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- New records (2)
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Articles 61 - 83 of 83
Full-Text Articles in Life Sciences
A Study On The Epipelic And Epilithic Algaeof Sana River (Trabzon/Turkey), Saadet Kolayli, Arif Baysal, Bülent Şahi̇n
A Study On The Epipelic And Epilithic Algaeof Sana River (Trabzon/Turkey), Saadet Kolayli, Arif Baysal, Bülent Şahi̇n
Turkish Journal of Botany
The epipelic and epilithic algae of the Sana river, were investigated during the period January 1995 to December 1995. Sity taxa belonging to the Bacillariphyta, Chlorophyta, Cyanophyta and Euglenopnyta divisions were identified. Melosira varians Ag. (Coscinodiscaceae), Cocconeis placentula var. euglypta (Ehr.) Cleve (Achnanthaceae), Cymbella minuta Hilse ex Rabh. (Cymbellaceae), Navicula cryptocephala Kütz. and N. cryptocephala var. veneta Kütz. Grun. (Naviculaceae), were abundant among epipelic algae. Of the epilithic algae, it was observed that Concconeis placentula var. euglypta, Cymbella mi-nuta and Didymosphenia geminata (Lyng.) M. S. (Naviculaceae) were abundant.
A Study On The Benthic Algae Of Uzungöl (Trabzon), Bülent Şahi̇n
A Study On The Benthic Algae Of Uzungöl (Trabzon), Bülent Şahi̇n
Turkish Journal of Botany
The composition of the benthic algal communities and seasonal changes in the densities of the epipelic algae of Uzungöl Lake from April, 1991, to March, 1993, were studied. While the maximum density of the epipelic community was found to be 131111 cells/cm 2 at station I in April, 1991 the maximum density at station II in November, 1991, was 64581 cells/cm 2 . Bacillariophyta was dominant in the benthic algal population. The main epipelic diatoms were Amphora ovalis Kütz. (Cym-bellaceae), Ceratoneis arcus Kütz. (Fragilariaceae), Cymbella minuta Hilse ex Rabh. (Cymbellaceae), Navicula cryptocephala var. veneta (Kütz.) and Grun. and N. radiosa …
Phenotypic Plasticity In Turkish Commelina Communis L.(Commelinaceae) Populations, Hamdi Güray Kutbay, Fevzi Uçkan
Phenotypic Plasticity In Turkish Commelina Communis L.(Commelinaceae) Populations, Hamdi Güray Kutbay, Fevzi Uçkan
Turkish Journal of Botany
Phenotypic plasticity was investigated in Commelina communis L. ( Commelinaceae), which is a perennial herb native to temperate Asia (China) and widely naturalised in the central and eastern Black Sea regions were investiguted C. communis has a relatively high ecological tolerance with respect to climatic and soil factors. It was found that the shoot length, leaf width, number of branches, dead leaves and flowers, root:shoot ratio, total -flower- and root biomasses, flower and root ni-trogen and RE 1 and RE 2 varied significantly in among the three populations. In addition, there were statistically important correlations between reproductive effort (RE) values …
Three Alien Species New To The Flora Of Turkey, Andrew J. Byfield, Asuman Baytop
Three Alien Species New To The Flora Of Turkey, Andrew J. Byfield, Asuman Baytop
Turkish Journal of Botany
Sporobolus fertilis (Steud.) W.D. Clayton (Gramineae) , Physalis pubescens L. (Solanaceae) and Ambrosia elatior L. (Compositae ) are added to the flora of Turkey following the collection in August 1995 of three specimens from Northeast Anatolia where well-established populations now exist. They are housed at the Herbarium of the Faculty of Pharmacy of İstanbul University (nos. 69298, 69309, 69357). Observations on the alien plants of the cited area are appended.
New Floristic Records For The Grid Square C_3(Akseki-Antalya-Turkey), Ahmet Duran, Hayri Duman
New Floristic Records For The Grid Square C_3(Akseki-Antalya-Turkey), Ahmet Duran, Hayri Duman
Turkish Journal of Botany
No abstract provided.
Effect Of Salt Stress And Synthetic Hormone Polystimuline K Onthe Photosynthetic Activity Of Cotton ( Gossypium Hirsutum), Rena A. Ganieva, Surhay R. Allahverdiyev, Nilufar B. Guseinova, Halil I. Kavakli, Saeedeh Nafisi
Effect Of Salt Stress And Synthetic Hormone Polystimuline K Onthe Photosynthetic Activity Of Cotton ( Gossypium Hirsutum), Rena A. Ganieva, Surhay R. Allahverdiyev, Nilufar B. Guseinova, Halil I. Kavakli, Saeedeh Nafisi
Turkish Journal of Botany
The effects of Polystimuline K (PS-K), as a cytokinin analogue, on delayed light component state (DF), intermittent fluorescence (IF) and chlorophyll (Chl) a/b ratio was investigated in the leaves of different genotypes of cotton ( Gossypium hirsutum L.) under salt stress (155 mM Na Cl) for different periods of time. It was shown that in the early perioid of salt stress, DF and IF amplitudes are decreased, which is indicative of a Photosystem II (PS II) activity decrease. It is possibly related to the damage of chlorophyll in the PS II donor site and the decrease of Chl b molecules …
The Effect Of Storage Environment On Seed Survival And The Accumulationof Chromosomal Aberrations In Pea Landraces And Cultivars(Pisum Sativum L.), H. Özkan Si̇vri̇tepe, Anna M. Dourado
The Effect Of Storage Environment On Seed Survival And The Accumulationof Chromosomal Aberrations In Pea Landraces And Cultivars(Pisum Sativum L.), H. Özkan Si̇vri̇tepe, Anna M. Dourado
Turkish Journal of Botany
The relationship between loss of seed viability and the accumulation of chromosomal aberrations was investigated in both landraces and cultivars of the pea ( Pisum sativum L.). It was shown here, for the first time with pea landraces, that loss of seed viability is associated with an increase in the frequency of chromosomal abberrations, and that even small losses of viability result in some chromosomal damage in the seeds of pea landraces as well as in the seeds of pea cultivars. In addition, for a given loss of viability the frequency of chromosomal aberrations in either low or high moisture …
Plant Regeneration From Unfertilized Ovaries Of Sugar Beet ( Beta Vulgaris L.)Cultured In Vitro, Ekrem Gürel, Songül Gürel
Plant Regeneration From Unfertilized Ovaries Of Sugar Beet ( Beta Vulgaris L.)Cultured In Vitro, Ekrem Gürel, Songül Gürel
Turkish Journal of Botany
A. method is described for plant regeneration from unfertilized ovaries isolated from a diploid male sterile sugar beet ( Beta vulgaris L.) breeding line that was developed at the Sugar Institute, Ankara, Turkey. Ovary explants were cultured on Murashige & Skoog (MS) medium containing 2.0 mg/l benzylaminopurine (BAP). Two treatments were tested by incubating all of the explants in darkness for 15 days, and then transferring one half to light and keeping the other half in darkness throughout the culture. Callus formation occurred in both treatments more or less at similar rates: however, there was a significant difference between the …
The Algae Flora Of Aksu Stream (Isparta -Turkey), Ö. Osman Ertan, Arzu Morkoyunlu
The Algae Flora Of Aksu Stream (Isparta -Turkey), Ö. Osman Ertan, Arzu Morkoyunlu
Turkish Journal of Botany
The algal flora at 4 stations chosen on Aksu Stream were investigated between September 1993 and August 1994. The flora consisted of 73 taxa belonging to the Bacillariophyta, Chlorophyta, Cyanophyta and Euglenophyta divisions. The species of Navicula Broy., Nitzschia Hassall, SurirellaTurpin, Amphora Ehr., Cymbella Agardh, Concconeis Ehr., Fragilaria Lyngbye and Synedra ulana (Nitz.) Ehr. were found to be widespread. Apart from members of Bacillariophyta, Oscillatoria limosa (Roth.). C.A.A.gardh., Oscillatoria formosa Broy. and Merismopedia punctata Meyen ( Cyanophyta) were observed to be abundant and frequent, in the year when the research was carried out. The members of other divisions were determined …
New Floristic Records For C6 Grid Square, Ömer Varol, Cemil Kara, Ahmet Ilçim
New Floristic Records For C6 Grid Square, Ömer Varol, Cemil Kara, Ahmet Ilçim
Turkish Journal of Botany
No abstract provided.
Interactive Effects Of Vernalization, Day Length And Light Intensity On The Number Of Leaves And Flag Leaf Area In Some Wheat Cultivars, Yasemin Ekmekçi̇, Serpil Terzi̇oğlu
Interactive Effects Of Vernalization, Day Length And Light Intensity On The Number Of Leaves And Flag Leaf Area In Some Wheat Cultivars, Yasemin Ekmekçi̇, Serpil Terzi̇oğlu
Turkish Journal of Botany
The interactive effects of vernalization, day length and light intensity on the number of leaves and flag leaf area on the main shoot of five bread wheat ( Triticum aestivum L.) cultivars (Çukurova-86, Atay-85, Lancer, Haymana-79 and Bezostaya-1) each with different biological characters, were investigated. The research was carried out in four independent experiments which were the combinations of two different day lengths (14 and 18 hour day -1 ) and light intensities (13500 and 33750 lux) and vernalization periods. Vernalization treatment was applied for 0, 15, 30, 45 and 60 days at 2±1°C in a dark, cold room at …
Vegetation Mosaic Around The First Center Of Tourism Development In The Uludağ Mountain, Bursa-Turkey, Gürcan Güleryüz, Hülya Arslan, Mustafa Gökçeoğlu, Helmut Rehder
Vegetation Mosaic Around The First Center Of Tourism Development In The Uludağ Mountain, Bursa-Turkey, Gürcan Güleryüz, Hülya Arslan, Mustafa Gökçeoğlu, Helmut Rehder
Turkish Journal of Botany
In this study, the vegetation mosaic is determined by aerial photography and Geographical Information Systems (GIS) techniques around the first center of tourism development in the Uludağ Mountain. The cover of plant communities and vegetation types is calculated in both absolute values (ha) and as percentage (%) of the total research area. Dwarf shrub communities ( Vaccinium myrtillus Juniperus communis, Juniperus communis and Astragalus angustifoliis comm.) are dominant with a cover of 53%. There ore some environmental problems caused by misuse of the area. The ruderal formation is dominant on the disturbed lands. It is widespread around the hotels, at …
An Autecological Study On The Vitex Agnus-Castus L. (Verbenaceae)Distributed In West Anatolia, Yunus Doğan, Hasan Hüseyin Mert
An Autecological Study On The Vitex Agnus-Castus L. (Verbenaceae)Distributed In West Anatolia, Yunus Doğan, Hasan Hüseyin Mert
Turkish Journal of Botany
This study covers the investigation of the soil-plant relations of Vitex agnus-castus L. (Verbenaceae), a typical element of Mediteranean macchia vegetation. Soils collected from 38 different localitis in West Anatolia were analysed together with the V. agnus-castus plants from the same localities. This plant was observed to generally prefer loamy-textured, neutral and slightly alka-line soils, poor in calcium carbonate, containing varying amounts of organic matter, being rich or very rich in nitrogen, rich in phos-phorus and deficient in potassium. They grow on nonsaline soils. The relations between the results of soil and plant analysis were tested statistically, and correlation coefficient …
Some Macrofungi Species Of European Part Of Turkey, Georgi Stojchev, Ahmet Asan, Fahrettin Güci̇n
Some Macrofungi Species Of European Part Of Turkey, Georgi Stojchev, Ahmet Asan, Fahrettin Güci̇n
Turkish Journal of Botany
This study aims to determine macrofungi species of Thrace, the European part of Turkey. Samples were collected between the years 1985 and 1997. A total of 67 species were identified and are listed here in.
New Records For The Fungal Flora Of Turkey, Kenan Demi̇rel
New Records For The Fungal Flora Of Turkey, Kenan Demi̇rel
Turkish Journal of Botany
The macrofungi species Ganoderma carnosum Pat. (Ganodermataceae) , Hygrophorus agathosmus Fr.:Fr. (Hygrophoraceae), Marasmius scorodonius (Fr.:Fr.) Fr. (Tricholomataceae) and Lentinellus cochleatus (Pers.:Fr.) Karst. (Auriscalpiaceae) have been recorded for the first time from Turkey.
A New Aquatic Liverwort For The Flora Of Turkey, İsa Gökler, Veysel Aysel
A New Aquatic Liverwort For The Flora Of Turkey, İsa Gökler, Veysel Aysel
Turkish Journal of Botany
One of the aquatic liverworts namely, Riccia fluitans L. belonging to the class Marchantiopsida (Hepaticae) of the division Bryophyta is recorded for the first time from Turkey. The species was collected from Lake Kazan near Selçuk in İzmir.
The Effects Of Different Sucrose, Agar And Ph Levels On In Vitro Shoot Production Of Almond ( Amygdalus Communis L.), Songül Gürel, Yücel Gülşen
The Effects Of Different Sucrose, Agar And Ph Levels On In Vitro Shoot Production Of Almond ( Amygdalus Communis L.), Songül Gürel, Yücel Gülşen
Turkish Journal of Botany
In this study the possibilities of in vitro vegatitve propagation of almond ( Amygdalus communis L.) cv. Texas and cv. Nonpareil by shoot-tip culture were investigated. Different levels of sucrose, agar and pH were tested and shoot proliferation, shoot development and growth were observed during three successive stages, namely initiation, transplantation and multiplication. During the initiation stage, proliferation was achieved only with 5 and 6% sucrose and the best explant development occured with 0.5% agar and pH 5.5. During the second stage, again 5 and 6% sucrose and pH 5.5 gave the best results with respect to shoot production and …
The Effects Of Iba And Bap On In Vitro Shoot Production Of Almond(Amygdalus Communis L.), Songül Gürel, Yücel Gülşen
The Effects Of Iba And Bap On In Vitro Shoot Production Of Almond(Amygdalus Communis L.), Songül Gürel, Yücel Gülşen
Turkish Journal of Botany
In this study the possibilities of in vitro vegatitive propagation of almond ( Amygdalus communis L.) cv. Texas and cv. Nonpareil by shoot-tip culture were investigated. Different levels of IBA (0.0, 0.1 and 0.5 mg/l) and BAP (0.0, 0.5, 1.0, 2.0 and 3.0 mg/l) were tested by observing shoot development and growth during three successive stages, namely initiation, transplantation and multiplication. During the initiation stage, hormone-free medium or medium with low IBA (0.1 mg/l) only seemed favourable for shoot growth. During both the transplantation and multiplication stages, the combination of 0.1 mg/l IBA and 1.0 mg/l BAP was found to …
Development Of An Efficient Plant Regeneration System In Sunflower(Helianthus Annuus L.), Ekrem Gürel, Kemal Kazan
Development Of An Efficient Plant Regeneration System In Sunflower(Helianthus Annuus L.), Ekrem Gürel, Kemal Kazan
Turkish Journal of Botany
With the aim of developing an efficient plant regeneration system from cells or tissues of sunflower ( Helianthus annuus L.), we compared several regeneration protocols using different explant types and hormonal combinations. Somatic embryogenesis could be induced on cotyledon explants, especially from the basal (proximal) portion of the cotyledons, but genotypic vairation appeared to be the most critical factor for both somatic embryo and root production. Such a variation was more prominent when 10 different sunflower cultivars were compared for shoot production from shoot-tip explants. Further refinement of the culture conditions may be neceassary to improve the efficiency of somatic …
Lichens Of The Thrace Region Of Turkey, A. Özdemir Türk, Hüseyin Güner
Lichens Of The Thrace Region Of Turkey, A. Özdemir Türk, Hüseyin Güner
Turkish Journal of Botany
This paper gives the distribution of lichens in the Thrace region determined in this study and in nine previous studies as well. The genus Placidiopsis ( Verrucariaceae) is recorded for the first time in Turkey and thirty-three of the species are recorded for the first time for the region. With the completion of this study, the number of known lichen species in the region reaches 201.
Liverworts ( Marchantiopsida) Of The Altindere Valley National Park, İsa Gökler
Liverworts ( Marchantiopsida) Of The Altindere Valley National Park, İsa Gökler
Turkish Journal of Botany
This investigation covers studies undertaken on the liverworts of the Altındere Valley National Park, including the historical Sumela Meryemana Monastery located in the town of Maçka, province of Trabzon. As a result, 33 species belonging to 16 families of the class Marchantiopsida (Hepaticae) of the division Bryophyta have been identified. Of these, Porella arboris-vitae (With.) Grolle, P. cordaeana (Hüb.) Moore, P. obtusata (Tayl.) Trev. and Lejeunea lamacerina (Steph.) Schiffn. are reported for the first time from the A4 square of Turkey.
New Records Of Vascular Plants For Northern Mt. Strandzha (Se Bulgaria), Chavdar Gussev, Cvetomir Denchev, Jordanka Koeva, Dolja Pavlova, Dimitar Dimitrov
New Records Of Vascular Plants For Northern Mt. Strandzha (Se Bulgaria), Chavdar Gussev, Cvetomir Denchev, Jordanka Koeva, Dolja Pavlova, Dimitar Dimitrov
Turkish Journal of Botany
This study comprises new chorological data of 54 Bulgarian vascular plants. The occurrence of Glyceria nemoralis (Uechtr.) Uechtr. & Koern. in Bulgaria is confirmed. Thirty-four taxa are new for the Bulgarian region of Mt. Strandzha. The occurrence of 20 species in the Bulgarian region of Mt. Strandzha is confirmed. In addition, the distribution of Knautia degenii Borbás ex Form. in Bulgaria is briefly discussed.
Anatomy Of The Barks Of Rhus Coriaria L., Ayşegül Güvenç
Anatomy Of The Barks Of Rhus Coriaria L., Ayşegül Güvenç
Turkish Journal of Botany
The genus Rhus L. ( Anacardiacece) has some 150 species all over the world and is represented by Rhus coriaria L. in Turkey. In this study, the anatomy of the cortex of this species was investigated. Anatomical study of the branch cortex revealed taht large secretory canals containing essential oil occur in one row around the cortex. These canals are supported by a group of sclerenchyma cells. These characteristic elements were inllustrated.