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Articles 1 - 30 of 43
Full-Text Articles in Life Sciences
The Liverwort Flora Of Antarctica (2000), Adnan Erdağ
The Liverwort Flora Of Antarctica (2000), Adnan Erdağ
Turkish Journal of Botany
No abstract provided.
Pollen Flora Of Pakistan -Xxvii Nyctaginaceae, Anjum Perveen, Mohammad Qaiser
Pollen Flora Of Pakistan -Xxvii Nyctaginaceae, Anjum Perveen, Mohammad Qaiser
Turkish Journal of Botany
The pollen morphology of eight species belonging to two genera, i.e., Boerhavia L., and Commicarpus Standley, of the family Nyctaginaceae, was studied by light microscope and scanning microscope. The family has uniform pollen characters. Pollen grains mostly spheroidal, pantoporate, ± circular, pores small or large, non-operculate, pore plate ± scabrate-spinulose. Tectum tubuliferous spinulose.
The Flora Of The Boyabat (Sinop) Dam And Its Environs, Hasan Korkmaz, Ali̇ Engi̇n
The Flora Of The Boyabat (Sinop) Dam And Its Environs, Hasan Korkmaz, Ali̇ Engi̇n
Turkish Journal of Botany
This study was carried out over three years, from 1990 to 1993. The study area is situated between Kepez gorge and Devrez stream of Kızılırmak valley. In the study area, 1016 species belonging to 441 genera and 99 families were identified. Distribution rates of the species in terms of phytogeographic regions are as follows: 12.40% Euro-Siberian, 3.83% Euxine, 0.68% Hyrcano-Euxine, 11.31% Irano-Turanian and 9.74% Mediterranean. The number of endemic species is 106 and the rate of endemism is 10.43%.
Three New Records For The Marine Algal Flora Of Turkey, Ergün Taşkin, Mehmet Öztürk, Oğuz Kurt, Veysel Aysel
Three New Records For The Marine Algal Flora Of Turkey, Ergün Taşkin, Mehmet Öztürk, Oğuz Kurt, Veysel Aysel
Turkish Journal of Botany
In this study, three Cyanophyceae species new for Turkey are reported. These specimens are Oscillatoria bonnemaisonii (P.Crouan & H.Crouan) P.Crouan & H.Crouan, Microcoleus chthonoplastes Thuret (Oscillatoriales) and Dichothrix spiralis Fritsch (Nostocales). They were determined to be epiphytic on the other algae which were found at the upper-infralittoral zone of the bay of İskenderun (Mediterranean Sea, Turkey).
The Origin Of The 'Wild Orchards' Of Central Anatolia, Henk Woldring, Rene Cappers
The Origin Of The 'Wild Orchards' Of Central Anatolia, Henk Woldring, Rene Cappers
Turkish Journal of Botany
Palynological investigations have revealed that the deforestation of Central Anatolia started c. 4000 BP. At present, most of the land is cultivated and only small patches of woodland occur in remote mountain areas. These woodlands are dominated by deciduous oaks ( Quercus L. spp.) or locally by junipers ( Juniperus L. spp.). A pattern of scattered fruit trees, the so-called wild orchards, characterizes the cultivated fields. Another type of arboreal vegetation is found on isolated rock outcrops in the fields. Surveys of the vegetation types show that oaks are uncommon among the fields and on the rock outcrops. By contrast, …
The Effect Of Glycinebetaine On The Heat Stability Of Photosynthetic Reactions In Thylakoid Membranes, Yagut M. Allakhverdieva, Mahir D. Mamedov, Ralphreed A. Gasanov
The Effect Of Glycinebetaine On The Heat Stability Of Photosynthetic Reactions In Thylakoid Membranes, Yagut M. Allakhverdieva, Mahir D. Mamedov, Ralphreed A. Gasanov
Turkish Journal of Botany
Heat inactivation of various photosynthetic electron transport reactions were investigated in the presence/absence of glycinebetaine (betaine) in unstacked thylakoid membranes from spinach. The activity of Photosystem II (PS II) is more sensitive to heat than that of Cytochrome bf (cyt.bf) and Photosytem I (PS I) complexes. The data obtained clearly demonstrated the protection of PS II and PS I electron transfer by betaine under high temperatures. The phenomena observed are probably related to the stabilization of the higher-order structures of PS II and PS I by betaine.
Periodical Effect Of Cement Dust Pollution On The Growth Of Some Plant Species, Muhammad Zafar Iqbal, Muhammad Shafiq
Periodical Effect Of Cement Dust Pollution On The Growth Of Some Plant Species, Muhammad Zafar Iqbal, Muhammad Shafiq
Turkish Journal of Botany
A significant reduction in plant cover, height and number of leaves for Carissa carandas L. was observed. Azadirachta indica(L.) A.Juss. showed no significant changes in plant cover and height with the exception of number of leaves. A. indicashowed a significant (p
Callus Development And Indirect Shoot Regeneration From Seedling Explants Of Sugar Beet ( Beta Vulgarisl.) Cultured In Vitro, Songül Gürel, Ekrem Gürel, Zeki̇ Kaya
Callus Development And Indirect Shoot Regeneration From Seedling Explants Of Sugar Beet ( Beta Vulgarisl.) Cultured In Vitro, Songül Gürel, Ekrem Gürel, Zeki̇ Kaya
Turkish Journal of Botany
For callus production, hypocotyl, cotyledon, petiole and leaf explants from seedlings of different sugar beet ( Beta vulgaris L.) breeding lines were cultured on MS medium containing BAP or KIN in combination with NAA or 2,4-D at 0.0, 0.5 or 1.0 mg/l. The use of both auxins in combination with 0.5 mg/l BAP or 0.5 mg/l KIN resulted in greater amounts of callus from all types of explants. However, hypocotyl and cotyledon explants produced significantly more callus than petiole and leaf explants when the means of all lines were taken into account. Two types of callus were usually obtained, white …
Pollen Flora Of Pakistan - Xxviii: Resedaceae, Anjum Perveen, Mohammad Qaiser
Pollen Flora Of Pakistan - Xxviii: Resedaceae, Anjum Perveen, Mohammad Qaiser
Turkish Journal of Botany
The pollen morphology of 4 species belonging to the 3 genera of the family Resedaceae was investigated using a light microscope and scanning microscope. Pollen grains usually radially symmetrical, isopolar, sub-prolate, rarely prolates pheroidal, tricolpate or tricolporate. Tectum reticulate. However, apertural type and pollen shape are the most significant pollen characters for delimiting the genera. On the basis of apertural types 2 distinct pollen types are recognized, namely, I: Tricolpate-type and II: Tricolporate-type.
Using The Green Flagellate Euglena Gracilis Klebs As Physiological Dosimeter: Is A Long-Term Bioassay More Significant Than A Short-Term One?, Roman A. Danilov, Nils C. A. Ekelund
Using The Green Flagellate Euglena Gracilis Klebs As Physiological Dosimeter: Is A Long-Term Bioassay More Significant Than A Short-Term One?, Roman A. Danilov, Nils C. A. Ekelund
Turkish Journal of Botany
The use of short-term tests with E. gracilis Klebs in order to assess toxicity cannot be viewed as absolutely preferable. At least in the case with wastewater from the pulp and paper industry, 7 day-tests could lead to more explanatory and significant results.
The Clypeate Pollen Grains Of Turkish Iris L. (Iridaceae): Subgenus Scorpiris Sach, Emel Oybak Dönmez, Münevver Pinar
The Clypeate Pollen Grains Of Turkish Iris L. (Iridaceae): Subgenus Scorpiris Sach, Emel Oybak Dönmez, Münevver Pinar
Turkish Journal of Botany
The clypeate pollen grains of some species of Turkish Iris L. (Iridaceae) taxa belonging to the subgenus Scorpiris Spach have been investigated. Attention is given to characteristics of exine sculpturing and the exine shields using light microscopy and scanning electron microscopy. The pollen grains of the Scorpiris are shown to be uniform, especially with regard to pollen shape and exine sculpturing. However, a trend towards greater pollen size accompanied by higher exine shield number is noted from the less specialised taxa to the more specialised taxa. It is also considered that the clypeate pollen type is unique to subgenus Scorpiris …
A New Record From Turkey: Ranunculus Bulbilliferus Boiss. Et Hoh., Lütfi̇ Behçet
A New Record From Turkey: Ranunculus Bulbilliferus Boiss. Et Hoh., Lütfi̇ Behçet
Turkish Journal of Botany
Ranunculus bulbilliferus Boiss. & Hoh. (Ranunculaceae) is recorded for the first time (B9 Van) for the flora of Turkey.
Heavy Metal Accumulation And Detoxification Mechanisms In Plants, Abdul R. Memon, Di̇ğdem Aktoprakligi̇l, Ayli̇n Özdemi̇r, Anastassiia Vertii
Heavy Metal Accumulation And Detoxification Mechanisms In Plants, Abdul R. Memon, Di̇ğdem Aktoprakligi̇l, Ayli̇n Özdemi̇r, Anastassiia Vertii
Turkish Journal of Botany
Toxic metal contamination of soil, aqueous waste streams and groundwater causes major environmental and human health problems. The most commonly used methods for dealing with heavy metal pollution are still extremely costly. Phytoremediation is the use of plants to extract, sequester and/or detoxify pollutants and is a new and powerful technique for environmental clean-up. Plants are ideal agents for soil and water remediation because of their unique genetic, biochemical and physiological properties. Considerable advances have been made in recent decades in developing endemic or genetically engineered plants for the remediation of environmental clean-up. In the present review, current knowledge about …
The Effects Of Different Mineral Nutrients On The Levels Of Cytokinins In Maize (Zea Mays L.), Peyami̇ Battal, Beki̇r Ti̇lekli̇oğlu
The Effects Of Different Mineral Nutrients On The Levels Of Cytokinins In Maize (Zea Mays L.), Peyami̇ Battal, Beki̇r Ti̇lekli̇oğlu
Turkish Journal of Botany
In this study, Z (trans-Zeatin) and ZR (trans-Zeatin Riboside) levels in the roots, stems, leaves, flowers and fruits of maize plants (Zea mays L.) were determined using high performance liquid chromatography (HPLC). Plants were grown in media containing macro elements (nitrogen, phosphorus, potassium, calcium, magnesium, sulphur and iron) in optimum, deficient and excess concentrations. According to the average Z values for all periods, the highest Z levels were determined in the roots of plants treated with excessive P (-P); in stems, female flowers treated with excessive K (-K) and in leaves and kernels treated with excessive Ca (-Ca). The highest …
A Description Of The Vegetation Mosaic Of The Forests Of Yirce And Muratdere (Bilecik-Bursa, Turkey) By Satellite Remote Sensing, Cengi̇z Türe
Turkish Journal of Botany
The aim of this study is to describe the cut-off borders and the structure of vegetation mosaics of existing plant communities in the area, using traditional flora and vegetation methods and satellite remote sensing (Landsat satellite pictures and Geographical Information System (GIS) data). The results indicate that Pinus nigra L. subsp. pallasiana (Lamb.) Holmboe and Fagus orientalis Lipsky plant communities together with Quercus pubescens Willd. and Quercus cerris L. var. cerris could be differentiated. The coverage rates of dominant plant communities in the research area were as follows: Fagus orientalis (92%), Pinus nigra subsp. pallasiana (73%), Quercus pubescens and Quercus …
A Study On The Autecology Of Reseda Lutea L. (Resedaceae) Distributed In Western Anatolia, Yunus Doğan
A Study On The Autecology Of Reseda Lutea L. (Resedaceae) Distributed In Western Anatolia, Yunus Doğan
Turkish Journal of Botany
The aim of this study was to determine the autecological characteristics of Reseda lutea L. (Resedaceae) distributed in Western Anatolia. The chemical and physical analysis was carried out on soil and plant samples collected from 54 different localities in Western Anatolia. The results show that the plant generally prefers sandy-loam and sandy-clayey-loam textural soils, with a slightly alkaline or medium alkaline pH. They prefer non-saline, calcareous soils which are poor in potassium and phosphorus, but the nitrogen content of the soils was found to vary greatly. The soil and plant analysis results were evaluated statistically and correlations were established.
New Floristic Records On Dicotyledones For The Square B9 (Özalp-Van) From Turkey, Fevzi̇ Özgökçe
New Floristic Records On Dicotyledones For The Square B9 (Özalp-Van) From Turkey, Fevzi̇ Özgökçe
Turkish Journal of Botany
No abstract provided.
New Floristic Records On Dicotyledones For The Square B10 (Özalp-Van) From Turkey, Fevzi̇ Özgökçe, Lütfi̇ Behçet
New Floristic Records On Dicotyledones For The Square B10 (Özalp-Van) From Turkey, Fevzi̇ Özgökçe, Lütfi̇ Behçet
Turkish Journal of Botany
No abstract provided.
New Floristic Records For The Square C3 (Seydişehir-Konya, Turkey), Memduh Seri̇n, Murad Aydin Şanda, Fahretti̇n Bati
New Floristic Records For The Square C3 (Seydişehir-Konya, Turkey), Memduh Seri̇n, Murad Aydin Şanda, Fahretti̇n Bati
Turkish Journal of Botany
No abstract provided.
New Floristic Records For The Grid Square B3 Uluborlu - Isparta, Turkey, Gönül Kaynak, Gül Tarimcilar
New Floristic Records For The Grid Square B3 Uluborlu - Isparta, Turkey, Gönül Kaynak, Gül Tarimcilar
Turkish Journal of Botany
No abstract provided.
Insertion Of An Antimicrobial Gene Into Agrobacterium And Its Further Use In Transforming Tobacco, Ekrem Gürel
Insertion Of An Antimicrobial Gene Into Agrobacterium And Its Further Use In Transforming Tobacco, Ekrem Gürel
Turkish Journal of Botany
In the present work, we first describe the transfer of a novel gene, designated 5W, into the LBA4404 Agrobacterium tumefaciens strain using pPCV91 plasmid through a triparental mating system. The 5W gene was recently isolated from macadamia, a native nut tree species of Australia, and has been shown to have an antimicrobial effect against certain fungi in vitro. Secondly, this gene was tranferred into tobacco (Nicotiana tabacum cv. Xhantii) using leaf explants to develop a system which could then be used for transferring this antimicrobial peptide into sunflower cultivars.
Epipelic And Epilithic Algae Of Dağbaşı Lake (Rize-Turkey), Bülent Şahi̇n
Epipelic And Epilithic Algae Of Dağbaşı Lake (Rize-Turkey), Bülent Şahi̇n
Turkish Journal of Botany
Epipelic and epilithic algae of Dağbaşı lake were studied qualitatively between June and September 1988. The algal flora was found to consist of 103 species, 53 belonging to Bacillariophyta, 31 to Chlorophyta, 15 to Cyanophyta and 4 to Euglenophyta.
Testig Growth Of Elodea Nuttallii (Palnch.) H. St. John With Different Culture Media, Hani̇fe Özbay
Testig Growth Of Elodea Nuttallii (Palnch.) H. St. John With Different Culture Media, Hani̇fe Özbay
Turkish Journal of Botany
The Growth rate of Elodea nuttallii (Planch.) H.St.John was tested in different culture media. Effects of snail was also determined on the growth rate of the plant. E. nuttallii grew well in the canal sediment medium. It also grew well in Steinberg Solution No 1, but not in Steinberg Solution No 2 and JIC:sand media. Overall the snail treatment did not significantly affect the growth rate of E. nuttallii in all tested growth media.
The Low Above-Zero Temperature Effect In The Zone Of Roots On Nitrate Reductase Activity In Pea Organs In The Process Of Vegetating, G. G. Vasilieva, N. V. Mironova, A. K. Glyanko
The Low Above-Zero Temperature Effect In The Zone Of Roots On Nitrate Reductase Activity In Pea Organs In The Process Of Vegetating, G. G. Vasilieva, N. V. Mironova, A. K. Glyanko
Turkish Journal of Botany
Experiments with pea (Pisum sativum L.) cv. Marat) in a phytotron chamber showed that the process of nitrate assimilation in pea organs depends on temperature in the zone of the roots and on the phase of development of the plants. The potential of tissues of different organs for nitrate reduction was compared to the amount of nitrates which they accumalated. A decrease in nitrate reductase activity during certain phases of development is assumed to be related to the process of formation and functioning of nodules.
The Moss Flora Of Ankara - Kızılcahamam Soğuksu National Park, Güray Uyar, Barbaros Çeti̇n
The Moss Flora Of Ankara - Kızılcahamam Soğuksu National Park, Güray Uyar, Barbaros Çeti̇n
Turkish Journal of Botany
In the Ankara-Kızılcahamam Soğuksu National Park,116 taxa of bryophytes were identified by the authors. These belong to 20 families and 42 genera of bryophytes. Of these, 32 taxa are new for the A2 grid-square in the system adopted by Henderson.
The Bryophyta Flora Of Giresun Province Centre And Near Vicinity, Turan Özdemi̇r
The Bryophyta Flora Of Giresun Province Centre And Near Vicinity, Turan Özdemi̇r
Turkish Journal of Botany
In this study, 73 taxa were identified by the author. These belong to 28 families and 47 genera of Bryophyta. Of these, 13 taxa (Pogonatum nanum P.Beauv., Encalypta alpina Sm., Tortula norvegica (Web.) Wohl. & Lind., Barbula vinealis Brid., Gymnostomum calcareum Nees & Hornsch., Grimmia donniana Sw., Bryum gemmiparum De Not., Epipterygium tozeri (Grev.) Lind., Pterogonium gracile (Hedw.) Sm., Homalia trichomanoides (Hedw.) B.S.&G., Cratoneuron commutatum (Hedw.) Roth., Scorpiurium circinatum (Brid.) Fleisch. & Loeske, Eurhynchium praelongum var. rigidum Boul.) are new for the A4 grid-square adopted by Henderson & Prentice (1961). In addition, 20 taxa are new records for Giresun province.
Flora Of Mount Musa (Hatay-Turkey), Atabay Düzenli̇, Hali̇l Çakan
Flora Of Mount Musa (Hatay-Turkey), Atabay Düzenli̇, Hali̇l Çakan
Turkish Journal of Botany
The field studies have been carried out to determine the flora of Mount Musa between 1994-1996. Nearly, 1000 plant specimens were collected. After identification of these specimens, total flora has been determinated as 522 taxa at specific and subspecific ranks belonging to 287 genera and 87 families. The largest three families are Fabaceae (67 species), Asteraceae (55 species) and Lamiaceae (45 species). The largest genus is Trifolium L. (14 species) and the second is Vicia L. (11 species). Mount Musa is take part in the Mediterranean phytogeographical region. The phytogeographical spectrums of species are as follows: Mediterranean elements, 213 species …
The Flora Of The Mount Kısır (Kars And Ardahan) And Nearest Environs, Hayretti̇n Ocakverdi̇
The Flora Of The Mount Kısır (Kars And Ardahan) And Nearest Environs, Hayretti̇n Ocakverdi̇
Turkish Journal of Botany
Mount Kısır constitutes the study area; the northern and western parts are within the boundary of the Çıldır district (Ardahan), the southwestern part is within the boundary of Susuz and the eastern and southeastern parts are within the boundary of Arpacay (Kars). This place is the highest part of Northeastern Anatolia (3150 m) and lies within square A9. On Mount Kısır and in its environs, a continental climate prevails. In accordance with the climate, basaltic and chestnut brown soil prevails in the region. The study was carried out in the region in suitable periods between 1996 and 1999. During the …
The Vegetation Of Çimen Mountain (Kahramanmaraş), Ömer Varol, Adem Tatli
The Vegetation Of Çimen Mountain (Kahramanmaraş), Ömer Varol, Adem Tatli
Turkish Journal of Botany
This investigation was carried out between 1995 and 1996 in order to research the vegetation of Çimen Mountain (Kahramanmaraş). The research area is situated at about 20 km to the south-west of Kahramanmaraş. Vegetation studies were carried out according to the Braun-Blanquet method. The authors determined 10 plant associations, all of which are new syntaxa to science, in three different vegetation types. Vegetation tables are given in an appendix.
Two New Varieties And A New Record In Onobrychis From Turkey, Ekrem Aktoklu
Two New Varieties And A New Record In Onobrychis From Turkey, Ekrem Aktoklu
Turkish Journal of Botany
Two new Onobrychis Miller (Fabaceae) varieties are described and illustrated from east Anatolia: O. fallax Freyn & Sint. var. longifolia Aktoklu and O. atropatana Boiss. var. grandiflora Aktoklu. Onobrychis meschetica Grossh. is a new record from Turkey; a full description is given.