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Articles 1621 - 1641 of 1641
Full-Text Articles in Life Sciences
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 …
Effects Of Salt Stress Of The Respiratory Components Of Some Plants, N.A. Kasumov, Z.I. Abbasova, G. Gündüz
Effects Of Salt Stress Of The Respiratory Components Of Some Plants, N.A. Kasumov, Z.I. Abbasova, G. Gündüz
Turkish Journal of Botany
Oxygen absorption, kinetic regularities of free radical oxidation and anti-oxidation activity were studied in roots and isolated mitochondria for various groups of plants under salt stress of NaCl, Na 2 SO 4 and Na 2 CO 3 . The results show that spearation of oxidation and phosphorylation obviously stimulates the oxygen absorption by plants under salt strees. Therefore, the anti-oxidation activity of roots decreases abruptly, resulting in an uncontrolled acceleration of free radical processes. The obtained data is a definite contribution to the concept concerning the toxic effect of salt on plants.
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.
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.
Phytosociological And Ecological Structure Of Fraxinus Angustifoliasubsp. Oxycarpa Forests In The Central Black Sea Region, Hamdi Güray Kutbay, Mahmut Kilinç, Ali Kandemi̇r
Phytosociological And Ecological Structure Of Fraxinus Angustifoliasubsp. Oxycarpa Forests In The Central Black Sea Region, Hamdi Güray Kutbay, Mahmut Kilinç, Ali Kandemi̇r
Turkish Journal of Botany
Fraxinus angustifolia Vahl. subsp. oxycarpa (Bieb. ex Willd). Franco & Rocha Afonso forests formed pure stands along the alluvial delta of the Central Black Sea Region. These forests represent hygrophyllous azonal formations. This species usually forms mixed stands with other deciduous species in other regions. In this study the phytosociological structure and soil characteristics of F. angustifolia subsp. oxycarpa forests were investigated. Nutrient concentrations in the leaves of the dominant species F. angustifolia subsp. oxycarpa were also studied during mid-growing season and senescence. It was determined that nutrient concentrations tended to decrease during senescence.
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.
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 …
Comparative Effects Of Kinetin, Benzyladenine, And Gibberellic Acid On Abscisic Acid Inhibited Seed Germination And Seedling Growth Of Red Pine And Arbor Vitae, Kudret Kabar
Turkish Journal of Botany
The effects of kinetin, benzyladenine (BA), and gibberellic acid (GA 3 ) on abscisic acid (ABA) inhibition of seed germination and seedling growth of red pine (Pinus brutia Ten.) and arbor vitae (Thuja orientalis L.) were studied. For this purpose, the seeds of these two species were germinated in Petri dishes containing ABA and the mixtures of its with kinetin, BA, and GA 3 alone or in combination at 20ºC for 12 or 15 days for arbor vitae and red pine, respectively. The inhibitory effect of ABA on percentages of the seed germination and hypocotyl emergence, the time course of …
Ten New Records Of Macrofungi For Turkey, Ertuğrul Sesli̇
Ten New Records Of Macrofungi For Turkey, Ertuğrul Sesli̇
Turkish Journal of Botany
Spathularia flavida Pers.: Fr., Tremella foliacea (Pers.: S.F. Gray) Pers., Sebacina incrustans (Fr.) Tul., Albatrellus cristatus (Pers.: Fr.) Kotl. & Pouz., Hygrocybe sciophana (Fr.) Karst., Hygrophorus ligatus Fr., Hgrophorus unicolor Gröger, Hy-pholoma epixanthum (Fr.) Quél , Inocybe olida R. Mre. and Lactarius flavidus Boud. were collected from the Trabzon region and identified as new records for the macrofungal flora of Turkey.
A Study In The Seasonal Variation Of Phytoplankton Inhafik Lake (Sivas, Turkey), Sabri Kilinç
A Study In The Seasonal Variation Of Phytoplankton Inhafik Lake (Sivas, Turkey), Sabri Kilinç
Turkish Journal of Botany
The seasonal variations in composition of the phytoplankton of Hafik lake was studied from April 1986to June 1987. Ba- cillariophyta, Chlorophyta, and Cyanophyta were the most abundant components of the phytoplankton community. Chrysophyta, Cryptophyta, Dinophyta, and Euglenophyta were found in low numbers. Diatoms showed an increase in spring but were scarce in summer and autumn. Cyclotella meneghiniana Kuetz. and Cyclotella ocellata Pant. were the most frequent species. Chlorophyta was the next most abundant group and showed greater numbers in spring than in autumn and summer. Chlamydonomonas, Oo- cytis, and Scenedesmus species were the main algae. Cyanophyta members (Gloeocapsa, Chroococcus, Oscillatoria) …
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 …
Effects Of Salt Stress And Synthetic Hormone Polystimuline K Onphotosynthetic Activity Of Trianea Bogotensis Karst, Surhay Ragimoğlu Allahverdiev, Meltem Mavi̇tuna, Rena Gani̇eva, Saeedeh Nafisi
Effects Of Salt Stress And Synthetic Hormone Polystimuline K Onphotosynthetic Activity Of Trianea Bogotensis Karst, Surhay Ragimoğlu Allahverdiev, Meltem Mavi̇tuna, Rena Gani̇eva, Saeedeh Nafisi
Turkish Journal of Botany
In the present study the effect of kinetin like synthetic hormone Polystimuline K (PS-K) on photosynthetic activity of salt stressed Trianea bogotensis Karst (Hydrocharitaceae) has been shown. Chlorophyll variable fluorescence (Fv) and slow fluo- rescence (SF) have been used to investigate the sensitivity of Photosystem II (PS II) to different salt stress treatments (103, 155 and 344 mM), at different time courses (15, 30, 60, 360 and 720 minutes). Salt stress (155 mM NaCl) treatments of the seed- lings inhibited the SF magnitude approximately to 50 %. Pretreatment of seedlings for 30 minutes in 20 mg/l PS-K followed by salt …
A New Record For The Marine Algal Flora Of Turkey: Caulerpa Scalpelliformis (Brown Exturner) C. Agardh ( Caluerpaceae, Chlorophyceae), Ö. Osman Ertan, İsmail İ. Turna, Mario Cormaci
A New Record For The Marine Algal Flora Of Turkey: Caulerpa Scalpelliformis (Brown Exturner) C. Agardh ( Caluerpaceae, Chlorophyceae), Ö. Osman Ertan, İsmail İ. Turna, Mario Cormaci
Turkish Journal of Botany
The first record of C. scalpelliformis (Brown ex Turner) C. Agardh from Antalya harbour (36°53'.1 N, 030°42'.2 E) is reported here. The species was found in the year 1995, in the period August-September, when seawater temperature reached 26.5 to 27°C. After this time, the species seemed to disappear, probably because of low winter temperatures. Thus, the occurrence of this species in Antalya harbour should be considered temporary, not as an indication of the expansion of the distribution area of this lessepsian species in the Mediterranean Sea.
Susceptibility Of Different Lentil ( Lens Culinaris Medik.) Cultivars Toagrobacterium Tumefaciens (Smith & Townsend) Conn, Aziz Karakaya, Sebahattin Özcan
Susceptibility Of Different Lentil ( Lens Culinaris Medik.) Cultivars Toagrobacterium Tumefaciens (Smith & Townsend) Conn, Aziz Karakaya, Sebahattin Özcan
Turkish Journal of Botany
Agrobacterium tumefaciens (Smith& Townsend) Conn is commonly used in gene transfer to plants. The effectiveness of bacterial strains and suitable plant genotypes facilitate this process. In this study, 8 lentil cultivars grown in Turkey were assessed for their susceptibility to two wild-type A. tumefaciens strains, A281 and A136NC. Both strains induced tumors in lentil cultivars, while differing in the ability to form tumors. Although most of the cultivars had some degree of susceptibility to A. tumefaciens infection, cultivars Yesil 21 and Pul 11 had higher frequencies of tumor formation in both strains than the other cultivars tested.
Pollen Flora Of Pakistan - X. Leguminosae(Subfamily: Caesalpinioideae), Anjum Perveen, Mohammad Qaiser
Pollen Flora Of Pakistan - X. Leguminosae(Subfamily: Caesalpinioideae), Anjum Perveen, Mohammad Qaiser
Turkish Journal of Botany
The pollen morphology of 11 species representing 5 genera of the subfamily Caesalpinioideae from Pakistan was examined by light and scanning electron microscope. Caesalpinioideae is ± a eurypalynous subfamily. The pollen grains are generallly radially symmetrical, isopolar, tricolporate and triangular-trilobed. The tectum is commonly reticulate-rugulate or fossulate-foveolate, and often striate. The pollen morphology of the subfamily is significantly useful at the generic and specific levels. On the basis of apocolpium, mesocolpium and tectum features, three pollen types were recongnized, namely, B auhinia variegata - type , Caesalpinia pulcherrima - type and Senna holosericea - type.
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.
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 …
Two New Species To Turkey From Turkish Thrace: Mibora Minima (L.) Desv. (Gramineae) & Trifolium Ornithopodioides (L.) Sm. ( Leguminosae), Andrew Byfield, Neriman Özhatay
Two New Species To Turkey From Turkish Thrace: Mibora Minima (L.) Desv. (Gramineae) & Trifolium Ornithopodioides (L.) Sm. ( Leguminosae), Andrew Byfield, Neriman Özhatay
Turkish Journal of Botany
Mibora minima (L.) Desv. ( Gramineae) and Trifolium ornithopodioides (L.) Sm. ( Leguminosae) are added new to the Turkish flora from localities in Turkish Thrace. Their diagnostic characters are briefly described and their ecology and conservation discussed.
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 …
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.
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.