplankton and their chlorophyll a were determined and contents were discussed in relation to the physical and chemical parameters of the water. The divisions Bacillariophyta and Chlorophyta were dominant; however, Cyclotella, Navicula, Nitzschia and Synedra of Bacillariophyta, and Chlorella and Scenedesmus of Chlorophyta were abundant. Chlorophyll a reached its maximum levels during June and September 1996 and May 1997, corresponding to the maximum values of orthophosphate, sulphate, calcium and temperature in the …

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Seed Morphology And Seed Coat Sculpturing Of Epilobium L. Species (Onagraceae Juss.) From Iran, Reza Sheikh Akbari, Dina Azizian Jan 2006

Seed Morphology And Seed Coat Sculpturing Of Epilobium L. Species (Onagraceae Juss.) From Iran, Reza Sheikh Akbari, Dina Azizian

Turkish Journal of Botany

The seeds of 32 specimens belonging to 15 species from 2 sections of the genus Epilobium L. (Onagraceae Juss.) were studied by both a light and scanning electron microscope (SEM). Seed morphology of the examined specimens exhibits some variation in shape and size. Seed size ranges between 0.97 mm and 2.2 mm in length. They are ovate, oblong-ovate, and narrowly ovate (ovate-attenuate). The results of SEM investigation of seed coat sculpturing also revealed 5 distinct types of surface structure of the seeds, which are mainly correlated to external morphology of the species.

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