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1999

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Articles 2431 - 2460 of 2601

Full-Text Articles in Life Sciences

The Liverworts (Hepaticae)Of Sinop And Its Environs(Ayancık, Boyabat And Gerze), Barbaros Çeti̇n Jan 1999

The Liverworts (Hepaticae)Of Sinop And Its Environs(Ayancık, Boyabat And Gerze), Barbaros Çeti̇n

Turkish Journal of Botany

In the vegetation period, a total of 45 plant specimens were collected from the area between 1993 and 1995. At the end of this investigation 19 liverworts species were identified, belonging to 13 families and 14 genera. Of these, 8 taxa are new for the A3 grid-square. Blasia pusilla L., is reported for the second time from Turkey.

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In Vitro Micropropagation Of Sainfoin ( Onobrychis Viciifolia Scop.), Cengi̇z Sancak Jan 1999

In Vitro Micropropagation Of Sainfoin ( Onobrychis Viciifolia Scop.), Cengi̇z Sancak

Turkish Journal of Botany

A method for in vitro micropropagation of sainfoin was developed. Following optimization of the growth regulator combinations in the media, large numbers of shoots were propagated from a single embryonic axis within 8 weeks on Murashige and Skoog (MS) media supplemented with combination of different 6-benzylaminopurine (BAP), indole-butyric acid (IBA) and ?-naphthaleneacetic acid (NAA) concentrations. The highest number of shoot multiplication was obtained on the media containing 2 mg/l BAP and either 0.05 or 0.1 mg/l IBA, and on the media supplemented with 2 mg/l BAP and either 0.05, 0.1 or 0.5 mg/l NAA, or 8 mg/l BAP and 0.05 …

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A New Genus ( Mericarpaeaboiss.) Record From Turkey, Zeki̇ Aytaç, Nezaket Adigüzel Jan 1999

A New Genus ( Mericarpaeaboiss.) Record From Turkey, Zeki̇ Aytaç, Nezaket Adigüzel

Turkish Journal of Botany

Mericarpaea ciliata(Banks & Sol.) Eig ( Rubiaceae) is recorded from Turkey for the first time. It is also new genus record ( MericarpaeaBoiss.) for Turkey.

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Check-List Of Additional Taxa To The Supplement Flora Of Turkey Ii, Neri̇man Özhatay, Şükran Kültür, Nevri̇ye Aksoy Jan 1999

Check-List Of Additional Taxa To The Supplement Flora Of Turkey Ii, Neri̇man Özhatay, Şükran Kültür, Nevri̇ye Aksoy

Turkish Journal of Botany

This checklist contains a total of 168 taxa published as additions to the Flora of Turkey. It includes details of taxa neither recorded by P.H.Davis' "Flora of Turkey and the East Aegean Islands" or its Supplement, nor in the first of this series of checklists. The records in this list are based on data given in nearly 100 publications published up to the end of 1998.

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Evaluation Of Various Sunflower ( Helianthus Annuus L.) Genotypes For Agrobacterium Tumefaciens-Mediated Gene Transfer, Ekrem Gürel, Kemal Kazan Jan 1999

Evaluation Of Various Sunflower ( Helianthus Annuus L.) Genotypes For Agrobacterium Tumefaciens-Mediated Gene Transfer, Ekrem Gürel, Kemal Kazan

Turkish Journal of Botany

In this work, 10 sunflower ( Helianthus annuus L.) genotypes were evaluated for their suitability for Agrobacterium tumefaciens-mediated gene transfer based on detection of a reported gene expression (GUS). A number of factors including the type of shoot-tip explant (split vs. intact), bacterial strain/binary vector combinations and wounding intact shoot-tips by particle bombardment were examined. Genotypes showed significant differences in their transformation efficiencies ranging from 0.0 to 82.7% GUS positive explants, hybrid genotypes being more responsive to Agrobacterium infection than inbred lines. Use of split shoot-tip explants did not increase the transformation efficiency over intact explants but the AGL-1/pKIWI strain/vector …

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Pollen Morphology Of Turkish Chenopodium L. ( Chenopodiaceae), N. Münevver Pinar, Özden İnceoğlu Jan 1999

Pollen Morphology Of Turkish Chenopodium L. ( Chenopodiaceae), N. Münevver Pinar, Özden İnceoğlu

Turkish Journal of Botany

Pollen grains of 12 species of the genus Chenopodium L. ( Chenopodiaceae), of which morphological separation is problematical, have been examined in detail comparatively by using light microscopy (LM), scanning (SEM) and transmission electron microscopy (TEM). Pollen description of each taxon has been given. Pollen garins of ChenopodiumL. species examined are radially symmetrical, isopolar, pantopolyporate and spheroidal. Their exine structure is similar. In the genus, five pollen types have been defined, mainly on the basis of pollen size.

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The Moss Flora Of The Uludağ National Park (Bursa/Turkey), Barbaros Çeti̇n Jan 1999

The Moss Flora Of The Uludağ National Park (Bursa/Turkey), Barbaros Çeti̇n

Turkish Journal of Botany

Field studies were conducted to determine the flora of Uludağ (Bursa) National Park during 1988, 1989 and 1996. Almost 180 plant specimens were collected in these studies. After the identification of these specimens, 85 taxa at specific and sub-specific ranks were determined. Of these, 28 taxa are new to the Al grid-square. In addition, Polytrichum commune var. perigoniale (Michx.) Hampe is a new record for the moss flora of Turkey.

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The Plant Sociology And Ecology Of The Upper Göksu Catchment Area(Hadim-Konya) And Environs, Hayretti̇n Ocakverdi̇, Sali̇h Oflaz Jan 1999

The Plant Sociology And Ecology Of The Upper Göksu Catchment Area(Hadim-Konya) And Environs, Hayretti̇n Ocakverdi̇, Sali̇h Oflaz

Turkish Journal of Botany

The Taurus mountains area is one of the most interesting areas of Turkey as regards flora and vegetation. The region is situated on a transition zone between the Mediterranean and continental climate and contains many microclimate areas because of its topographic character. Therefore, studies on the flora and vegetation of the Taurus mountains give quite different results. The studies on the catchment area of Göksu valley and environs which exhibit Mediterranean climate and is a part of the central Tauruses were ccarried out in 1995-1996. In this study, Braun-Blanquet's floristic system principle was used and six associations (five of them …

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Contributions To The Flora Of The Western Part Of Istranca Mountains (Kırklareli/Thrace Region), Celal Yarci Jan 1999

Contributions To The Flora Of The Western Part Of Istranca Mountains (Kırklareli/Thrace Region), Celal Yarci

Turkish Journal of Botany

This study was carried out for to contribute to the flora of Istranca (Yildiz) Mountains Iying from northwest to southeast on the north of Thrace Region between 1996-1997. The study area is placed in A1 (E) square in grid system adopted DAVIS and in Euro-Siberian phytogeographical region. According to the results of this study; 321 taxa belonging to 219 genera and 65 families were recorded. Among these taxa, there are 4 Pteridophytes and 317 Spermatophytes (253 Dicotyledones and 64 Monocotyledones). The largest families are as follows: Poaceae 38 taxa (11.83%), Asteraceae 35 taxa (10.90%) and Lamiaceae 21 taxa (6.54%). The …

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A Concise Taxonomic Revision Of The Genus Alopecurusl. (Gramineae), Musa Doğan Jan 1999

A Concise Taxonomic Revision Of The Genus Alopecurusl. (Gramineae), Musa Doğan

Turkish Journal of Botany

An account of 29 species and 12 subspecies identified in the genus AlopecurusL. is given including the genus description, a key for the species, species descriptions, flowering times, habitats, altitudes, type citations, citation of the specimens examined, general distributions and biogeography of the species.

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Lichen Species In The North Of Karacabey County, Bursa Province, Turkey, Kenan Yazici Jan 1999

Lichen Species In The North Of Karacabey County, Bursa Province, Turkey, Kenan Yazici

Turkish Journal of Botany

A total of seventy eight lichen species, which belongs to twenty families in Ascomycotina, are listed for Karacabey county, Bursa Province. 28 of which are new records for Bursa province. In addition the distribution and substrata of these species are given.

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Prof.Dr. Hüsnü Demi̇ri̇z (1920-1999), Turhan Baytop Jan 1999

Prof.Dr. Hüsnü Demi̇ri̇z (1920-1999), Turhan Baytop

Turkish Journal of Botany

No abstract provided.

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Properties Of The Docking Site Of Photosystem 1 From Spinach, Ruffat Agalarov, Ni̇yaz Safarov, Ralphreed Ahad Gasanov Jan 1999

Properties Of The Docking Site Of Photosystem 1 From Spinach, Ruffat Agalarov, Ni̇yaz Safarov, Ralphreed Ahad Gasanov

Turkish Journal of Botany

The bimolecular interaction between Plastocyanin and Photosystem I under steady-state illumination was studied. The dependence of the O 2 consumption rate on Plastocyanin concentration, electrostratic effect in the presence of mono- and divalent cations and pH-dependence were investigated. A mechanism of activating complexes formation between Plastocyanin and Photosystem I in frame of trimeric structure of Photosystem I is proposed.

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Agrobacterium Tumefaciens-Mediated Transformation Of Sesame (Sesamum Indicuml.), Kemal Meli̇h Taşkin, A. Gülhan Ercan, Kenan Turgut Jan 1999

Agrobacterium Tumefaciens-Mediated Transformation Of Sesame (Sesamum Indicuml.), Kemal Meli̇h Taşkin, A. Gülhan Ercan, Kenan Turgut

Turkish Journal of Botany

Sesamum indicum L. cv. Özberk was infected with various Agrobacterium tumefaciens strains to screen susceptibility to infection by Agrobacteria. Following infection, tumorigenesis was efficient with wild type A. tumefaciens strains, A281 and A136 NC, and transgenic cells were obtained with disarmed A. tumefaciens strain LBA4404/pBI121, harbouring a reporter gene. At the wound sites, tumorigenesis induced by the succinamopine strain A281 was more extensive than by the octopine strain A136 NC.

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Expression And Inheritance Of Gus Gene In Transgenic Tobacco Plants, Ti̇jen Talas Oğraş, Nermi̇n Gözükirmizi Jan 1999

Expression And Inheritance Of Gus Gene In Transgenic Tobacco Plants, Ti̇jen Talas Oğraş, Nermi̇n Gözükirmizi

Turkish Journal of Botany

Agrobacterium tumefaciens-mediated transformation of tobacco leaf discs was performed with plant transformation vec-tors of pBI 121 and pGus-Int. Both carry the neomycin phosphotransferase II ( npt II) gene and, unlike the pBI 121, pGus-Int car-ries a portable plant intron inside the beta-glucuronidase (GUS) gene. In addition to the integration of the marker genes into the genomes of primary transformants, R1 and R2 progenies were confirmed by polymerase chain reaction (PCR) and Southern blot analyses. Histochemical and fluorometric analyses were also performed to determine the activity of the GUS gene. Segregation of progenies on kanamycin-resistance trait was also shown as evidence …

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Marker Gene Delivery To Mature Wheat Embryos Via Particle Bombardment, Hüseyi̇n Avni̇ Öktem, Füsun İnci̇ Eyi̇doğan, Fahri̇ye Setenci̇ Ertuğrul, Meral Yücel, Barnabas Jenes, Otto Toldi Jan 1999

Marker Gene Delivery To Mature Wheat Embryos Via Particle Bombardment, Hüseyi̇n Avni̇ Öktem, Füsun İnci̇ Eyi̇doğan, Fahri̇ye Setenci̇ Ertuğrul, Meral Yücel, Barnabas Jenes, Otto Toldi

Turkish Journal of Botany

The possibility of transferring genes to mature wheat embryos ( Triticum aestivumL. and T. durum Desf.) via accelerated and DNA-coated tungsten particles was investigated. Mature embryos isolated from bread (cv. Atay) and durum (cv. Çakmak) wheat were utilised as targets for bombardment. DNA in the form of circular plasmid (pBSGUSINT) was precipitated on tungsten particles (ca. 2 \mum diameter) using the calcium nitrate method. Mature embryos were bombarded by a microprocessor-controlled particle delivery instrument (GENEBOOSTER TM ) driven by compressed nitrogen gas. Bombardment was carried out at various gas pressure and in a chamber vacuum. The target material was subjected …

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A Palynological Survey Of Aquatic Flora Of Karachi-Pakistan, Anjum Perveen Jan 1999

A Palynological Survey Of Aquatic Flora Of Karachi-Pakistan, Anjum Perveen

Turkish Journal of Botany

The pollen morphology of 16 species of aquatic angiosperms, distributed in 14 families from Karachi was examined by light and scanning microscope. Pollen grains are usually free, rarely united, mostly radially symmetrical, isopolar-apolar, occasionally-heteropolar. Simple aperturate (porate or colpate) pollen are more frequently found. Number of apertures varies from 1-3 or more than 30, rarely compound aperture as in Enhydra fluctuans Lour. Tectum of the families also is quite variable, ranging from reticulate to rugulate, striate, fossulate, echinate or scabrate/areolate. The pollen morphology of the families is significantly useful for characterizing the species. Apertural types and tectum types are the …

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The Woody Vegetation Of The Kelkit Valley, Fergan Karaer, Mahmut Kilinç, H. Güray Kutbay Jan 1999

The Woody Vegetation Of The Kelkit Valley, Fergan Karaer, Mahmut Kilinç, H. Güray Kutbay

Turkish Journal of Botany

In this work, the forest, macchie and hygrophilous vegetation of Kelkit Valley was studied. Interesingly the study area is a transitional zone along the boundries of Central Anatolia and the Central and East Black Sea regions. From the phytogeographical point of view this area is situated between the Euro-Siberian and Irano-Turanian floristic regions. This study was carried out according to the Braun-Blanquet method. Twelve plant associations and 2 subassociations were identified belonging to four different vegetation types. Ten of the associations and two subasociations here are determined as new associations. Vegetation tables are given.

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Regeneration And Agrobacterium-Mediated Transformationstudies In Tomato ( Lycopersicon Esculentum Miller), Hüseyi̇n Avni̇ Öktem, Yeter Bülbül, Emre Öktem, Meral Yücel Jan 1999

Regeneration And Agrobacterium-Mediated Transformationstudies In Tomato ( Lycopersicon Esculentum Miller), Hüseyi̇n Avni̇ Öktem, Yeter Bülbül, Emre Öktem, Meral Yücel

Turkish Journal of Botany

An optimized regeneration protocol and a suitable transformation technique is a necessity in obtaining transgenic plants in a given plant species. This work summarizes a simple culture method to obtain rooted plants from leaf pieces of two tomato cul-tivars (ES58 and WC156) within 3-4 months. Here, we also present our preliminary results on transformation experiments carried out with 8-day-old cotyledon explants and Agrobacterium tumefaciensEHA105 strain.

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A New Genus ( Brossardia Boiss.) Record For Turkey, Nezaket Adigüzel, Mehmet Koyuncu Jan 1999

A New Genus ( Brossardia Boiss.) Record For Turkey, Nezaket Adigüzel, Mehmet Koyuncu

Turkish Journal of Botany

Brossardia papyracea Boiss. ( Cruciferae / Brassicaceae) is recorded for the first time from Turkey. This is also a new genus record ( Brossardia Boiss.) for Turkey.

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New Records For The Lichen Flora Of Turkey, Şule Öztürk, Gönül Kaynak Jan 1999

New Records For The Lichen Flora Of Turkey, Şule Öztürk, Gönül Kaynak

Turkish Journal of Botany

Three foliose lichen species, Collema parvumDegel., Phaeophyscia constipata ( Norrl. & Nyl. ) Moberg, Xanthoria fulva (Hoffm.) Poelt & Petutsching, are new records for Turkey.

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An Investigation On Rooting Of Juglans Regia L. Hardwood Cuttings, Tohi̇t Güneş Jan 1999

An Investigation On Rooting Of Juglans Regia L. Hardwood Cuttings, Tohi̇t Güneş

Turkish Journal of Botany

The rootinf of Juglans regia L. ( Juglandeceae) hardwood cuttings was investigated. The cuttings were treated with a solution of 100 and 1000 ppm IBA concentrations. One and two year old shoot cuttings were used and carbohydrate changes were recorded during rooting. No rooting was observed in any cutting, 32% callus formation was observed on the basal parts of the cuttings. The flower buds burst earlier than the vegetative buds and developed male or female flowers. Callus formation rate or bud burst was not significantly affected by the treatment of IBA. Carbohydrate changes occurred during the culture, but there was …

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Macrofungi Of İzmir Province, Mehmet Hali̇l Solak, Mustafa Işiloğlu, Fahretti̇n Güci̇n, İsa Gökler Jan 1999

Macrofungi Of İzmir Province, Mehmet Hali̇l Solak, Mustafa Işiloğlu, Fahretti̇n Güci̇n, İsa Gökler

Turkish Journal of Botany

This investigation was done basing on the macrofungi specimens collected from Izmir province situated in Eagean Region in the West Anatolia between 1992 and 1996. As a result of the studing of laboratory and field, 104 taxa belonging to 32 families were determined. One genus ( Lyophyllum Karst.), 8 species ( Clitocybe bresadoliana Sing., Cystoderma granulosum (Batsch: Fr.) Fay., Lyophyllum favrei Haller & Haller., Melanoleuca paedida (Fr.) Kühn. & Mre., Mycena rosea (Bull.) Gramberg., Stereum ostrea(Blume & Nees ex Fr.) Fr., Strobilurus stephanocystis (Hora) Sing., Tricholoma pardalotum Herink & Kotl.), and 1 variety ( Melanoleuca cognata var. typica (Fr.) Konr. …

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The Moss Flora Of Trabzon And Environs, Turan Özdemi̇r, Barbaros Çeti̇n Jan 1999

The Moss Flora Of Trabzon And Environs, Turan Özdemi̇r, Barbaros Çeti̇n

Turkish Journal of Botany

In this study, 120 taxa were identified by the authors. These belong to 27 families and 61 genera of Bryophytes. of these 25 taxa are new for the A4 grid-square adopted by Henderson (1961).

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New Floristic Records For The Grid Squares (A4, B4), Bi̇lgi̇n Gökcüoğlu, Fatma Özdemi̇r, Mustafa Aydoğdu Jan 1999

New Floristic Records For The Grid Squares (A4, B4), Bi̇lgi̇n Gökcüoğlu, Fatma Özdemi̇r, Mustafa Aydoğdu

Turkish Journal of Botany

No abstract provided.

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New Floristic Records For The Grid Squares C7 And C8 In Turkey From The Fabaceae, A. Selçuk Erteki̇n Jan 1999

New Floristic Records For The Grid Squares C7 And C8 In Turkey From The Fabaceae, A. Selçuk Erteki̇n

Turkish Journal of Botany

No abstract provided.

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The Morphological, Anatomical And Karyological Propertiesof Salvia Sclarea L., Canan Özdemi̇r, Gülcan Şenel Jan 1999

The Morphological, Anatomical And Karyological Propertiesof Salvia Sclarea L., Canan Özdemi̇r, Gülcan Şenel

Turkish Journal of Botany

The morphological, anatomical and karyological properties of Salvia sclarea L. were investigated. In addition, glandular and eglandular hairs were examined and classified. In the morphological study it was observed that the species have a perennial root system. The herbaceous stem is rectangular. Leaves are simple. Glandular and eglandular hairs are present on both surfaces of the leaves. Inflorescence is compound raceme. In anatomical studies, the internal morphological features of root, stem, leaf, petiole and flower were determined. The chromosome morphology of this species was examined and the diploid chromosome number was found to be 2n=22.

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New Floristic Records For The Squares B3 And B4 (Ilgın-Konya, Turkey), Memduh Seri̇n, Kuddisi Ertuğrul Jan 1999

New Floristic Records For The Squares B3 And B4 (Ilgın-Konya, Turkey), Memduh Seri̇n, Kuddisi Ertuğrul

Turkish Journal of Botany

No abstract provided.

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Morphological, Anatomical And Ecological Studies On The Two Turkish Endemic Species Collected From Kaz Dağı (B1 Balıkesir) "Allium Sibthorpianum Schultes & Schultes Fil. And Allium Reuterianum Boiss.", İsmet Uysal Jan 1999

Morphological, Anatomical And Ecological Studies On The Two Turkish Endemic Species Collected From Kaz Dağı (B1 Balıkesir) "Allium Sibthorpianum Schultes & Schultes Fil. And Allium Reuterianum Boiss.", İsmet Uysal

Turkish Journal of Botany

This investigation englightens the morphological, anatomical and ecological characteristics of Kazdağı endemics namely Allium reuterianum Boiss. and Allium sibthorpianum Schultes & Schultes fil. (Liliaceae). A. sibthorpianum occurs in Bursa, Kütahya, Denizli, Isparta and Çanakkale (newly recorded), whereas A. reuterianum is found in Southwest Anatolia, Islands, Manisa, Denizli, Muğla, Isparta and Çanakkale (newly recorded). Root anatomy of A. sibthorpianum and A. reuterianum typically show exodermis and an empty pith. In addition in the scapes of both the species layering in the area between epidermis and cuticle results in its thickening. The leaves in both species are not hairy. Reticulate shaped open …

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Vegetation Mosaic Around The Second Center Of Tourism Development In The Uludağ Mountain, Bursa, Turkey, Hülya Arslan, Gürcan Güleryüz, Mustafa Gökçeoğlu, Helmut Rehder Jan 1999

Vegetation Mosaic Around The Second Center Of Tourism Development In The Uludağ Mountain, Bursa, Turkey, Hülya Arslan, Gürcan Güleryüz, Mustafa Gökçeoğlu, Helmut Rehder

Turkish Journal of Botany

The vegetation mosaic around the Second Center of Tourism Development in Uludağ (Bursa) was determined by aerial photographs and Geographical Information Systems (GIS) techniques. The vegetation characteristic of the area is composed of dwarf shrub formation (Vaccinium myrtillus-Juniperus communis-comm. and Juniperus communis-comm.). In addition, a database related to the vegetation mosaic of the area was prepared.

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