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Articles 6271 - 6300 of 10759

Full-Text Articles in Botany

An Expanded Circumscription Of Bouteloua (Gramineae: Choridoideae): New Combinations And Names, J. Travis Columbus Jan 1999

An Expanded Circumscription Of Bouteloua (Gramineae: Choridoideae): New Combinations And Names, J. Travis Columbus

Aliso: A Journal of Systematic and Floristic Botany

Cladistic analysis of nuclear ribosomal and chloroplast DNA sequences has revealed that the New World grass genus Bouteloua (Chloridoideae) is not monophyletic. Indeed, some species of Bouteloua are more closely related to species in other genera than to congeners. The problem was dealt with by expanding the circumscription of Bouteloua to include species formerly positioned in the satellite genera Buchloe (1 species), Buchlomimus/em> (1), Cathestecum/em> (4), Cyclostachya/em> (1), Griffithsochloa (1), Opizia (2), Pentarrhaphis (3), Pringleochloa (1), and Soderstromia(1). Thirteen new combinations and names were necessary. As here circumscribed, Bouteloua is monophyletic and comprises 57 species.

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Glume Absence In The Orcuttieae (Gramineae: Chloridoideae) And A Hypothisis Of Intratribal Relationships, Eric H. Roalson Jan 1999

Glume Absence In The Orcuttieae (Gramineae: Chloridoideae) And A Hypothisis Of Intratribal Relationships, Eric H. Roalson

Aliso: A Journal of Systematic and Floristic Botany

This study addresses glume absence in tribe Orcuttieae. In Orcuttia califomica, O. inaequalis, and O. viscida, all spikelets possess two glumes except for the terminal spikelet of the inflorescence, which lacks both glumes. In O. pilosa and Tuctoria greenei the terminal spikelet lacks only the first (proximal) glume, whereas in O. tenuis, T. fragilis, and T. mucronata both glumes are developed on all spikelets. This is the first report of glume absence in species of Orcuttieae other than Neostapfia colusana, which has been long reported to lack both glumes on all spikelets. A hypothesis …

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Native Vegetation Handbook For The Shire Of Toodyay, Sarah J. Weaving Jan 1999

Native Vegetation Handbook For The Shire Of Toodyay, Sarah J. Weaving

Native vegetation handbook series

The Handbook provides land managers with information relating to the natural resources of the Shire of Toodyay, including the original and existing vegetation, drainage systems and soils. Some of the problems relating to the management of these resources within the Shire and ideas and community initiatives to solve these problems are also discussed. It is hoped that this information will contribute to the long term viability of the agricultural landscape and the conservation of native vegetation within the shire.

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Amanoa, W. John Hayden Jan 1999

Amanoa, W. John Hayden

Biology Faculty Publications

Monoecious or dioecious trees or shrubs, latex absent. Leaves alternate, distichous, evergreen, simple, coriaceous, glabrous; stipules intrapetiolar, paired, or confluent across the leaf axil; margins entire; venation pinnate. Inflorescence axillary and/or terminal, of densely bracteate clusters (reduced cymules), in the axils of ordinary foliage leaves, in nonleafy pseudoterminal aggregates that revert to vegetative growth, or (in neotropical species) in the axils of alternate, reduced, crescentiform stipular bracts of determinate deciduous spiciform axes borne in groups of 1-several per branch apex; axes straight or sinuous; floral bracts minute, deltate, with abaxially pubescent midribs. Staminate flowers sessile or pedicellate, regular; perianth biseriate; …

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Notes: Evaluation Of A Filter Bag System For Ndf, Adf, And Ivdmd Forage Analysis, Kenneth P. Vogel, Jeffrey F. Pedersen, Steven D. Masterson, John J. Toy Jan 1999

Notes: Evaluation Of A Filter Bag System For Ndf, Adf, And Ivdmd Forage Analysis, Kenneth P. Vogel, Jeffrey F. Pedersen, Steven D. Masterson, John J. Toy

Department of Agronomy and Horticulture: Faculty Publications

A new method of determining in vitro dry matter digestibility (IVDMD) as recently developed in which the digestion is conducted with the forage samples in filter bags. Our objective was to compare the filter bag and conventional IVDMD analysis methods using smooth bromegrass (Bromus inermis Leyss.), switchgrass (Panicum virgatum L.), and forage sorghum [Sorghum bicolor (L.) Moench] samples. In addition, the filter bag analysis systems for determining non-sequential neutral and acid detergent fiber (NDF and ADF), respectively, were compared with the non-sequential conventional analysis systems. In the filter bag systems, the forage samples are sealed in filter bags and the …

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Eleocharis Yecorensis (Cyperaceae), A New Species Of Spike-Sedge From México, Eric H. Roalson Jan 1999

Eleocharis Yecorensis (Cyperaceae), A New Species Of Spike-Sedge From México, Eric H. Roalson

Aliso: A Journal of Systematic and Floristic Botany

Eleocharis (Cyperaceae) includes approximately 200 species and is particularly diverse in the New World. A newly discovered species of subgenus Limnochloa is described from the states of Sonora and Mexico, Mexico. Eleocharis yecorensis is related to E. acutangula, E. mutata. and E. quadrangulata and can be distinguished from these species by its five-angled culms, obdeltoid achenes. and narrow neck between tubercle and achene body. In addition. E. yecorensis possesses root storage structures similar to those found in the Chinese water chestnut, Eleocharis dulcis.

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Vascular Flora Of The Allison Prairie, Lawrence County, Illinois, Brian R. Garrard Jan 1999

Vascular Flora Of The Allison Prairie, Lawrence County, Illinois, Brian R. Garrard

Masters Theses

Allison Prairie in Lawrence County, Illinois is a five acre recreation of a gravel prairie. The Allison Prairie Restoration is the largest and best remaining example of a sand and gravel prairie in the Wabash Border Natural Division of Illinois. A total of 112 species of vascular plants representing 35 families are known to exist at the Allison Prairie Restoration (Table 1). Heterotheca camporum (Greene) Shinners (golden aster), Melilotus alba Medic. (white sweet clover), and Sporobolus asper (Michx.) Kunth (dropseed) are dominants (Table 2 and 3). There is 1 gymnosperm species, Juniperus virginiana L. (red cedar), 30 monocot species and …

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Effects Of Competition On Resource Availability And Growth Of A California Bunchgrass, Andrew R. Dyer, Kevin J. Rice Jan 1999

Effects Of Competition On Resource Availability And Growth Of A California Bunchgrass, Andrew R. Dyer, Kevin J. Rice

Faculty Publications

In California, little is known about the sensitivity of native bunchgrasses to competition or to changes in resource availability. We investigated the effect of nonnative annual vegetation on resource availability and growth of a native bunchgrass, Nassella pulchra, in a pair of factorial field experiments that incorporated effects of both interspecific and intraspecific competition as well as variation in soil depth. Plots of differing target densities and neighborhoods were used to assess changes in aboveground (light) and belowground (water) resource availability over multiple seasons in two sites with differing soil depth. N. pulchra grown without interspecific competitors grew larger …

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Effect Of Zinc Treatment On The Alleviation Of Sodium And Chloride Injury In Tomato (Lycopersicum Esculentum(L.) Mill. Cv. Lale) Grown Under Salinity, Mehmet Alpaslan, Ali İnal, Aydın Güneş, Yakup Çikili, Hesna Özcan Jan 1999

Effect Of Zinc Treatment On The Alleviation Of Sodium And Chloride Injury In Tomato (Lycopersicum Esculentum(L.) Mill. Cv. Lale) Grown Under Salinity, Mehmet Alpaslan, Ali İnal, Aydın Güneş, Yakup Çikili, Hesna Özcan

Turkish Journal of Botany

Nonsaline and saline (30 mM NaCl), Zn (10, 20, 40 mg kg -1 ) and without Zn treatment and factorial combinations of NaCl and Zn on the fresh and dry weights of the plants, and sodium (Na), chloride (Cl) and zinc (Zn) contents of both young and old leaves were determined and the effects of Zn on the Na and Cl translocation within the plants were investigated. Salinity decreased the fresh and dry weights of the plants while this effect of salinity diminished with increasing Zn levels. Na and Cl con-centrations of both young and old leaf tissues decreased with …

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An Investigation On The Morphology, Anatomy And Ecology Oforiganum Onites L.1, Ahmet Gönüz, Bilkan Özörgücü Jan 1999

An Investigation On The Morphology, Anatomy And Ecology Oforiganum Onites L.1, Ahmet Gönüz, Bilkan Özörgücü

Turkish Journal of Botany

Possible variations in the morphology, anatomy, ecology and phenology of Origanum onites L. ( Lamiaceae/Labitae) in rela-tion to altitudinal variations was studied together with the differences in etheric oil content. A decrease in the stem and lower leaf lengths was observed compared with an increase in the cortical area and vascular tissues in parallel with altitudinal increases. The number and size of stomata also varied with this factor. Etheric oil content was found to be different in relation to altitude.

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Studies On The Ecology Of Chrozophora Tinctorial. Andrubia Tinctoruml. In Western Anatolia, Süleyman Başlar, Hasan Hüseyin Mert Jan 1999

Studies On The Ecology Of Chrozophora Tinctorial. Andrubia Tinctoruml. In Western Anatolia, Süleyman Başlar, Hasan Hüseyin Mert

Turkish Journal of Botany

This study was carried out to determine the autecological and economic importance of Chrozophora tinctoria L. ( Euphorbiaceae) and Rubia tinctorumL. ( Rubiaceae) distributed in western Anatolia. A Physical and chemical analysis was performed on the soils where these plants grow and a chemical analysis of the plants was also carried out. The results obtained were assessed using regression analysis. It was found that both of the plants generally grow on loam and clayey-loam; neutral to slightly alkaline soils which are both poor and rich in calcium carbonate; slightly saline; moderately rich, rich and very rich in organic matter; rich …

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Pollen Flora Of Pakistan - Xiii. Campanulaceae, Anjum Perveen, Mohammad Qaiser Jan 1999

Pollen Flora Of Pakistan - Xiii. Campanulaceae, Anjum Perveen, Mohammad Qaiser

Turkish Journal of Botany

The pollen morphology of 10 species belonging to the 3 genera of the family Campanulaceae were investigated with a light microscope and sacanning microscope. It is eurypalynous in nature. Pollen grains are mostly oblate-spheroidal, rarely prolate-spheroidal or spheroidal, often suboblate. Tectum striate-rugulate, often subpsilate with spinules. On the basis of apertural types 2 distinct pollen types are recognized viz. Campanula latifolia - type, Codonopsis clematidea- type.

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The Flora Of The Agricultural Areas In Enez (Edirne) And Environs, Mesut Ki̇reç, Celal Yarci Jan 1999

The Flora Of The Agricultural Areas In Enez (Edirne) And Environs, Mesut Ki̇reç, Celal Yarci

Turkish Journal of Botany

This work was carried out in the agricultural areas of Enez (Edirne) and environs. The study area has suitable conditions for plant species richness such as different microclimates, soils, and intensive agricultural activities. A total of 150 taxa were identi-fied belonging to Pteridophyta (2), and Spermatophyta (148). Of these, 118 taxa of Spermatophyta are in Dicotytedoneae and 30 taxa are in Monocotyledoneae. The results show that 8 taxa are new records, 1 for Thrace, 5 for A1 square and 2 for European part of A1 square.

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Karyological Studies On Vicia Satival. Subsp. Incisa(Bieb.) Arc. Var. Incisa, Çiler Meri̇ç, Feruzan Dane Jan 1999

Karyological Studies On Vicia Satival. Subsp. Incisa(Bieb.) Arc. Var. Incisa, Çiler Meri̇ç, Feruzan Dane

Turkish Journal of Botany

Vicia sativa L. subsp. incisa (Bieb.) Arc. var. incisa was investigated karyologically (chromosome number, karyotype and mitotic division). The chromosome number of Vicia sativa subsp. incisa var. incisa was counted for the first time and it was found to be 2n=14. In the karyotype, 1 submedian (SM) and 6 subterminal (ST) chromosome pairs were found, in one of which a SAT-chromosome was detected. A satellite was on the short arm of the 3rd chromosome pair. In the cells of the root tips, the course of mitosis was regular. The presence of subsp. incisa var. incisa in the flora of Turkey …

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Barbula Glauca(Ryan) Möll., A New Record For The Moss Flora Of Turkey, Barbaros Çeti̇n Jan 1999

Barbula Glauca(Ryan) Möll., A New Record For The Moss Flora Of Turkey, Barbaros Çeti̇n

Turkish Journal of Botany

Barbula glauca (Ryan) Möll. is reported for the first time from Turkey. The locality is situated almost 35 km north of Gerze District (Sinop).

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New Floristic Records For The Squares B3 And B4 (Ilgın-Konya, Turkey), Memduh Seri̇n, Kuddisi Ertuğrul Jan 1999

New Floristic Records For The Squares B3 And B4 (Ilgın-Konya, Turkey), Memduh Seri̇n, Kuddisi Ertuğrul

Turkish Journal of Botany

No abstract provided.

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Elaeagnus Angustifolial. As A Biomonitor Of Heavy Metal Pollution, Ahmet Aksoy, Uğur Şahi̇n Jan 1999

Elaeagnus Angustifolial. As A Biomonitor Of Heavy Metal Pollution, Ahmet Aksoy, Uğur Şahi̇n

Turkish Journal of Botany

The leaves of Elaeagnus angustifolia L. (Elaeagnaceae) were tested as a possible biomonitor of heavy metal pollution in Kayseri. Concentration of Pb, Cd and Zn were determined in unwashed and washed leaves and soils. Differences between the unwashed and washed samples varied according to the metal pollutant levels. Significant correlations were obtained between the heavy metal concentrations in surface soil and washed leaf samples. E. angustifoliawas found to be a useful biomonitor of the heavy metals investigated.

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Nitrate Reductase Activity In Verbascum L. ( Scrophulariaceae) Species From The Eastern Mediterranean In Dependence On Altitude, Gürcan Güleryüz, Hülya Arslan Jan 1999

Nitrate Reductase Activity In Verbascum L. ( Scrophulariaceae) Species From The Eastern Mediterranean In Dependence On Altitude, Gürcan Güleryüz, Hülya Arslan

Turkish Journal of Botany

Nitrate reductase activity (NRA) was investigated in diferent parts of some Verbascum L. species ( Scrophulariaceae) collected from different altıtudes of Uludag Mountain, Bursa Turkey. NR activities were compared with respect to (1) different plant organs, (2) different Verbascumspecies and (3) samples collected from different altıtudes (120-1850 m). The highest levels of NRA were found for all species in the leaves. Significant differences were determined between the samples collected from different altıtudes. Despite the NRA is the highest in V. olympicum Boiss., it is the lowest in V. lagurus Fisch. & Mey. Furthermore the correlation between NRA values in aboveground …

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Lichen Flora Of Trabzon, Kenan Yazici Jan 1999

Lichen Flora Of Trabzon, Kenan Yazici

Turkish Journal of Botany

This study was performed between May 1993 and November 1995 in Trabzon. A total of 230 species and 1 variety, which belongs to the 35 families in Ascomycotina, were defined. A total of 39 species were understood to be new records for Turkey.

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A Contribution To The Moss Flora Of Western Turkey: Moss Flora Of The Kaz Mountain (Balıkesir, Turkey), Adnan Erdağ, Ahmet Yayintaş Jan 1999

A Contribution To The Moss Flora Of Western Turkey: Moss Flora Of The Kaz Mountain (Balıkesir, Turkey), Adnan Erdağ, Ahmet Yayintaş

Turkish Journal of Botany

In the present study, 484 plant specimens were collected and identified from the region. 139 taxa, belonging to 23 families and 63 genera were found. Brachythecium latifolium Kindb. is recorded as the first time to Turkish flora among the others. In addition 12 taxa are new records for square B6 according to Henderson's (1961) grid system.

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Top Senescence In Sternbergia Lutea(L.) Ker-Gawl. Ex Sprengel And Narcissus Tazettal. Subsp. Tazetta, Hamdi̇ Güray Kutbay Jan 1999

Top Senescence In Sternbergia Lutea(L.) Ker-Gawl. Ex Sprengel And Narcissus Tazettal. Subsp. Tazetta, Hamdi̇ Güray Kutbay

Turkish Journal of Botany

Sternbergia lutea (L.) Ker-Gawl. ex Sprengel and Narcissus tazetta L. subsp. tazetta are two autumnal geophytes belonging to Amaryllidaceae. N. tazetta subsp. tazetta consist of some vomitory alkaloids. S. lutea has also important alkaloids too. In this study nitrogen (N), phosphorus (P) and potassium (K) analysis were carried out in two taxa during vegetative and generative growth phases and the results belonging to vegetative and generative growth phases were compared with each other. As a result of these analysis macroelement concentrations are higher during generative growth phase in under ground parts due to "top senescence".

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Morphological, Anatomical And Ecological Studies On The Two Turkish Endemic Species Collected From Kaz Dağı (B1 Balıkesir) "Allium Sibthorpianum Schultes & Schultes Fil. And Allium Reuterianum Boiss.", İsmet Uysal Jan 1999

Morphological, Anatomical And Ecological Studies On The Two Turkish Endemic Species Collected From Kaz Dağı (B1 Balıkesir) "Allium Sibthorpianum Schultes & Schultes Fil. And Allium Reuterianum Boiss.", İsmet Uysal

Turkish Journal of Botany

This investigation englightens the morphological, anatomical and ecological characteristics of Kazdağı endemics namely Allium reuterianum Boiss. and Allium sibthorpianum Schultes & Schultes fil. (Liliaceae). A. sibthorpianum occurs in Bursa, Kütahya, Denizli, Isparta and Çanakkale (newly recorded), whereas A. reuterianum is found in Southwest Anatolia, Islands, Manisa, Denizli, Muğla, Isparta and Çanakkale (newly recorded). Root anatomy of A. sibthorpianum and A. reuterianum typically show exodermis and an empty pith. In addition in the scapes of both the species layering in the area between epidermis and cuticle results in its thickening. The leaves in both species are not hairy. Reticulate shaped open …

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A New Genus ( Mericarpaeaboiss.) Record From Turkey, Zeki̇ Aytaç, Nezaket Adigüzel Jan 1999

A New Genus ( Mericarpaeaboiss.) Record From Turkey, Zeki̇ Aytaç, Nezaket Adigüzel

Turkish Journal of Botany

Mericarpaea ciliata(Banks & Sol.) Eig ( Rubiaceae) is recorded from Turkey for the first time. It is also new genus record ( MericarpaeaBoiss.) for Turkey.

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Check-List Of Additional Taxa To The Supplement Flora Of Turkey Ii, Neri̇man Özhatay, Şükran Kültür, Nevri̇ye Aksoy Jan 1999

Check-List Of Additional Taxa To The Supplement Flora Of Turkey Ii, Neri̇man Özhatay, Şükran Kültür, Nevri̇ye Aksoy

Turkish Journal of Botany

This checklist contains a total of 168 taxa published as additions to the Flora of Turkey. It includes details of taxa neither recorded by P.H.Davis' "Flora of Turkey and the East Aegean Islands" or its Supplement, nor in the first of this series of checklists. The records in this list are based on data given in nearly 100 publications published up to the end of 1998.

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Evaluation Of Various Sunflower ( Helianthus Annuus L.) Genotypes For Agrobacterium Tumefaciens-Mediated Gene Transfer, Ekrem Gürel, Kemal Kazan Jan 1999

Evaluation Of Various Sunflower ( Helianthus Annuus L.) Genotypes For Agrobacterium Tumefaciens-Mediated Gene Transfer, Ekrem Gürel, Kemal Kazan

Turkish Journal of Botany

In this work, 10 sunflower ( Helianthus annuus L.) genotypes were evaluated for their suitability for Agrobacterium tumefaciens-mediated gene transfer based on detection of a reported gene expression (GUS). A number of factors including the type of shoot-tip explant (split vs. intact), bacterial strain/binary vector combinations and wounding intact shoot-tips by particle bombardment were examined. Genotypes showed significant differences in their transformation efficiencies ranging from 0.0 to 82.7% GUS positive explants, hybrid genotypes being more responsive to Agrobacterium infection than inbred lines. Use of split shoot-tip explants did not increase the transformation efficiency over intact explants but the AGL-1/pKIWI strain/vector …

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Pollen Morphology Of Turkish Chenopodium L. ( Chenopodiaceae), N. Münevver Pinar, Özden İnceoğlu Jan 1999

Pollen Morphology Of Turkish Chenopodium L. ( Chenopodiaceae), N. Münevver Pinar, Özden İnceoğlu

Turkish Journal of Botany

Pollen grains of 12 species of the genus Chenopodium L. ( Chenopodiaceae), of which morphological separation is problematical, have been examined in detail comparatively by using light microscopy (LM), scanning (SEM) and transmission electron microscopy (TEM). Pollen description of each taxon has been given. Pollen garins of ChenopodiumL. species examined are radially symmetrical, isopolar, pantopolyporate and spheroidal. Their exine structure is similar. In the genus, five pollen types have been defined, mainly on the basis of pollen size.

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The Plant Sociology And Ecology Of The Upper Göksu Catchment Area(Hadim-Konya) And Environs, Hayretti̇n Ocakverdi̇, Sali̇h Oflaz Jan 1999

The Plant Sociology And Ecology Of The Upper Göksu Catchment Area(Hadim-Konya) And Environs, Hayretti̇n Ocakverdi̇, Sali̇h Oflaz

Turkish Journal of Botany

The Taurus mountains area is one of the most interesting areas of Turkey as regards flora and vegetation. The region is situated on a transition zone between the Mediterranean and continental climate and contains many microclimate areas because of its topographic character. Therefore, studies on the flora and vegetation of the Taurus mountains give quite different results. The studies on the catchment area of Göksu valley and environs which exhibit Mediterranean climate and is a part of the central Tauruses were ccarried out in 1995-1996. In this study, Braun-Blanquet's floristic system principle was used and six associations (five of them …

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Nuclear Dna Contents Of Some Endemic Hedysarum L. Species, Nükhet Akpinar, Bayram Yildiz Jan 1999

Nuclear Dna Contents Of Some Endemic Hedysarum L. Species, Nükhet Akpinar, Bayram Yildiz

Turkish Journal of Botany

The nuclear DNA contents and nuclear areas of some endemic Hedysarum L. species were investigated. A significant variation in the DNA content of Hedysarum species was established. The 2C nuclear DNA amount in the Hedysarum species (x = 8) ranged from approximately 4 to 6 picograms. It was found that the variation in the 2C nuclear DNA content was not related to chromosome numbers. However, there was a very high positive linear relationship between nuclear DNA content and nuclear area.

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Vegetation Mosaic Around The Second Center Of Tourism Development In The Uludağ Mountain, Bursa, Turkey, Hülya Arslan, Gürcan Güleryüz, Mustafa Gökçeoğlu, Helmut Rehder Jan 1999

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

Turkish Journal of Botany

The vegetation mosaic around the Second Center of Tourism Development in Uludağ (Bursa) was determined by aerial photographs and Geographical Information Systems (GIS) techniques. The vegetation characteristic of the area is composed of dwarf shrub formation (Vaccinium myrtillus-Juniperus communis-comm. and Juniperus communis-comm.). In addition, a database related to the vegetation mosaic of the area was prepared.

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A Concise Taxonomic Revision Of The Genus Alopecurusl. (Gramineae), Musa Doğan Jan 1999

A Concise Taxonomic Revision Of The Genus Alopecurusl. (Gramineae), Musa Doğan

Turkish Journal of Botany

An account of 29 species and 12 subspecies identified in the genus AlopecurusL. is given including the genus description, a key for the species, species descriptions, flowering times, habitats, altitudes, type citations, citation of the specimens examined, general distributions and biogeography of the species.

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