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Articles 1651 - 1680 of 1739
Full-Text Articles in Life Sciences
Pollen Morphology Of Turkish Chenopodium L. ( Chenopodiaceae), N. Münevver Pinar, Özden İnceoğlu
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.
The Plant Sociology And Ecology Of The Upper Göksu Catchment Area(Hadim-Konya) And Environs, Hayretti̇n Ocakverdi̇, Sali̇h Oflaz
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 …
Nuclear Dna Contents Of Some Endemic Hedysarum L. Species, Nükhet Akpinar, Bayram Yildiz
Nuclear Dna Contents Of Some Endemic Hedysarum L. Species, Nükhet Akpinar, Bayram Yildiz
Turkish Journal of Botany
The nuclear DNA contents and nuclear areas of some endemic Hedysarum L. species were investigated. A significant variation in the DNA content of Hedysarum species was established. The 2C nuclear DNA amount in the Hedysarum species (x = 8) ranged from approximately 4 to 6 picograms. It was found that the variation in the 2C nuclear DNA content was not related to chromosome numbers. However, there was a very high positive linear relationship between nuclear DNA content and nuclear area.
Vegetation Mosaic Around The Second Center Of Tourism Development In The Uludağ Mountain, Bursa, Turkey, Hülya Arslan, Gürcan Güleryüz, Mustafa Gökçeoğlu, Helmut Rehder
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.
A Concise Taxonomic Revision Of The Genus Alopecurusl. (Gramineae), Musa Doğan
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.
Pollen Flora Of Pakistan -Xv Geraniaceae, Anjum Perveen, Mohammad Qaiser
Pollen Flora Of Pakistan -Xv Geraniaceae, Anjum Perveen, Mohammad Qaiser
Turkish Journal of Botany
The pollen morphology of 13 species belonging to the 3 genera of the family Geraniaceae was investigated with a light microscope and scanning microscope. It is eurypalynous in nature. Pollen grains mostly oblate-spheroidal, rarely prolate-spheroidal or spheroidal, often sub-oblate. Tectum reticulate with dense beculae or gammate muri, or striate. On the basis of exine ornamentation and apertural types, 3 distinct pollen types were recognized viz., Erodium cicutarium-type, Geranium himalayense-type and Monsonia senegalensis-type.
Lichen Species In The North Of Karacabey County, Bursa Province, Turkey, Kenan Yazici
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.
Properties Of The Docking Site Of Photosystem 1 From Spinach, Ruffat Agalarov, Ni̇yaz Safarov, Ralphreed Ahad Gasanov
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.
Agrobacterium Tumefaciens-Mediated Transformation Of Sesame (Sesamum Indicuml.), Kemal Meli̇h Taşkin, A. Gülhan Ercan, Kenan Turgut
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.
Expression And Inheritance Of Gus Gene In Transgenic Tobacco Plants, Ti̇jen Talas Oğraş, Nermi̇n Gözükirmizi
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 …
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
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 …
A Palynological Survey Of Aquatic Flora Of Karachi-Pakistan, Anjum Perveen
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 …
Regeneration And Agrobacterium-Mediated Transformationstudies In Tomato ( Lycopersicon Esculentum Miller), Hüseyi̇n Avni̇ Öktem, Yeter Bülbül, Emre Öktem, Meral Yücel
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.
A New Genus ( Brossardia Boiss.) Record For Turkey, Nezaket Adigüzel, Mehmet Koyuncu
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.
New Records For The Lichen Flora Of Turkey, Şule Öztürk, Gönül Kaynak
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.
Callus Production And Plant Regeneration From Anther Culture Of Some Turkish Barley Cultivars, Çi̇ğdem Savaşkan, Ivona Szarejko, M. Ci̇hat Toker
Callus Production And Plant Regeneration From Anther Culture Of Some Turkish Barley Cultivars, Çi̇ğdem Savaşkan, Ivona Szarejko, M. Ci̇hat Toker
Turkish Journal of Botany
Anther culture of four different barley cultivars ( Hordeum vulgareL. cvs. Anadolu, Cumhuriyet-50, Obruk-86 and Tokak-157/37) currently cultivated in Turkey has been investigated. Two different culture media (BAC3 and FHG) were used and the effect of a 21-day cold pretreatment was studied. Androgenesis on BAC3 medium was evaluated statistically in all genotypes and the percentage of anther response and the frequency of calli production were found significantly different (P
Agrobacterium Rhizogenes-Mediated Hairy Root Formation In Some Rubia Tinctorum L. Populations Grown In Turkey, A. Gülhan Ercan, Kemal Meli̇h Taşkin, Kenan Turgut, Süer Yüce
Agrobacterium Rhizogenes-Mediated Hairy Root Formation In Some Rubia Tinctorum L. Populations Grown In Turkey, A. Gülhan Ercan, Kemal Meli̇h Taşkin, Kenan Turgut, Süer Yüce
Turkish Journal of Botany
Rubia tinctorumL. seeds were collected from 4 different regions of Turkey. Plants were grown in greenhouse and cotyle-dons were inoculated with Agrobacterium rhizogenes strains 15834, 2628, R1000 and 9365. Rubia tinctorum plants were also grown in the field for comparative analysis of root anthraquinone content. Agrobacterium rhizogenesstrain 2628 induced only callus formation on the cut surface of cotyledon explants while strains 15834, R1000 and 9365 produced hairy roots on the same explants. Anthraquinone content was identified in the extracts of the plant roots grown in the field and in the extracts of the Agrobacterium rhizogenes-induced hairy roots. The percentage of …
Scanning Electron Microscopy Study Of Pollen In Some Turkish Teucrium L. (Labiatae), Emel Oybak Dönmez, Özden İnceoğlu, Münevver Pinar
Scanning Electron Microscopy Study Of Pollen In Some Turkish Teucrium L. (Labiatae), Emel Oybak Dönmez, Özden İnceoğlu, Münevver Pinar
Turkish Journal of Botany
Detailed exine sculpturing of the pollen of 32 Turkish Teucrium L. (Labiatae) taxa has been investigated under SEM. Two main exine sculpturing types, verrucate (in sections Teucrium, Scordium, Boiss, Chamaedrys Benth., Polium Benth., Stachyobotrys Benth. and Scorodonia Benth.) and reticulate, (only in section Isotriodon Boiss.) have been defined and their photographs have been presented.
Macrofungi Of İzmir Province, Mehmet Hali̇l Solak, Mustafa Işiloğlu, Fahretti̇n Güci̇n, İsa Gökler
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. …
The Moss Flora Of Trabzon And Environs, Turan Özdemi̇r, Barbaros Çeti̇n
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).
Contributions To Turkish Mycoflora From The Ardanuç District Of Artvin Province, Kenan Demi̇rel
Contributions To Turkish Mycoflora From The Ardanuç District Of Artvin Province, Kenan Demi̇rel
Turkish Journal of Botany
Macrofungi collected from the Ardanuç district between 1994-1996, and 56 taxa belonging to Basidiomycetes were identified.
New Floristic Records For The Grid Squares (A4, B4), Bi̇lgi̇n Gökcüoğlu, Fatma Özdemi̇r, Mustafa Aydoğdu
New Floristic Records For The Grid Squares (A4, B4), Bi̇lgi̇n Gökcüoğlu, Fatma Özdemi̇r, Mustafa Aydoğdu
Turkish Journal of Botany
No abstract provided.
The Morphological, Anatomical And Karyological Propertiesof Salvia Sclarea L., Canan Özdemi̇r, Gülcan Şenel
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.
Airborne Pollen Concentration In Kütahya, Adem Biçakci, Osman Nuri̇ Benli̇oğlu, Di̇lek Erdoğan
Airborne Pollen Concentration In Kütahya, Adem Biçakci, Osman Nuri̇ Benli̇oğlu, Di̇lek Erdoğan
Turkish Journal of Botany
The airborne pollen cocentration in the atmosphere of Kütahya was determined by gravimetry with a Durham sampler in 1996. During this study, 23 taxa of arboreal and 14 taxa of herbaceous pollen grains were collected and identified. Pollen from the following taxa were also found to be prevalent in the atmosphere of Kütahya: Pinus L., Cupressaceae, Platanus orientalis L., Quercus L., Oleaceae, Gramineae, Urticaceae, Chenopodiaceae/ Amaranthaceae, Compositae and Plantago L. The effects of meteorological factors (temperature, humidity, wind speed, rainfall) on pollen production, dispersal and concentration in the atmosphere of Kütahya were observed.
In Vitro Micropropagation Of Sainfoin ( Onobrychis Viciifolia Scop.), Cengi̇z Sancak
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 …
The Moss Flora Of The Uludağ National Park (Bursa/Turkey), Barbaros Çeti̇n
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.
The Effect Of Uracil On The Germination And Growthof Some Leguminous Plants, Yusuf Turan, Muhsi̇n Konuk
The Effect Of Uracil On The Germination And Growthof Some Leguminous Plants, Yusuf Turan, Muhsi̇n Konuk
Turkish Journal of Botany
All known pyrimidine and pyrimidine-derived secondary producs originate from uracil or its precursor, uracil-6-carboxylic acid. The biosynthesis of these products has been suggested to be uracil detoxication mechanisms. The possible toxic effects of uracil on the germination and growh of Pisum sativum L. cultivar Meteor, Lathyrus tingitanus L. in which pyrimidine-derived secondary products occur naturally, and of Phaseolus aureus Roxb. and Glycine max (L.) Merr., in which these compouns do not occur, were examined. The results show that the germination and growth of the P. aureus and G. max seeds under investigation were considerably inhibited by exogenous uracil. The effect …
The Liverworts ( Hepaticae) Of Uludağ National Park (Bursa), Barbaros Çeti̇n
The Liverworts ( Hepaticae) Of Uludağ National Park (Bursa), Barbaros Çeti̇n
Turkish Journal of Botany
During the vegetation period, a total of 52 plant specimens were collected from Uludağ National Park (Bursa) between 1988 and 1989. At the end of this investigation, 23 liverwort species were identified, belonging to 15 families and 17 genera. Of these, 4 taxa are new for the Al grid-square. Jungermannia hyalina Lyell, Marsupella funckii (Web. & Mohr) Dum and Calypogeia azureaStotler & Crotz, are reported for the second time from Turkey.
A New Record From Turkey: Jurinea Stoechadifolia (M.Bieb) Dc., Hayri̇ Duman, Zeki̇ Aytaç
A New Record From Turkey: Jurinea Stoechadifolia (M.Bieb) Dc., Hayri̇ Duman, Zeki̇ Aytaç
Turkish Journal of Botany
Jurinea stoechadifolia (M.Bieb) DC. ( Compositae) is reported for the first time (A4 Çankiri) for the flora of Turkey.
Prof.Dr. Hüsnü Demi̇ri̇z (1920-1999), Turhan Baytop
Prof.Dr. Hüsnü Demi̇ri̇z (1920-1999), Turhan Baytop
Turkish Journal of Botany
No abstract provided.