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Articles 1531 - 1560 of 1739

Full-Text Articles in Botany

A Study On The Epiphytic Algae Of The Nilüfer Stream (Bursa), Şükran Dere, Di̇dem Karacaoğlu, Nurhayat Dalkiran Jan 2002

A Study On The Epiphytic Algae Of The Nilüfer Stream (Bursa), Şükran Dere, Di̇dem Karacaoğlu, Nurhayat Dalkiran

Turkish Journal of Botany

In our study, water samples were taken monthly between August 1997 and June 1998 from six selected stations in the region, from the source of the Nilüfer stream to the point where it joins the Marmara Sea. Temperature (Cº), pH, total dissolved substance (TDS), conductivity (EC), dissolved oxygen (DO) and biochemical oxygen demand (BOD5) values of the samples were measured. The epiphytic algal flora, and the population density and the abundance degree of species were determined. In the community of epiphytic algae, members of Bacillariophyta were dominant and Encyonema minutum (Hilse ex Rabh.) D.G.Mann, (Cymbellaceae), Achnanthidium minutissimum (Kütz.) Czarn. (Achnanthaceae), …


The Flora Of Upper Ceyhan Valley (Kahramanmaraş/Turkey), Adem Tatli, Hasan Akan, A. Zafer Tel, Cemi̇l Kara Jan 2002

The Flora Of Upper Ceyhan Valley (Kahramanmaraş/Turkey), Adem Tatli, Hasan Akan, A. Zafer Tel, Cemi̇l Kara

Turkish Journal of Botany

This investigation was carried out between 1994 and 1995 in order to determine the flora of Upper Ceyhan Valley. The research area is situated in the province of Kahramanmaraş and within C6 of the grid system. In the area, 412 taxa belonging to 68 families and 262 genera were determined. Twenty-eight (6.7%) taxa are endemics for Turkey. In the distribution of the taxa according to the floristic regions, Mediterranean elements with a rate of 23.5% are the most common. Irano-Turanian elements with a rate of 17.2% and Euro-Siberian elements with a rate of 3.4% were found. The families which have …


Perilla: A New Genus For Turkey, Ali̇ Arslan Dönmez Jan 2002

Perilla: A New Genus For Turkey, Ali̇ Arslan Dönmez

Turkish Journal of Botany

Perilla frutescens (L.) Britton (Labiatae), recently collected in Artvin, is a new record for the flora of Turkey. An illustration and description are given.


Macrofungi Of Ağrı Province, Kenan Demi̇rel, Yusuf Uzun, Abdullah Kaya Jan 2002

Macrofungi Of Ağrı Province, Kenan Demi̇rel, Yusuf Uzun, Abdullah Kaya

Turkish Journal of Botany

Macrofungi were collected during field trips in the Ağrı district between 1997 and 2000. At the end of field and laboratory studies, 45 taxa belonging to 3 classes and 18 families were identified. Three of these, Pluteus ephebeus (Fr.:Fr.) Gill. (Pluteaceae), Coprinus auricomus Pat. (Coprinaceae) and Inocybe tigrina Heim. (Cortinariaceae), are new records for the mycoflora of Turkey.


Flora Of Tuzaklı, Otluk, Gidefi Mountains And Surroundings (Akseki), Ahmet Duran Jan 2002

Flora Of Tuzaklı, Otluk, Gidefi Mountains And Surroundings (Akseki), Ahmet Duran

Turkish Journal of Botany

The natural and cultivated plants of Tuzaklı, Otluk, Gidefi mountains and their surroundings were studied between 1994 and 1997; 2486 herbarium specimens belonging to 1023 taxa, 484 genera and 98 families were collected and identified from the areas. Sixty-one taxa are cultivated and the rest are native plants. The phytogeographic elements are represented in the study area as follows: Mediterranean 360 (37.4%), Irano-Turanian 86 (8.9%) and Euro-Siberian 35 (3.6%). The phytogeographic regions of 481 (50%) taxa are either multi-regional or unknown. Phytogeographic regions are recommended for 12 taxa, of which phytogeographic regions have not been previously suggested. The life forms …


A New And Interesting Ascomycete Genus (Pithya Fuckel) Record For The Fungi Flora Of Turkey, Hasan Hüseyi̇n Doğan, Mustafa Işiloğlu Jan 2002

A New And Interesting Ascomycete Genus (Pithya Fuckel) Record For The Fungi Flora Of Turkey, Hasan Hüseyi̇n Doğan, Mustafa Işiloğlu

Turkish Journal of Botany

An ascomycetous genus Pithya Fuckel (Sarcosyphaceae) was recorded for the first time from Turkey.


A New Record For The Flora Of Turkey: Physalis Philadelphica Lam. Var. Immaculata Waterf. (Solanaceae), Beki̇r Bükün, F. Nezi̇hi̇ Uygur, Si̇bel Uygur, Necaatti̇n Türkmen, Atabay Düzenli̇ Jan 2002

A New Record For The Flora Of Turkey: Physalis Philadelphica Lam. Var. Immaculata Waterf. (Solanaceae), Beki̇r Bükün, F. Nezi̇hi̇ Uygur, Si̇bel Uygur, Necaatti̇n Türkmen, Atabay Düzenli̇

Turkish Journal of Botany

A new species, Physalis philadelphica Lam. var. immaculata Waterf. (Solanaceae) is reported for the first time for the flora of Turkey


Comparison Of Soil Fungi Flora In Burnt And Unburnt Forest Soils In The Vicinity Of Kargıcak (Alanya, Turkey), Ayşe Di̇lek Azaz, Osman Pekel Jan 2002

Comparison Of Soil Fungi Flora In Burnt And Unburnt Forest Soils In The Vicinity Of Kargıcak (Alanya, Turkey), Ayşe Di̇lek Azaz, Osman Pekel

Turkish Journal of Botany

Out of the 50 soil samples taken from burnt forest land in the vicinity of the village of Kargıcak in Alanya and from the adjacent normal forest soils by the Soil Dilution Plate Method 84 different species and 12 sterile microfungi taxa were obtained. Seventy-eight of them belong to Hyphomycetes, five to Mucorales and one to Coelomycetes. The richest taxa were Penicillium (34 species), Aspergillus (16 species) and Cladosporium (5 species). As a result of quantitative analysis, it was determined that there was average of 43,780 propagules of microfungi in a bulk of fresh burnt forest soil equivalent to 1 …


Nineteen New Records From Sarıyar Dam Reservoir Phytoplankton For Turkish Freshwater Algae, Tahi̇r Atici Jan 2002

Nineteen New Records From Sarıyar Dam Reservoir Phytoplankton For Turkish Freshwater Algae, Tahi̇r Atici

Turkish Journal of Botany

Nineteen new records of Turkish freshwater algae were determined in a study of the phytoplankton from Sarıyar dam reservoir. One of these species was from the Cyanobacteria, 14 were from the Chlorophyta, three were from the Euglenophyta and one was from the Heterokontophyta.


A New Generic Records For Turkey, Lütfi̇ Behçet, Murat Ünal Jan 2002

A New Generic Records For Turkey, Lütfi̇ Behçet, Murat Ünal

Turkish Journal of Botany

The monotypic Clastopus Bunge ex Boiss. (Cruciferae) is recorded for the first time from south-east Turkey. The diagnostic characters of C. vestitus (Desv.) Boiss. are described and its ecology and conservation discussed.


The Origin Of The 'Wild Orchards' Of Central Anatolia, Henk Woldring, Rene Cappers Jan 2001

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, …


Pollen Flora Of Pakistan - Xxviii: Resedaceae, Anjum Perveen, Mohammad Qaiser Jan 2001

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.


Heavy Metal Accumulation And Detoxification Mechanisms In Plants, Abdul R. Memon, Di̇ğdem Aktoprakligi̇l, Ayli̇n Özdemi̇r, Anastassiia Vertii Jan 2001

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 …


A Study On The Autecology Of Reseda Lutea L. (Resedaceae) Distributed In Western Anatolia, Yunus Doğan Jan 2001

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 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 Jan 2001

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.


Two New Varieties And A New Record In Onobrychis From Turkey, Ekrem Aktoklu Jan 2001

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.


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 Jan 2001

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 Liverwort Flora Of Antarctica (2000), Adnan Erdağ Jan 2001

The Liverwort Flora Of Antarctica (2000), Adnan Erdağ

Turkish Journal of Botany

No abstract provided.


The Flora Of Kelkit Valley, Fergan Karaer, Mahmut Kilinç Jan 2001

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%.


Evaluation Of A Method For The Reassessment Of Air Quality By Lichen Mapping In The City Of İzmir, Turkey, Maja Sommerfeldt, Volker John Jan 2001

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 …


New Floristic Records On Dicotyledones For The Square B10 (Özalp-Van) From Turkey, Fevzi̇ Özgökçe, Lütfi̇ Behçet Jan 2001

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 Jan 2001

New Floristic Records For The Square C3 (Seydişehir-Konya, Turkey), Memduh Seri̇n, Murad Aydin Şanda, Fahretti̇n Bati

Turkish Journal of Botany

No abstract provided.


Insertion Of An Antimicrobial Gene Into Agrobacterium And Its Further Use In Transforming Tobacco, Ekrem Gürel Jan 2001

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.


The Moss Flora Of Ankara - Kızılcahamam Soğuksu National Park, Güray Uyar, Barbaros Çeti̇n Jan 2001

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.


Flora Of Mount Musa (Hatay-Turkey), Atabay Düzenli̇, Hali̇l Çakan Jan 2001

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 Jan 2001

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 …


Pollen Flora Of Pakistan -Xxvii Nyctaginaceae, Anjum Perveen, Mohammad Qaiser Jan 2001

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 Jan 2001

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.


The Effect Of Glycinebetaine On The Heat Stability Of Photosynthetic Reactions In Thylakoid Membranes, Yagut M. Allakhverdieva, Mahir D. Mamedov, Ralphreed A. Gasanov Jan 2001

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.


A New Record From Turkey: Ranunculus Bulbilliferus Boiss. Et Hoh., Lütfi̇ Behçet Jan 2001

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.