Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 30 of 53

Full-Text Articles in Entire DC Network

Changes In Abscisic Acid And Indole-3-Acetic Acid Concentrations In Funalia Trogii (Berk.) Bondartsev & Singer And Phanerochaete Chrysosporium Burds. Me446 Subjected To Salt Stress, Serpi̇l Ünyayar Jan 2002

Changes In Abscisic Acid And Indole-3-Acetic Acid Concentrations In Funalia Trogii (Berk.) Bondartsev & Singer And Phanerochaete Chrysosporium Burds. Me446 Subjected To Salt Stress, Serpi̇l Ünyayar

Turkish Journal of Botany

Variations in abscisic acid (ABA) and indole-3-acetic acid (IAA) concentrations were studied in Funalia trogii (Berk.) Bondartsev & Singer and Phanerochaete chrysosporium Burds. ME446 subjected to salt stress. The levels of ABA and IAA were determined by gas chromatography (GC) and UV-VIS spectrophotometry. The levels of hormones vary in the regulation of growth and in response to stress. It was found that ABA concentrations were higher in the salt stressed groups than in the control groups, whereas IAA concentrations were lower. These results show that, in fungi, ABA concentrations are positively and IAA concentrations negatively correlated with salt stress.


Auxin (Indole-3-Acetic Acid), Gibberellic Acid (Ga_3), Abscisic Acid (Aba) And Cytokinin (Zeatin) Production By Some Species Of Mosses And Lichens, Nuray Ergün, Şaban Fati̇h Topcuoğlu, Ati̇lla Yildiz Jan 2002

Auxin (Indole-3-Acetic Acid), Gibberellic Acid (Ga_3), Abscisic Acid (Aba) And Cytokinin (Zeatin) Production By Some Species Of Mosses And Lichens, Nuray Ergün, Şaban Fati̇h Topcuoğlu, Ati̇lla Yildiz

Turkish Journal of Botany

In this study, the levels of endogenous free, bound and total auxin (Indole-3-acetic acid, IAA), gibberellic acid (GA_3), abscisic acid (ABA) and cytokinin (zeatin) were examined in some species of mosses and lichens. For determination of the levels of these plant growth regulators, spectrophotometry was used. Our findings show that the mosses and lichens used in this study produce the plant growth regulators IAA, GA_3, ABA and zeatin.


Seasonal Variations In The Biomass Of Macro-Algal Communities From The Gulf Of Antalya (North-Eastern Mediterranean), İsmai̇l İbrahi̇m Turna, Ö. Osman Ertan, Mario Cormaci, Giovanni Furnari Jan 2002

Seasonal Variations In The Biomass Of Macro-Algal Communities From The Gulf Of Antalya (North-Eastern Mediterranean), İsmai̇l İbrahi̇m Turna, Ö. Osman Ertan, Mario Cormaci, Giovanni Furnari

Turkish Journal of Botany

In this study, the seasonal variations in the macro-algal biomass in the Gulf of Antalya (north-eastern Mediterranean) were investigated. The seasonal variations of the macro-algal biomass were found to be related to the biology of the abundant species during less favourable seasons. These variations occurred usually as a result of a significant reduction in algal density [Padina pavonica (L.) J.V.Lamour., Dasycladus vermicularis (Scopoli) Krasser, Chondrophycus papillosus (C.Agardh) Garbay & Harper] or loss of major part of their thallus [Cystoseira spp., Liagora distenta (Mertens ex Roth) J.V.Lamour., Liagora viscida (Forssk.) C.Agardh]. The highest values of biomass were found to be in …


A Contribution To The Bryophyte Flora Of Western Turkey: The Bryophyte Flora Of Madran Mountain And The Çine Valley (Aydın, Turkey), Adnan Erdağ Jan 2002

A Contribution To The Bryophyte Flora Of Western Turkey: The Bryophyte Flora Of Madran Mountain And The Çine Valley (Aydın, Turkey), Adnan Erdağ

Turkish Journal of Botany

This study presents a survey on the bryophyte flora of Madran mountain and Çine valley (Aydın, Turkey). One hundred and thirty-three bryophyte species belonging to 35 families and 69 genera were recorded from the area. Phaeoceros laevis (L.) Prosk. is the only member of the hornworts while liverworts are represented by 15 species. The remaining 117 taxa belong to the Bryopsida. Thirty-five species are new records for square C11 according to Henderson's (1961) grid system.


\Alpha -Difluoromethylornithine Inhibits The Growth Of Fungus Macrophomina Phaseoli, Narçin Palavan Ünsal, Ayşin Çotuk, Yeşi̇m Kalaç Martini Jan 2002

\Alpha -Difluoromethylornithine Inhibits The Growth Of Fungus Macrophomina Phaseoli, Narçin Palavan Ünsal, Ayşin Çotuk, Yeşi̇m Kalaç Martini

Turkish Journal of Botany

\alpha -Difluoromethylornithine (DFMO), a specific enzyme activated inhibitor of ornithine decarboxylase (ODC), significantly inhibited the mycelial growth of the fungus Macrophomina phaseoli (Tassi) Goidanich. Putrescine (Put), when added to the nutrient medium at a concentration of 0.25 mM, decreased the inhibitory effect of DFMO. These results suggest that polyamines (PAs) are essential for the growth of fungi and that DFMO is applicable to the alleviation or prevention of crop losses due to phytopathogenic fungi.


Two New Alchemilla L. (Rosaceae) Records For The Flora Of Turkey, Sema Hayirlioğlu Ayaz, Osman Beyazoğlu Jan 2002

Two New Alchemilla L. (Rosaceae) Records For The Flora Of Turkey, Sema Hayirlioğlu Ayaz, Osman Beyazoğlu

Turkish Journal of Botany

Two Alchemilla L. (Rosaceae) species from north-east Anatolia are described as new records for Turkey.


Plant Biotechnology I, Tissue Culture And Its Applications, Kemal Kazan Jan 2002

Plant Biotechnology I, Tissue Culture And Its Applications, Kemal Kazan

Turkish Journal of Botany

No abstract provided.


The Planktonic Diatoms Of Lake Çıldır (Ardahan-Turkey), Aydin Akbulut, Kazim Yildiz Jan 2002

The Planktonic Diatoms Of Lake Çıldır (Ardahan-Turkey), Aydin Akbulut, Kazim Yildiz

Turkish Journal of Botany

This paper describes the planktonic diatom flora of Lake Çıldır. Samples were collected monthly between May 1991 and September 1993 at three different stations. A total of 94 diatom taxa were identified. In the study period, the most dominant and abundant taxa were Cyclotella meneghiniana Kütz., Aulacoseria granulata (Ehrenb.) Simonsen, Melosira varians C.Agardh and Navicula Bory spp. The diatom flora of the lake is rich in species and varieties and is similar to that in other parts of Turkey.


Selected Chemical Constituents And Their Seasonal Variations In Flabellia Petiolata (Turra) Nizam. And Halimeda Tuna (Ellis & Sol.) J.V.Lamour. In The Gulf Of Antalya (North-Eastern Mediterranean), Şengül Bi̇lgi̇n, Ö. Osman Ertan Jan 2002

Selected Chemical Constituents And Their Seasonal Variations In Flabellia Petiolata (Turra) Nizam. And Halimeda Tuna (Ellis & Sol.) J.V.Lamour. In The Gulf Of Antalya (North-Eastern Mediterranean), Şengül Bi̇lgi̇n, Ö. Osman Ertan

Turkish Journal of Botany

Seasonal changes in selected chemical, ecological and morphological characteristics of Flabellia petiolata (Turra) Nizam. and Halimeda tuna (Ellis & Sol.) J.V.Lamour., which are commonly found in the Gulf of Antalya, were studied. Crude protein content of F. petiolata was found to be higher than that of H. tuna, whereas the crude fat contents of the two species were similar. On the other hand, compared to F. petiolata, H. tuna was rich in inorganic material. Both species were observed to be dense on a seasonal basis in the sampling area and they reached their maximum length during summer.


A New Record For The Myxomycetes Flora Of Turkey: Comatricha Pulchella (C.Bab.) Rost. Var. Pulchella, C. Cem Ergül, Başaran Dülger Jan 2002

A New Record For The Myxomycetes Flora Of Turkey: Comatricha Pulchella (C.Bab.) Rost. Var. Pulchella, C. Cem Ergül, Başaran Dülger

Turkish Journal of Botany

Comatricha pulchella (C.Bab.) Rost. var. pulchella is recorded for the first time from Turkey.


A Note On Cheilothela Chloropus (Brid.) Lindb. (Ditrichaceae, Musci) In Turkey, Adnan Erdağ Jan 2002

A Note On Cheilothela Chloropus (Brid.) Lindb. (Ditrichaceae, Musci) In Turkey, Adnan Erdağ

Turkish Journal of Botany

Fruiting specimens of Cheilothela chloropus (Brid.) Lindb. were collected and illustrated for the first time from the southwest of Turkey. A description and the distribution of the species are given to provide a contribution for further studies on Turkish mosses.


The Flora And Vegetation Of Kunduz Forests (Vezirköprü / Samsun), Fazil Özen, Mahmut Kilinç Jan 2002

The Flora And Vegetation Of Kunduz Forests (Vezirköprü / Samsun), Fazil Özen, Mahmut Kilinç

Turkish Journal of Botany

The research area, Kunduz Forests, is located on Kunduz Mountain, which is about 35 km south-west of Vezirköprü (Samsun). This area is in the A5 square in the grid scheme of Davis and is in the Euxine sector of the Euro-Siberian floristic region phytogeographically. The distribution of 306 specific and infraspecific taxa forming the flora of the research area according to floristic regions is as follows: Euro-Siberian 28.43%, Mediterranean 11.44% and Irano-Turanian 4.90%. The percentage of taxa found in more than one floristic region is 55.23%. Twenty-five of the 306 taxa found in the study area are given as new …


Influence Of The Inorganic Carbon Addition On Photosynthesis Of Algae And Some Macrophytes, Meri̇ç Albay, Jan Pokorny Jan 2002

Influence Of The Inorganic Carbon Addition On Photosynthesis Of Algae And Some Macrophytes, Meri̇ç Albay, Jan Pokorny

Turkish Journal of Botany

A two-step experiment was conducted in order to understand whether natural algal communities (fish-pond water) and selected macrophytes (Potamogeton pectinatus L. Elodea nuttallii (Planch.). St.John. and Utricularia L. sp.) + algae were limited by lack of inorganic carbon (IC). First, 0.6 ml 1 M KHCO_3- was added to the water of Vajgar and Ratmirovsky ponds, South Bohemia, and incubated for 180 minutes under 125 µE m^{-2} s^{-1} light. Then light intensity was increased to 150 µE m^{-2} s^{-1} and 0.6 ml 1 M KHCO_3- was added to selected macrophytes + Vajgar pond waters and incubated for 50 and 180 minutes. …


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


New Records Of The Genus Histioneis F.R. Von Stein (Dinophyceae) From Turkish Coastal Waters, Sevi̇m Polat, Tufan Koray Jan 2002

New Records Of The Genus Histioneis F.R. Von Stein (Dinophyceae) From Turkish Coastal Waters, Sevi̇m Polat, Tufan Koray

Turkish Journal of Botany

The dinoflagellate genus Histioneis F.R. von Stein 1883 and six species belonging to this genus are reported for the first time from the coastal waters of Turkey (north-eastern Mediterranean, lat. 36° 06' N - 36° 07' N, long. 33° 28' E - 33°30' E). Descriptions of the species Histioneis depressa J.Schiller, H. expansa L.Rampi, H. para Murray & Whitting, H. marchesonii L.Rampi, H. striata Kof. & J.R.Michener and H. elongata Kof. & J.R.Michener are given.


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.


Flora Of Karagüney Mountain (Kırıkkale), Ali̇ Arslan Dönmez Jan 2002

Flora Of Karagüney Mountain (Kırıkkale), Ali̇ Arslan Dönmez

Turkish Journal of Botany

This paper deals with a floristic study of Karagüney Mountain (Kırıkkale/Turkey). The study was carried out during 1989-1991 and 2500 vascular plant samples were collected. Eight hundred and sixty-eight taxa of 378 genera have been identified. Fabaceae, Asteraceae and Poaceae are the largest families and Astragalus L., Silene L. and Salvia L. are the largest genera in the area. The endemism rate of the area is 13.1%. The classification of the taxa into three main chorological units shows that Irano-Turanian elements are predominant. Threatened categories were proposed for 109 taxa according to IUCN categories.


The Effects Of Gamma Irradiation On The Pollen Size Of Gossypium Hirsutum L., Çi̇ğdem Savaşkan Jan 2002

The Effects Of Gamma Irradiation On The Pollen Size Of Gossypium Hirsutum L., Çi̇ğdem Savaşkan

Turkish Journal of Botany

Gossypium hirsutum L. (cotton) is cultivated widely in the south of Turkey. In this study, seeds of the cotton cultivar Çukurova 1518 were irradiated with gamma at 50, 100, 200, 300 and 400 Gray doses in a Co^{60} source. The size of morphologically normal pollen grains was measured in generation M_1 and found to be 120.35 µm in the control group, while this value was different in the irradiated groups. However, there was no significant difference in the size of pollen grains of normal morphology and shape between the irradiated and control pollens.


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 …


Growth, Proline Accumulation And Ionic Relations Of Tomato (Lycopersicon Esculentum L.) As Influenced By Nacl And Na_2so_4 Salinity, Ali̇ İnal Jan 2002

Growth, Proline Accumulation And Ionic Relations Of Tomato (Lycopersicon Esculentum L.) As Influenced By Nacl And Na_2so_4 Salinity, Ali̇ İnal

Turkish Journal of Botany

Salinity depresses ion activities, decreases the ratios of plant nutrients to Na and Cl ions, and consecutively suppresses plant growth. The objective of the present study was to distinguish the effects of NaCl and Na_2SO_4 salinity on the growth, ionic relations and proline accumulation of tomato plants. Tomato plants were grown for two months. Plant growth was reduced, but proline accumulation was enhanced by salinity. Total N and NO_3-N content of plants were decreased by both NaCl and Na_2SO_4 salinity. Sulphur content was not affected by the salt treatments. Salinity caused nutrient imbalances. The Na and Cl contents of plants …


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.


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 …


The Flora Of Eğerli Mountain (Amasya-Turkey), Arzu Cansaran Jan 2002

The Flora Of Eğerli Mountain (Amasya-Turkey), Arzu Cansaran

Turkish Journal of Botany

The floristical characteristics of Eğerli Mountain (Eğerli Dağı) are given and the vascular plant species growing there are documented. The research was carried out between 1996 and 1998. Approximately 2000 plant specimens were collected from the area. At the end of the study, 650 taxa (at specific and infraspecific ranks) belonging to 70 families and 298 genera were identified. Fifty-five taxa were defined as new records for the A5 square. The largest family was found to be Asteraceae (78 species) and the second largest one was Fabaceae (77 species). The largest genera were Astragalus L. (23 species), Silene L. and …


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.


An Experimental Approach To Examining The Effect Of Water Depth And Lemna Minor L. On Algal Growth, Hani̇fe Özbay Jan 2002

An Experimental Approach To Examining The Effect Of Water Depth And Lemna Minor L. On Algal Growth, Hani̇fe Özbay

Turkish Journal of Botany

In order to test how both water depth and Lemna minor L. affect the growth rate of algae, two different experiments were designed. In the first experiment, Scenedesmus quadricauda (Turp.) Breb. was cultured in sterilized Steinberg solution with reduced N and P levels in plastic containers at depths of 5, 10, 15 and 20cm. At the end of the experiment, differences in algal growth with depth were found to be significant between a) 5 cm with 10 cm, 15 cm and 20 cm, and b) 10 cm with 15 and 20 cm depth treatments (p


Phytoplankton Distribution, Diversity And Nutrients At The North-Eastern Mediterranean Coast Of Turkey (Karataş-Adana), Sevi̇m Polat, Oya Işik Jan 2002

Phytoplankton Distribution, Diversity And Nutrients At The North-Eastern Mediterranean Coast Of Turkey (Karataş-Adana), Sevi̇m Polat, Oya Işik

Turkish Journal of Botany

Seasonal changes in phytoplankton composition and phytoplankton abundance and physico-chemical factors affecting these parameters were investigated in this study. Quantitative and qualitative phytoplankton and nutrient analysis were carried out between 1998 and 1999 at 12 sampling stations located from inshore to offshore of Karataş, situated in the north-eastern Mediterranean. A total of 135 taxa were determined, belonging to four algae classes: Cyanophyceae, Bacillariophyceae, Dinophyceae and Dictyochophyceae. Bacillariophyceae appeared to be the dominant group in terms of total species number and cell numbers during the research period. The number of phytoplankton species was high in winter and quite low in summer. …


Effect Of Indole-3-Butyric Acid On In Vitro Root Development In Lentil (Lens Culinaris Medik.), Khalid Mahmood Khawar, Sebahatti̇n Özcan Jan 2002

Effect Of Indole-3-Butyric Acid On In Vitro Root Development In Lentil (Lens Culinaris Medik.), Khalid Mahmood Khawar, Sebahatti̇n Özcan

Turkish Journal of Botany

Lentil is an important crop of the family Leguminosae and is notoriously recalcitrant to rooting in vitro. Shoots of cultivar \"Ali Dayı\" of lentil obtained after culturing seeds for 10 days on MS medium were isolated and rooted on MS medium containing indole-3-butyric acid (IBA) at concentrations of 0.25, 0.5, 1.0 and 2.0 mg/l. The primary response was obtained after 4 weeks; 0.25 mg/l IBA gave the best results, with a rooting percentage of 25%, mean number of 7.87 roots along with mean root length of 7.13 cm. However, all other concentrations of IBA failed to induce roots.