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Articles 1 - 30 of 43
Full-Text Articles in Life Sciences
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.
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.
Evaluation Of A Method For The Reassessment Of Air Quality By Lichen Mapping In The City Of İzmir, Turkey, Maja Sommerfeldt, Volker John
Evaluation Of A Method For The Reassessment Of Air Quality By Lichen Mapping In The City Of İzmir, Turkey, Maja Sommerfeldt, Volker John
Turkish Journal of Botany
The occurrence of lichens and air pollution in the city of İzmir were investigated according to VDI-Guideline 3799 Part 1. In all, 45 epiphytic lichen species were found in 1092 releves. Different distribution patterns discriminated in the study area were used to evaluate air quality. A predominant part of the city area is heavily polluted; this pollution decreases in green spaces and in the outer zone of the study area. The best air quality values were determined in the southern and western parts of the city zone. A value of 7.3 for the width of the air quality classes shows …
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 …
Floristical Characteristics Of Berit Dağı (Kahramanmaraş), Bayram Yildiz
Floristical Characteristics Of Berit Dağı (Kahramanmaraş), Bayram Yildiz
Turkish Journal of Botany
In this article, the floristical characteristics of Berit Dağı (Berit Mountain) are given and the vascular plant species growing there are documented. Berit Dağı is situated in the north-west of Kahramanmaraş province and at the south of Anatolian diagonal. It is in the transitional zone of the Irano-Turanian and Mediterranean phytogeographical regions. The research was carried out between 1977 and 1981. Approximately 2500 plant specimens were collected from the area. At the end of the study, 1132 vascular plant species (1165 taxa) belonging to 97 families and 462 genera were identified. Of these, 200 (17.6%) species are endemic to Turkey. …
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.
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 …
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 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.
The Liverwort Flora Of Antarctica (2000), Adnan Erdağ
The Liverwort Flora Of Antarctica (2000), Adnan Erdağ
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 Değirmendere River (Trabzon-Turkey), Hülya Kara, Bülent Şahi̇n
Epipelic And Epilithic Algae Of Değirmendere River (Trabzon-Turkey), Hülya Kara, Bülent Şahi̇n
Turkish Journal of Botany
The algae of Değirmendere River were investigated in the samples collected from different habitats (epipelic, epilithic) in five stations between October 1998 and September 1999. The flora consisted of 74 taxa belonging to Bacillariophyta (52), Chlorophyta (10), Cyanophyta (9) and Euglenophyta (3). Bacillariophyta was dominant in the algal flora. Aulacosira varians Ag. (Coscinodiscaceae), Amphora ovalis Kütz. (Cymbellaceae), Cocconeis placentula var. euglypta (Ehr.) Cleve (Achnanthaceae), Ceratoneis arcus Kütz. (Fragilariaceae), Cymbella minuta Hilse ex Rabh. (Cymbellaceae), Didymosphenia geminata (Lyngb.) M. Schmidt. (Gomphonemaceae), Navicula odiosa Wallace (Naviculaceae), Surirella ovata Kütz. (Surirellaceae) and Synedra ulna (Nitzsch) Ehr. (Fragilariaceae) were the most common taxa in …
The Flora Of Kelkit Valley, Fergan Karaer, Mahmut Kilinç
The Flora Of Kelkit Valley, Fergan Karaer, Mahmut Kilinç
Turkish Journal of Botany
The flora of Kelkit Valley was investigated between 1990 and 1993. In the vegetation period, a total of 2800 plant specimens were collected. At the end of the study, 1316 species and subspecies and 519 genera belonging to 105 families were established. Of these, 132 taxa are endemic to Turkey and the ratio is 10.03%. The rates of taxa which are included in certain phytogeographical regions are as follows: Irano-Turanian 14.75%, Euro-Siberian 12.69% and Mediterranean 11.40%.
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.
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 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 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 …
A New Record For The Moss Flora Of Turkey: Tortella Inflexa (Bruch) Brot., Turan Özdemi̇r
A New Record For The Moss Flora Of Turkey: Tortella Inflexa (Bruch) Brot., Turan Özdemi̇r
Turkish Journal of Botany
Tortella inflexa (Bruch) Brot. is recorded from Turkey for the first time. The specimen is collected from Giresun Province.
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.
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.
Determination Of The Nutrition Contents Of The Wild Plants Used As Vegetables In Upper Çoruh Valley, Ertan Yildirim, Ati̇lla Dursun, Meti̇n Turan
Determination Of The Nutrition Contents Of The Wild Plants Used As Vegetables In Upper Çoruh Valley, Ertan Yildirim, Ati̇lla Dursun, Meti̇n Turan
Turkish Journal of Botany
This study was undertaken in order to investigate wild plant species locally consumed as food in Upper Çoruh Valley. The plant species were collected in the late winter and spring, and their taxonomic identifications were made. The plants identified were Plantago minor L., Polygonum bistorta L., Astrodaucus orientalis L., Camelina rumelica Boehm., Lathyrus tuberosus L., Galium rotundifolium L., Chenopodium album L. and Chenopodium album L. Analyses were carried out to evaluate the nutritional values of the plant parts. The highest dry matter, ascorbic acid, nitrogen, protein, phosphorus and potassium contents were determined to be 20.87 g.100 g^{-1} , 161.25 mg.100 …
A Study On The Past And Present Diatom Flora Of Two Alkaline Lakes, Sabri̇ Kilinç, Erdal Ridvan Sivaci
A Study On The Past And Present Diatom Flora Of Two Alkaline Lakes, Sabri̇ Kilinç, Erdal Ridvan Sivaci
Turkish Journal of Botany
The diatom flora of Lakes Hafik and Tödürge was studied qualitatively. Each lake was sampled monthly during two periods. The first period was between April 1986 and June 1987 in Lake Hafik and between August 1990 and October 1990 in Lake Tödürge. The second period was between December 1999 and July 2000 in both lakes. A total of 94 diatom taxa belonging to 25 genera and 53 diatom taxa belonging to 21 genera were identified in Lakes Hafik and Tödürge respectively. Cymbella Agardh, Navicula Bory and Nitzschia Hassall appeared to have the richest genera in terms of number of species …
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.
Pollen Flora Of Pakistan-Xxxi Capparidaceae, Anjum Perveen, Mohammad Qaiser
Pollen Flora Of Pakistan-Xxxi Capparidaceae, Anjum Perveen, Mohammad Qaiser
Turkish Journal of Botany
The pollen morphology of 14 species belonging to seven genera viz., Cadaba Forssk., Capparis L., Cleome L., Dipterygium Decaisne, Gynandropsis DC., Maerua Forssk., of the family Capparidaceae, was investigated using a light microscope and scanning microscope. The results confirm the eurypalynous nature of the family. However, palynology is significantly helpful at the specific level. Pollen grains usually radially symmetrical, isopolar, sub-prolate to prolate, generally tricolporate, often tetra-colporate. Tectum generally spinulose, or striate-rugulate, or rugulate-reticulate often sub-psilate.
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