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Articles 1 - 30 of 62
Full-Text Articles in Life Sciences
Nutrient Contents Of Pinus Brutia Ten. (Pinaceae) And Pistacia Terebinthus L. (Anacardiaceae) Growing On Marl And Conglomerate Substrata In The Eastern Mediterranean, Hüsni̇ye Aka Sağliker, Cengi̇z Darici
Nutrient Contents Of Pinus Brutia Ten. (Pinaceae) And Pistacia Terebinthus L. (Anacardiaceae) Growing On Marl And Conglomerate Substrata In The Eastern Mediterranean, Hüsni̇ye Aka Sağliker, Cengi̇z Darici
Turkish Journal of Botany
The eastern Mediterranean region is one of the main areas of the Mediterranean vegetation containing Calabrian cluster pine (Pinus brutia Ten., Pinaceae) forests and terebinth (Pistacia terebinthus L., Anacardiaceae) communities. This study was carried out with the leaves, shoots, leaf litters, and soils of Calabrian cluster pine and terebinth growing on both marl and conglomerate substrata in the eastern Mediterranean region (Turkey) to determine average C, N, P and K contents, and the amounts of humic and fulvic acid in these plant soils. The average element contents of leaf, shoot, leaf litter and soil samples of both plants from the …
The Phytoplankton Community (Except Bacillariophyceae) Of Lake Abant (Bolu, Turkey), Abuzer Çelekli̇, Olcay Obali, Okan Külköylüoğlu
The Phytoplankton Community (Except Bacillariophyceae) Of Lake Abant (Bolu, Turkey), Abuzer Çelekli̇, Olcay Obali, Okan Külköylüoğlu
Turkish Journal of Botany
A total of 162 phytoplankton species found monthly from 3 littoral and 2 vertical stations between June 2003 and June 2005 were identified from Lake Abant (Bolu, Turkey). Some species, such as Trachelomonas volvocina Ehrenberg, Cryptomonas ovata Ehrenberg, and Ceratium hirundinella (Müller) Dujardin showed frequent occurrence almost every month, but others had specific seasonality. Phytoplankton composition of this lake was dominated by Chlorophyta, accounting for about 58.6% of the species richness. Phytoplankton composition in Lake Abant included many new reported (> 30) taxa for the algal flora of Turkey.
Temporal Changes In Environmental Characteristics And Diversity Of Net Phytoplankton In A Freshwater Lake, C. Chattopadhyay, T. C. Banerjee
Temporal Changes In Environmental Characteristics And Diversity Of Net Phytoplankton In A Freshwater Lake, C. Chattopadhyay, T. C. Banerjee
Turkish Journal of Botany
Temporal changes in the species composition, seasonal abundance, and diversity of net phytoplankton (NPP) were investigated in relation to some environmental characteristics of the water and sediment of Lake Krishnasayer, an ancient man-made shallow freshwater lake, located at Burdwan, India, between January and December 2003. In all, 43 species and 7 genera were identified from the weekly samples taken from a 1 x 1 x 1-m water column at sites I and II. The most abundant taxa were Cyanophyta (34.8%-37.8%) and Bacillariophyta (34.2%-34.3%), whilst Euglenophyta was the least abundant (4%-5.3%). The relationships (r) were significant (P < 0.05) and positive between water temperature and abundance of Euglenophyta, Secchi transparency, and Chlorophyta and Bacillariophyta, dissolved oxygen and Chlorophyta, dissolved chloride, and Cyanophyta and Euglenophyta, phosphate-phosphorus and Cyanophyta, and organic carbon and Bacillariophyta. In contrast, the relationships (r) were significant (P < 0.05), but inverse between water temperature and abundance of Bacillariophyta, Secchi transparency and Euglenophyta, dissolved chloride and Bacillariophyta, nitrate-nitrogen and Euglenophyta, and organic carbon and Euglenophyta. Furthermore, regression coefficients (b) indicated a significant (P < 0.05) positive relationship between Secchi transparency and overall NPP abundance, and a significant (P < 0.05) inverse relationship between silica and overall NPP abundance. The diversity indicated high values with peaks in species abundance in March, May, and September at site I, and in May, September, and November at site II. The seasonal abundance and frequency of occurrence for a few dominant species of Cyanophyta (e.g., Anabaena circinalis, Nostoc carneum, Oscillatoria formosa, Rivularia haematitis, and Spirula subsalsa), Chlorophyta (e.g., Spirogyra communis, Ulothrix tenerrima, and Zygnema pectinum), Euglenophyta (e.g., Euglena viridis), and Bacillariophyta (e.g., Cyclotella glomerata, Navicula capitata, Nitzschia acicularis, and Pinnularia major) in the surface water of this lake were 3.3%-5.5%, respectively.
Phenological Variations In The Surface Flavonoids Of Artemisia Vulgaris L. And Artemisia Absinthium L., Milena Nikolova, Dragan Velickovic
Phenological Variations In The Surface Flavonoids Of Artemisia Vulgaris L. And Artemisia Absinthium L., Milena Nikolova, Dragan Velickovic
Turkish Journal of Botany
Qualitative and quantitative variations in the surface flavonoids in relation to phenological development of Artemisia vulgaris L. and Artemisia absinthium L. were examined. Plant material was harvested at different phenological stages (vegetative, before budding, floral budding, flowering, and fruiting) of the life cycle of the species. In A. vulgaris and A. absinthium acetone exudates, 6 and 4 flavonoid aglycones were identified, respectively, by TLC analysis. Quercetin 3,7,3'-trimethyl ether is the main flavonoid in the exudates of A. vulgaris while quercetagetin 3,6,7,3',4'-pentamethyl ether is the predominant flavonoid in A. absinthium. Qualitative variations in the flavonoid composition of A. vulgaris were established. …
A New Alien Species For The Flora Of Turkey: Bidens Frondosa L. (Asteraceae), Kami̇l Coşkunçelebi̇, Sali̇h Terzi̇oğlu, Vladimir Vladimirov
A New Alien Species For The Flora Of Turkey: Bidens Frondosa L. (Asteraceae), Kami̇l Coşkunçelebi̇, Sali̇h Terzi̇oğlu, Vladimir Vladimirov
Turkish Journal of Botany
The North American species Bidens frondosa L. (Asteraceae) has been recorded as a new alien species for the flora of Turkey. The description of the species together with its drawing and distribution map is provided here.
A New Record From Lebanon: Panderia Pilosa Fisch. & C.A.Mey. (Chenopodiaceae), Ricardus M. Haber, Myrna T. Semaan
A New Record From Lebanon: Panderia Pilosa Fisch. & C.A.Mey. (Chenopodiaceae), Ricardus M. Haber, Myrna T. Semaan
Turkish Journal of Botany
Panderia pilosa Fisch. & C.A.Mey. (Chenopodiaceae) was never previously reported for the flora of Lebanon, although it occurs in all neighbouring countries. Specimens collected from Mount Mnaitra in the Mount Lebanon range confirm its presence.
Effect Of Ozone On Induction Of Resistance In Rhinacanthus Nasutus (L.) Kurz. Against Acute Ozone Exposure, Nadesan Sudhakar, D. Nagendra Prasad, N. Mohan, K. Murugesan
Effect Of Ozone On Induction Of Resistance In Rhinacanthus Nasutus (L.) Kurz. Against Acute Ozone Exposure, Nadesan Sudhakar, D. Nagendra Prasad, N. Mohan, K. Murugesan
Turkish Journal of Botany
Studies were undertaken for induction of resistance against acute ozone exposure in Rhinacanthus nasutus (L.) Kurz. plants using ozone. Callus induced from Rhinacanthus nasutus leaf explants on Murashige & Skoog's (MS) medium supplemented with 3.40 µM of 2,4-dichlorophenoxy acetic acid (2,4-D) were treated with different concentrations of ozone (T_1 = 1.0 µmol mol^{-1} (±0.2), T_2 = 1.5 µmol mol^{-1} (±0.2), T_3 = 2.0 µmol mol^{-1} (±0.2)), and for the control (C) filtered air was supplied. Regeneration of shoots was obtained by culturing ozone-treated calli on MS medium supplemented with 5.57 µM of kinetin (KIN) and 1.30 µM of gibberellic acid …
The Influence Of Certain Physical And Chemical Variables On The Seasonal Dynamics Of Phytoplankton Assemblages Of A Source Inlet And The Outlet Of The Shallow Hypertrophic Lake Manyas, Turkey, Kemal Çeli̇k, Tuğba Ongun
The Influence Of Certain Physical And Chemical Variables On The Seasonal Dynamics Of Phytoplankton Assemblages Of A Source Inlet And The Outlet Of The Shallow Hypertrophic Lake Manyas, Turkey, Kemal Çeli̇k, Tuğba Ongun
Turkish Journal of Botany
The relationships between water discharge, temperature, pH, conductivity, turbidity, nitrate, ammonium, phosphate and the seasonal dynamics of phytoplankton assemblages of one of the inlets, which is a source of waste for the lake, and the sole outlet of the shallow hypertrophic Lake Manyas, Turkey, were studied from January 2003 to August 2005. Conductivity, ammonium, nitrate, and phosphate concentrations were higher at the inlet than at the outlet. Diatoms and cyanobacteria were the dominant phytoplankton groups at both stations. Achnantes microcephala (Kütz.) Cleve was dominant throughout the year and Microcystis aeruginosa Kütz. was dominant in summer at both stations. Planktothrix rubescens …
The Flora Of Akçadağ (Van-Turkey), Osman Karabacak, Lütfi̇ Behçet
The Flora Of Akçadağ (Van-Turkey), Osman Karabacak, Lütfi̇ Behçet
Turkish Journal of Botany
This paper describes a floristic study of Akçadağ. The research was carried out between 2000 and 2002. During the study period, 2650 vascular plant specimens were collected. After the identification of the specimens, the flora was determined to include 891 taxa (at specific and intraspecific ranks) belonging to 738 species, 328 genera, and 70 families. The distribution of Campanula radula Fisch. in Turkey is recorded for the first time. Thirty-five taxa were defined as new records for the B9 square. The endemism rate of the area is 7.5% based on 67 taxa. The largest families are Asteraceae (142 taxa), Brassicaceae …
Nasturtiopsis Integrifolia (Boulos) Abdel Khalik & Bakker (Brassicaceae), A New Combination, And Cruciata Articulata (L.) Ehrend. (Rubiaceae), A New Record For The Flora Of Egypt, Kadry N. Abdel-Khalik, F. T. Bakker
Nasturtiopsis Integrifolia (Boulos) Abdel Khalik & Bakker (Brassicaceae), A New Combination, And Cruciata Articulata (L.) Ehrend. (Rubiaceae), A New Record For The Flora Of Egypt, Kadry N. Abdel-Khalik, F. T. Bakker
Turkish Journal of Botany
In Brassicaceae a new combination is made: Nasturtiopsis integrifolia (Boulos) Abdel Khalik & Bakker, and in Rubiaceae Cruciata articulata (L.) Ehrend. is a new record for the flora of Egypt. Descriptions, photographs, useful differential morphological characters, and a distribution map are given. Problems of nomenclature and synonymy are discussed.
Studies On The Hornworts And Liverworts Flora Of Antalya, Hati̇ce Özenoğlu Ki̇remi̇t, Atakan Sukatar, İsa Gökler
Studies On The Hornworts And Liverworts Flora Of Antalya, Hati̇ce Özenoğlu Ki̇remi̇t, Atakan Sukatar, İsa Gökler
Turkish Journal of Botany
This study includes a list of hornwort and liverwort flora of Antalya province. It is composed of 2 species belonging to a family of the class Anthocerotopsida and 35 species belonging to 23 families of the class Marchantiopsida of the division Bryophyta. For the C12 grid square of Turkey, 14 liverworts are new records.
The Family Boletaceae S.L. (Excluding Boletus) In The Republic Of Macedonia, Mitko Karadelev, Katerina Rusevska, Sofche Spasikova
The Family Boletaceae S.L. (Excluding Boletus) In The Republic Of Macedonia, Mitko Karadelev, Katerina Rusevska, Sofche Spasikova
Turkish Journal of Botany
This is the first paper on systematic research into Boletaceae s.l. (excluding Boletus L.) in the Republic of Macedonia. A total of 31 species belonging to 8 genera are registered in the Republic of Macedonia. Two genera (Gyrodon Opat. and Phylloporus Quél.) and 8 species (Chalciporus amarellus (Quél.) Bataille, Gyrodon lividus (Bull.: Fr.) Opat., Leccinum variicolor Watling, Leccinum vulpinum Watling, Phylloporus pelletieri (Lév.) Quél., Suillus mediterraneensis (Jacquet. & J.Blum) Redeuilh, Xerocomus ferrugineus (Schaeff.) Bon, and Xerocomus rubellus (Krombh.) Quél.) are reported as new for Macedonia.
Germination And Seedling Behaviours Of Seeds Of Peltophorum Pterocarpum D.C.Baker Ex K.Heyne Growing Under Motor Vehicle Emission, Muhammad Shafiq, Muhammad Zafar Iqbal
Germination And Seedling Behaviours Of Seeds Of Peltophorum Pterocarpum D.C.Baker Ex K.Heyne Growing Under Motor Vehicle Emission, Muhammad Shafiq, Muhammad Zafar Iqbal
Turkish Journal of Botany
Motor vehicle emission showed toxic effects on seed germination and seedling growth of Peltophorum pterocarpum D.C.Baker ex K.Heyne. Germination and growth of P. pterocarpum seeds were significantly (P < 0.05) affected in the seeds collected from the polluted areas as compared to the less polluted areas. A higher percentage of decrease in seed germination was found for the seeds collected from the extremely polluted area, followed by very much polluted, polluted, and a little polluted areas as compared to the unpolluted area (control). Seedling and root lengths were also highly decreased for the seeds of the same species collected from the extremely polluted area as compared to the control. A high percentage of seedling dry weight was found for the seeds of the same species collected from the extremely polluted area (62%), followed by very much polluted area (58%), polluted area (38%), and a little polluted area (28%) as compared to the control. According to the tolerance test, seedling growth of P. pterocarpum showed the lowest percentage of tolerance in the samples collected from the extremely polluted area (53%), followed by very much polluted area (71%), polluted area (89%), and a little polluted area (92%) as compared to the campus.
Combining Ability Analysis Of Yield And Yield Components In Tomato (Lycopersicum Esculentum Mill.), Mohammad Mofidul Hannan, Manosh Kumar Biswas, Mohammad Bulbul Ahmed, Monzur Hossain, Rafiul Islam
Combining Ability Analysis Of Yield And Yield Components In Tomato (Lycopersicum Esculentum Mill.), Mohammad Mofidul Hannan, Manosh Kumar Biswas, Mohammad Bulbul Ahmed, Monzur Hossain, Rafiul Islam
Turkish Journal of Botany
The nature of the inheritance of plant height at 60 days, number of flowers per cluster, number of fruits per plant, fruit weight per plant, and number of seeds per fruit was studied from a 10-parent diallel cross of Lycopersicum esculentum Mill. Due to their high general combining ability effects, Pusharubi, Bari-4, and Dynasagor parents were suggested for future hybridisation programmes. For yield, the crosses Deshy x Ratan, Deshy x Epoch, Dynasagor x Ratan, Bari-4 x Pusharubi, and Dynamo x Namdhari had good specific combining ability effects and they were recommended because they produce stable performing rare transgressive segregants. A …
The Taxonomy And Variation Of Leaf Anatomical Characters In The Genus Aegilops L. (Poaceae) In Iran, Navaz Kharazian
The Taxonomy And Variation Of Leaf Anatomical Characters In The Genus Aegilops L. (Poaceae) In Iran, Navaz Kharazian
Turkish Journal of Botany
This study concerns the evaluation of leaf anatomical characters (7 qualitative and 12 quantitative characters) among 26 accessions of the Aegilops L. species. The results of this study showed that the anatomical characters have high variation in the width of stomata, the number of long cells in the adaxial epidermis, the number of short cells in the abaxial epidermis, the number of stomata in the abaxial epidermis, the occurrence of prickles in the adaxial epidermis, and the width of phloem cells. The variations in anatomical characters were related to the cold and warm areas of Iran and commonly occurred among …
Genetic Diversity Among Nile Delta Isolates Of Rhizoctonia Solani Kühn Based On Pathogenicity, Compatibility, Isozyme Analysis And Total Protein Pattern, Yehia A.G. Mahmoud, Reda M. Gaafar, H. M. Mubarak
Genetic Diversity Among Nile Delta Isolates Of Rhizoctonia Solani Kühn Based On Pathogenicity, Compatibility, Isozyme Analysis And Total Protein Pattern, Yehia A.G. Mahmoud, Reda M. Gaafar, H. M. Mubarak
Turkish Journal of Botany
The present study obtained 12 isolates from Rhizoctonia solani Kühn isolated from Cotton L., Trifolium L. and Vicia faba L. from different localities in the Nile Delta of Egypt. All strains were pathogenic and caused seed rot, wilt, stunting, and pre-emergence and post-emergence damping-off. The isolated strains produced different forms of infection cushions that ensure the pathogenicity of these strains. SDS-PAGE of the 12 R. solani isolates showed that although the R. solani isolates were isolated from very divergent host plants, the total soluble protein patterns among them were similar. Isozyme analysis revealed higher polymorphism among R. solani isolates using …
The Effect Of Seed Mass On Germination, Seedling Survival And Growth In Prunus Jenkinsii Hook.F. & Thoms., Krishna Upadhaya, Harendra Nath Pandey, Pynsakhiat Law
The Effect Of Seed Mass On Germination, Seedling Survival And Growth In Prunus Jenkinsii Hook.F. & Thoms., Krishna Upadhaya, Harendra Nath Pandey, Pynsakhiat Law
Turkish Journal of Botany
The effect of seed mass on germination, seedling survival and growth was investigated in Prunus jenkinsii Hook.f. & Thoms. (Rosaceae), an evergreen tree species. Seed mass varied from a minimum of 0.5 g to a maximum of 2.72 g. Seed mass had a significant effect on the percentage of seeds that germinated: 28%, 41% and 42%, respectively, of light- (1.5 g), intermediate- (> 1.5 to 2 g) and heavy-weight (> 2 g) seeds germinated. After 1 year of germination, the seedlings that arose from heavy-, intermediate- and light-weight seeds showed 80%, 63% and 42% survival, respectively. Seedling vigour, expressed in …
Juniperus Oxycedrus L. Subsp. Oxycedrus Var. Spilinanus Yalt., Eliçin & Terzioğlu: A New Variety From Turkey, Fai̇k Yaltirik, Gökhan Eli̇çi̇n, Sali̇h Terzi̇oğlu
Juniperus Oxycedrus L. Subsp. Oxycedrus Var. Spilinanus Yalt., Eliçin & Terzioğlu: A New Variety From Turkey, Fai̇k Yaltirik, Gökhan Eli̇çi̇n, Sali̇h Terzi̇oğlu
Turkish Journal of Botany
A new variety from Turkey is described and illustrated: Juniperus oxycedrus L. subsp. oxycedrus var. spilinanus Yalt., Eliçin & Terzioğlu. This variety grows in forest clearings of Pinus brutia Ten. and P. nigra J.F.Arnold subsp. nigra var. caramanica (Loudon) Rehder, and on stony slopes (800-1400 m) in Spildağı National Park, Manisa (B1) in West Anatolia. Its diagnostic morphological characters are discussed.
New And Interesting Moss Records For Iran, Ahmad Ghahreman, Moussa Faridi, Saeed Shirzadian, Farideh Attar
New And Interesting Moss Records For Iran, Ahmad Ghahreman, Moussa Faridi, Saeed Shirzadian, Farideh Attar
Turkish Journal of Botany
Four moss species, namely, Tetraphis pellucida Hedw. (Tetraphidaceae), Ulota crispa (Hedw.) Brid. (Orthotrichaceae), Haplohymenium triste (Ces.) Kindb. (Anomodontaceae), and Rhynchostegiella litorea (De Not.) Limpr. (Brachytheciaceae) are recorded from Iran. The specimens were collected from Kheiroodkenar Forest, Mazandaran Province (north of Iran).
Phytoplankton (Except Bacillariophyceae) Flora Of Lake Gölköy (Bolu), Abuzer Çelekli̇, Meri̇ç Albay, Muzaffer Dügel
Phytoplankton (Except Bacillariophyceae) Flora Of Lake Gölköy (Bolu), Abuzer Çelekli̇, Meri̇ç Albay, Muzaffer Dügel
Turkish Journal of Botany
The phytoplankton composition of Lake Gölköy was studied by monthly sample collection from 3 littoral and 2 pelagic stations during a 2-year period (June 2003-June 2005). In total, 152 taxa belonging to Chlorophyta (61.8%), Euglenophyta (12.5%), Cyanoprokaryota (10.5%), Pyrrophyta (5.3%), Chrysophyta (4.6%), Cryptophyta (3.9%), Xanthophyta (0.7%), and Prasinophyta (0.7%) were identified. Spirogyra and Scenedesmus were the most abundant genera, with 13 and 10 species, respectively. Some species found in the lake were new records for the Bolu region (e.g., Gonium pectorale Müller, Polytoma cylindraceum Pasher 1927, Provasoliella ovata (Jacobsen) Loeblich, and Anabaena crassa (Lemmermann) Komárková-Legnerová & Cronberg).
New Record For A Dinoflagellate Species (Gonyaulax Pacifica Kofoid) From Turkish Coastal Waters (Northeastern Mediterranean Sea), Sevi̇m Polat
Turkish Journal of Botany
The dinoflagellate species Gonyaulax pacifica Kofoid is reported for the first time from northeastern Mediterranean coast of Turkey; it has not previously been reported for any Turkish coastal waters. The morphological characteristics of this species are described in detail and information about its ecological and biogeographical distribution is given.
Lichens From The Maslak Campus Of İstanbul Technical University, Gülşah Çobanoğlu
Lichens From The Maslak Campus Of İstanbul Technical University, Gülşah Çobanoğlu
Turkish Journal of Botany
The lichen diversity of the Maslak Campus of İstanbul Technical University is presented in this study. In total, 23 lichen species belonging to 14 genera were recorded. Strangospora pinicola (A.Massal.) Körb. is a new record for the Turkish lichen flora and 5 species are new records for İstanbul province.
Serratula Oligocephala Dc. (Asteraceae), A New Record For The Flora Of Lebanon, Myrna T. Semaan, Ricardus M. Haber
Serratula Oligocephala Dc. (Asteraceae), A New Record For The Flora Of Lebanon, Myrna T. Semaan, Ricardus M. Haber
Turkish Journal of Botany
Serratula oligocephala DC. is currently reported as an endemic species of Turkey, where it has limited distribution in east and south Anatolia. Specimens collected from the continental humid slopes beneath the northern summits of the Mount Lebanon Range in the eastern Mediterranean confirm the occurrence of the species in Lebanon.
Construction Of A Genetic Linkage Map Of Citrus With Random Amplified Polymorphic Dna (Rapd) Markers Using A Progeny Population From A Complex Intergeneric Cross, Mehtap Şahi̇n Çevi̇k, Gloria A. Moore
Construction Of A Genetic Linkage Map Of Citrus With Random Amplified Polymorphic Dna (Rapd) Markers Using A Progeny Population From A Complex Intergeneric Cross, Mehtap Şahi̇n Çevi̇k, Gloria A. Moore
Turkish Journal of Botany
This study included 30 plants that were randomly selected from a larger progeny population obtained from a complex intergeneric cross of {C. grandis (L.) Osb. x [C. paradisi Macf. x Poncirus trifoliata (L.) Raf.]} x {[(C. paradisi Macf. x P. trifoliata (L.) Raf.) x C. reticulata Blanco] x [(C. paradisi Macf. x Poncirus trifoliata (L.) Raf.) x C. sinensis (L.) Osb.]}. Genomic DNA was extracted from leaf samples of these plants and analysed for polymorphisms by polymerase chain reaction (PCR), using 10-mer random primers. A total of 111 random amplified polymorphic DNA (RAPD) markers were identified using 38 random primers. …
Flora Of The Gölcük Area (Bolu, Turkey), Nursel İki̇nci̇, Adi̇l Güner
Flora Of The Gölcük Area (Bolu, Turkey), Nursel İki̇nci̇, Adi̇l Güner
Turkish Journal of Botany
Field studies were carried out to determine the vascular flora of the Gölcük area (Bolu) during 1997-1998. At the end of the evaluation of the identification of the collected specimens and the results of previous studies, 80 families, 277 genera, 461 species and 475 taxa in total were determined. The rates of species belonging to certain phytogegraphical regions are as follows: the Euro-Siberians 30.8% (142 spp.), the Irano-Turanians 1.5% (7 spp.), the Mediterraneans 5.2% (24 spp.), and phytogeographically unknown 58.4% (269 spp.). The number of endemic taxa found in the research area is 16; thus the endemism rate is 3.5%. …
Effects Of Salinity: Calcium Interaction On Growth And Nucleic Acid Metabolism In Five Species Of Chenopodiaceae, Essam E. M. Abo-Kassem
Effects Of Salinity: Calcium Interaction On Growth And Nucleic Acid Metabolism In Five Species Of Chenopodiaceae, Essam E. M. Abo-Kassem
Turkish Journal of Botany
Seed germination, seedling growth, and some enzyme activity of nucleic acid metabolism were studied in 5 members of Chenopodiaceae [Beta vulgaris L., Chenopodium quinoa Willd., Spinacea oleracea L., Allenrolfia occidentalis (S.Watson) Kuntze, Atriplex hortensis L.] under NaCl salinity alone or combined with 0.5 mM CaSO_4. High salinity delayed radical emergence and decreased germination percentage in all plants. Combined CaSO_4 reduced inhibition of seed germination in B. vulgaris, S. oleracea, and A. hortensis, but increased it in C. quinoa and A. occidentalis. CaSO_4 reduced plant growth to a greater degree than high salinity did. High salinity decreased total nucleic acid content …
Evaluation Of Karyotype Status Of Musa L. Somaclonal Variants (Musaceae: Zingiberales), Gordian C. Obute, Philip C. Aziagba
Evaluation Of Karyotype Status Of Musa L. Somaclonal Variants (Musaceae: Zingiberales), Gordian C. Obute, Philip C. Aziagba
Turkish Journal of Botany
Tissue culture regenerated materials of Musa L. spp. (banana and plantain) along with their somaclonal variants were assessed for karyotype abnormalities to be used as indicators for rapid cytological marking. The results show that although slight variations were noted in karyomorphometric characters, like chromosome number, arm length, total chromosome length, and total chromosome volume, these were not significant (P £ 0.05). Therefore, chromosomal abnormalities may not be accurate markers for somaclonal variation in these species. The need to not overemphasise chromosomal instability resulting from culture techniques was highlighted. Other possible causes of somaclonal variations were proposed to explain this phenomenon …
Two New Records For The Freshwater Algae Of Turkey, Bülent Şahi̇n
Two New Records For The Freshwater Algae Of Turkey, Bülent Şahi̇n
Turkish Journal of Botany
Gonatozygon aculeatum Hastings and Cosmarium quadratum Ralfs ex Ralfs were recorded for the first time in the freshwater algal flora of Turkey.
Pollen Morphology Of The Turkish Romulea Maratti (Iridaceae), Serap Işik, Emel Oybak Dönmez
Pollen Morphology Of The Turkish Romulea Maratti (Iridaceae), Serap Işik, Emel Oybak Dönmez
Turkish Journal of Botany
Pollen morphology of the Turkish Romulea Maratti taxa (Iridaceae) was examined using light and scanning electron microscopy. The taxa are similar in some aspects, such as pollen size and spinulate-microperforate exine sculpturing. Most taxa are monosulcate; however, in 2 taxa, R. bulbocodium (L.) Seb. & Mauri var. crocea (Boiss & Heldr.) Baker and var. leichtliniana (Heldr. ex Hal.) Bég., growing sporadically in south-western Turkey, the existence of pollen type variability (monosulcate, disulcate, trisulcate, trisynsulcate, tetrasulcate, penta-aperturate (with longer and shorter sulci), and monoporate) from single pollen sacs was recorded for the first time. In addition, aperture morphology was found to …
The Effect Of Air Pollution On Microsporogenesis, Pollen Development And Soluble Pollen Proteins In Spartium Junceum L. (Fabaceae), Farkhondeh Rezanejad
The Effect Of Air Pollution On Microsporogenesis, Pollen Development And Soluble Pollen Proteins In Spartium Junceum L. (Fabaceae), Farkhondeh Rezanejad
Turkish Journal of Botany
Air pollution induces abnormality in anthers, reduction of pollen grains´ umbers and male sterility. Anthers of Spartium junceum L. (Spanish broom) were collected at different stages of development from control (less polluted) and polluted areas (mainly SO_2, NO_2, CO, hydrocarbons (HCs) and airborne particulate material (APM)). Structure and development of anther walls and pollen grains were studied and compared. Groups of the control pollen grains were exposed to the polluted air of Tehran for 10 and 20 days. Under pollution stress some anthers became abnormal and shrunken. The tapetum layer had a precocious growth in the microspore mother cell stage …