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Articles 6451 - 6480 of 10759

Full-Text Articles in Botany

Susceptibility Of Different Lentil ( Lens Culinaris Medik.) Cultivars Toagrobacterium Tumefaciens (Smith & Townsend) Conn, Aziz Karakaya, Sebahattin Özcan Jan 1998

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.

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Vegetation Mosaic Around The First Center Of Tourism Development In The Uludağ Mountain, Bursa-Turkey, Gürcan Güleryüz, Hülya Arslan, Mustafa Gökçeoğlu, Helmut Rehder Jan 1998

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 …

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An Autecological Study On The Vitex Agnus-Castus L. (Verbenaceae)Distributed In West Anatolia, Yunus Doğan, Hasan Hüseyin Mert Jan 1998

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 …

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An Autecological Study On Iris Pseudacorus L. (Iridaceae), Ali Engi̇n, Nezahat Kandemi̇r, Gülcan Şenel, Mustafa Özkan Jan 1998

An Autecological Study On Iris Pseudacorus L. (Iridaceae), Ali Engi̇n, Nezahat Kandemi̇r, Gülcan Şenel, Mustafa Özkan

Turkish Journal of Botany

The ecological properties of Iris pseudacorus L., a marsh plant species, were investigated. The analysis of N%, P% and K% in the below-ground and above-ground parts of the plant was carried out. In addition, soil samples were collected and their physical and chemical aspects were analyzed.

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Some Macrofungi Species Of European Part Of Turkey, Georgi Stojchev, Ahmet Asan, Fahrettin Güci̇n Jan 1998

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.

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A New Ascomycete Genus (Cyathipodia Boud.) Record Forthe Fungi Flora Of Turkey, M. Halil Solak Jan 1998

A New Ascomycete Genus (Cyathipodia Boud.) Record Forthe Fungi Flora Of Turkey, M. Halil Solak

Turkish Journal of Botany

In this study CyathipodiaBoud., a member of the Helvellaceae family (Pezizales, Ascomycetes)was recorded for the first time from Turkey.

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A New Aquatic Liverwort For The Flora Of Turkey, İsa Gökler, Veysel Aysel Jan 1998

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.

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A New Species From Southern Anatolia: Stachys Cydni Kotschy Ex Gemici & Leblebici, Yusuf Gemi̇ci̇, Erkuter Leblebi̇ci̇ Jan 1998

A New Species From Southern Anatolia: Stachys Cydni Kotschy Ex Gemici & Leblebici, Yusuf Gemi̇ci̇, Erkuter Leblebi̇ci̇

Turkish Journal of Botany

A new Lamiaceae species, Stachys cydni Kotschy Gemici & Leblebici is described from the Bolkar Mountains (Içel) in southern Anatolia. This species grows in rock crevices at an altitude of 1450-1560 m. The diagnostic features, a detailed description and a figure of the species are given with a discussion of its taxonomy.

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The Effects Of Different Sucrose, Agar And Ph Levels On In Vitro Shoot Production Of Almond ( Amygdalus Communis L.), Songül Gürel, Yücel Gülşen Jan 1998

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 …

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The Effects Of Iba And Bap On In Vitro Shoot Production Of Almond(Amygdalus Communis L.), Songül Gürel, Yücel Gülşen Jan 1998

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 …

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Lichens Of The Thrace Region Of Turkey, A. Özdemir Türk, Hüseyin Güner Jan 1998

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.

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Liverworts ( Marchantiopsida) Of The Altindere Valley National Park, İsa Gökler Jan 1998

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.

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New Records Of Vascular Plants For Northern Mt. Strandzha (Se Bulgaria), Chavdar Gussev, Cvetomir Denchev, Jordanka Koeva, Dolja Pavlova, Dimitar Dimitrov Jan 1998

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.

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Anatomy Of The Barks Of Rhus Coriaria L., Ayşegül Güvenç Jan 1998

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.

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Two New Species To Turkey From Turkish Thrace: Mibora Minima (L.) Desv. (Gramineae) & Trifolium Ornithopodioides (L.) Sm. ( Leguminosae), Andrew Byfield, Neriman Özhatay Jan 1998

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.

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Composition And Change Of Maritime Hammock Flora In East-Central Florida After 20 Years, Donald John Spence Jan 1998

Composition And Change Of Maritime Hammock Flora In East-Central Florida After 20 Years, Donald John Spence

Retrospective Theses and Dissertations

The vegetation of eight east-central Florida maritime hammocks studied in 1997 were compared to similar data collected over 20 years ago. Study sites are located in the northern half of the Indian River Lagoon system mostly within Canaveral National Seashore and Merritt Island National Wildlife Refuge. The upland hammock vegetation throughout the state generally has an oak-palm association, but here these species dominate. Results show that sabal palm, live oak, laurel oak, and pignut hickory, the four dominant tree species in 1976-77, are still dominant in 1997; however, there has been a loss in tree species richness. Most shrub species …

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Floristic Inventory Of Three Bogs On Crowley's Ridge In Arkansas, Staria S. Vanderpool, Edward Leon Richards Jan 1998

Floristic Inventory Of Three Bogs On Crowley's Ridge In Arkansas, Staria S. Vanderpool, Edward Leon Richards

Journal of the Arkansas Academy of Science

A floristic inventory of vascular plant taxa of three wetlands known locally as bogs on Crowley's Ridge in Greene and Clay counties was conducted from August 1979 to July 1981. Total combined area of the three sites was 9.2 ha with a range from 2.3 ha to 4.3 ha. Overall 360 taxa representing 227 genera and 92 families were collected from the bogs and surrounding upland forest and identified. Plant taxa from bog sites ranged from 81 to 89 species with 35 species collected from all 3 bogs and 26 found in 2 of the 3 sites. Among the taxa …

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Rediscovery Of Marsilea Vestita Subsp. Vestita In Pulaski County, Arkansas After 162 Years, Theo Witsell, William M. Shepherd Jan 1998

Rediscovery Of Marsilea Vestita Subsp. Vestita In Pulaski County, Arkansas After 162 Years, Theo Witsell, William M. Shepherd

Journal of the Arkansas Academy of Science

No abstract provided.

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The In Vitro Propagation Of Seagrasses : Halophila Ovalis, Ruppia Megacarpa And Posidonia Coriacea, Melissa Grace Henry Jan 1998

The In Vitro Propagation Of Seagrasses : Halophila Ovalis, Ruppia Megacarpa And Posidonia Coriacea, Melissa Grace Henry

Theses : Honours

Seagrass communities are of high ecological and economic significance. They provide a nursery area for commercial and recreational juvenile fish and crustacea. Seagrasses also play an important role in influencing the structure and function of many estuarine and nearshore marine environments. Unfortunately, the decline of seagrasses, as a result of human impact, has increased in recent years. This decline has become a major problem throughout the world. Current methods used to restore degraded seagrass beds are limited, the most promising being transplanting material from healthy donor beds. This approach is expensive because it is labor intensive and damages the donor …

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Growth Traits Among Sorghum Genotypes In Response To Aluminum, J. H. Bernal, R. B. Clark Jan 1998

Growth Traits Among Sorghum Genotypes In Response To Aluminum, J. H. Bernal, R. B. Clark

Department of Agronomy and Horticulture: Faculty Publications

Aluminum (Al) has many detrimental effects on plant growth, and shoots and roots are normally affected differently. A study was conducted to determine differences among sorghum [Sorghum bicolor (L.) Moench] genotypes with broad genetic backgrounds for growth traits of plants grown at 0,200,400,600, and 800 uM Al in nutrient solutions (pH 4.0). Genotypes were categorized into "Al-sensitive", "intermediate Al-tolerant", "Al-tolerant", and SC 283 (an Al-tolerant standard). As Al increased, shoot and root dry matter (DM), net main axis root length (NMARL), and total root length (TRL) became lower than controls (0 Al). Aluminum toxicity and/or nutrient deficiency symptoms become …

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Population Biology Of Intraspecific Polyploidy In Grasses, Kathleen H. Keeler Jan 1998

Population Biology Of Intraspecific Polyploidy In Grasses, Kathleen H. Keeler

School of Biological Sciences: Faculty Publications

Polyploidy is the duplication of an entire nuclear genome, whether diploid or higher level (Stebbins, 1971; Thompson and Lumaret, 1992) and a frequent occurrence in plants. Stebbins (1971) estimated that 30-35% of flowering plant species are polyploid, and that many more had a polyploid event in their evolutionary history, including all members of such important families as the Magnoliaceae, Salicaceae, and Ericaceae. Goldblatt (1980) estimated 55%, but probably up to 75%, of monocotyledons had at least one polyploid event in their history, using the criterion that if the species has a base number higher than n = 13 it is …

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Seedling Development In Species Of Chamaesyce (Euphorbiaceae) With Erect Growth Habits, W. John Hayden, Olga Troyanskaya Jan 1998

Seedling Development In Species Of Chamaesyce (Euphorbiaceae) With Erect Growth Habits, W. John Hayden, Olga Troyanskaya

Biology Faculty Publications

Seedling development is described for Chamaesyce hirta, C. hypericifolia, and C. mesembrianthemifolia as discerned by light microscopy and scanning electron microscopy. Although these species ultimately develop erect to ascending growth habits, epicotyl development is limited to the production of a single pair ofleaves located immediately superjacent to and decussate with the cotyledons. The shoot system develops from one or more buds located in the axils of the cotyledons. In all respects, seedling ontogeny is very similar to that of previously studied prostrate species of Chamaesyce. Evidence from seedling ontogeny thus contradicts a hypothesis concerning homologies of plant …

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Nonvolatile Acid Composition During Fruit Development Ofdiospyros Lotus L., F. Ahmet Ayaz, Asım Kadioğlu Jan 1998

Nonvolatile Acid Composition During Fruit Development Ofdiospyros Lotus L., F. Ahmet Ayaz, Asım Kadioğlu

Turkish Journal of Botany

Changes in nonvolatile acid contents during fruit development of Diospyros lotus L ( Ebenaceae) were studied. Suc-cinic, furmaric, malic, citric and azelaic acids were identified and quantified by gas chromatography. The quantities of all acids varied significantly during the fruit development. Malic and citric acids were generally predominant in all development stages. During havesting time (on day 331), fumaric acid was the most abundant acid in the fruits. Quantities of malic, succinic, fu-maric and citric acids (except azelaic acid) were found to be the highest in September (on day 271).

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New Floristic Records For The Grid Square C_3(Akseki-Antalya-Turkey), Ahmet Duran, Hayri Duman Jan 1998

New Floristic Records For The Grid Square C_3(Akseki-Antalya-Turkey), Ahmet Duran, Hayri Duman

Turkish Journal of Botany

No abstract provided.

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Effects Of Cytozyme Crop Plus On Lycopersicum Esculentum Mill. Plant Yield, Meliha Gemi̇ci̇, Avni Güven, Pervin Katmer Jan 1998

Effects Of Cytozyme Crop Plus On Lycopersicum Esculentum Mill. Plant Yield, Meliha Gemi̇ci̇, Avni Güven, Pervin Katmer

Turkish Journal of Botany

The effects of various concentrations of Cytozyme Crop Plus (CCP) on Lycopersicum esculentum Mill. plant yield have been examined in this study. Single doses of 50 and 100 ml per decare of CCP were pulverized on seedlings of 15 cm height after second flowering, which have been given normal care. In addition, 50 ml per decare has been aplied twice in a separate parcel. The data obtained from the three replicates organized according to random blocks trial pattern have been compared with the control. In the trial parcel where daily irrigation and care procedures were carried out, specific yield values …

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Spectrophotometric Determination Of Chlorophyll - A, B And Totalcarotenoid Contents Of Some Algae Species Using Different Solvents, Şükran Dere, Tohit Güneş, Rıdvan Sivaci Jan 1998

Spectrophotometric Determination Of Chlorophyll - A, B And Totalcarotenoid Contents Of Some Algae Species Using Different Solvents, Şükran Dere, Tohit Güneş, Rıdvan Sivaci

Turkish Journal of Botany

In our study, chlorophyll a, chlorophyll b and the total amounts of carotenoids in Cladophora glomerata (L.) Kuetzing, Ulva rigita L., Codium tomentosum (Huds.) Stackh and Cladostephus verticillatus Ag. species were determined. Methanol, acetone and diethyl ether were used as solvents. The chlorophyll amount in Cladophora glomerata L. Kuetzing, species and carotenoids in Cladostephus verticillatus Ag. were found the highest. It was observed that sonication had no much contribution to the extraction.

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A Study In The Seasonal Variation Of Phytoplankton Inhafik Lake (Sivas, Turkey), Sabri Kilinç Jan 1998

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) …

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Pollen Flora Of Pakistan - Xi. Leguminosae(Subfamily: Mimosoideae), Anjum Perveen, Mohammad Qaiser Jan 1998

Pollen Flora Of Pakistan - Xi. Leguminosae(Subfamily: Mimosoideae), Anjum Perveen, Mohammad Qaiser

Turkish Journal of Botany

The pollen morphology of 14 species representing 5 genera of the subfamily Mimosoideae from Pakistan has been examined using light and scanning electron microscopy. Mimosoideae are eurypalynous subfamily. The pollen grains are united (polyads) or free. Single grains are tricolporate and triangular - trilobed. The pollen morphology of the subfamily is significantly useful at generic and tribal level. The 3 pollen types recognized ie, Acacia nilotica - type, Mimlosa hamata - type and Prosopis juliflora - type, correspond closely with tribal classifications.

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Lichens Of The Akşehir District (Konya), Feray Karabulut, A. Özdemir Türk Jan 1998

Lichens Of The Akşehir District (Konya), Feray Karabulut, A. Özdemir Türk

Turkish Journal of Botany

Eighty-nine lichen species belonging to 33 genera from Aksehir District of Konya were determined. Staurothele frustulenta Vainio is a new record for the lichen flora of Turkey.

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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 Jan 1998

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.

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