Botany Commons^™

Taxonomy And Biogeography Of Sundaland Gardenia (Rubiaceae)., Low Yee Wen

Student Works (2010-2019)

In Southeast Asia, the genus Gardenia J.Ellis (Rubiaccae) is poorly understood and documented due to a lack of country revisions, contentious species delimitations and accumulation of poorly identified material in herbaria. This study reviewed the taxonomic history and position of the genus, and revised the taxonomy of Sundaland species (including those of Sumatra. the Malay Peninsula, Java_ Borneo, Palawan and adjacent islands). It includes a survey and cladistic study of morphological characteristics, and phylogenetic ana lyses using two chloroplast regions (atpB-rbcL and trnT-F) and the nuclear ITS region of representative species from Sundaland and adjoining regions. Twelve species are native …

The Effects Of Gibberellic Acid And Kinetin On Overcoming The Effects Of Juglone Stress On Seed Germination And Seedling Growth, İrfan Terzi̇, İsmai̇l Kocaçalişkan

Turkish Journal of Botany

Juglone (5-hydroxy-1,4-naphthoquinone) is an allelochemical responsible for walnut allelopathy. The effects of gibberellic acid (GA_{3}) and kinetin (KIN) on overcoming the effects of juglone stress on seed germination and seedling growth were investigated in barley, wheat, cucumber, alfalfa, and tomato. Seeds pre-treated with plant growth regulators were used to test their effects on the alleviation of juglone stress. It was observed that seed germination in tomato and wheat was inhibited by juglone and that the plant growth regulators alleviated it significantly. Elongation and dry weight of the seedlings of all the species used in the study were reduced significantly by …

Using Vegetation Units As Salinity Predictors In The Lower Cheliff Algeria, Adda Ababou, Mohammed Chouieb, Mohammed Khader, Khalladi Mederbal, Djamel Saidi

Turkish Journal of Botany

The Lower Cheliff plain is among the largest salted soils in north-western Algeria. In order to establish the relationships between the main soil factors and plant species in this stressed ecosystem, 133 relevés related to soil and vegetation were realized. Soil variables measured included electrical conductivity and calcium carbonate. The 133 relevés were arranged in clusters using k-means classification. The similarity analysis used to examine the variation in vegetation assemblage structure showed significant differences in taxonomical composition among groups of relevés. The phi coefficient of fidelity used then to extract the different vegetation units and to measure species concentration in …

Morphological And Anatomical Studies Of Annual Taxa Of Sideritis L. (Lamiaceae), With Notes On Chorology In Turkey, Ayşegül Güvenç, Hayri̇ Duman

Turkish Journal of Botany

Sideritis L. (Lamiaceae) includes approximately 150 species of annual and perennial plants distributed mainly in the Mediterranean region. In Turkey, 44 species (55 taxa) are native. Three of these species (5 taxa) are annual and these taxa are included in Burgsdorfia and Hesiodia sections. This study was undertaken to investigate the morphological and anatomical properties of 5 annual taxa of Sideritis. Full descriptions and illustrations of these taxa are given, along with some additional information regarding their ecology and phytogeography. The anatomy of the leaf blade, midrib, and stem of the taxa are described and illustrated.

Taxonomy Of Campanula Tomentosa Lam. And C. Vardariana Bocquet From Turkey, Emi̇ne Alçitepe, Kemal Yildiz

Turkish Journal of Botany

The taxonomical status of Campanula tomentosa Lam. and C. vardariana Bocquet, belonging to the section Quinqueloculares (Boiss.) Phitos, which have important taxonomical problems, was reviewed in this study. Furthermore, morphological, anatomical leaf surface, and palynological features of these 2 species were examined in detail. Habit, shape of leaves, calyx, corolla, stamen, pistil, and seed micromorphological features as morphological characters; and pollen diameter, pore diameter, spinule length, and number, ornamentation, etc. as palynological characters, were examined and discussed. An identification key for the species is presented according to the results obtained. Following this extensive study, the mentioned problems of C. tomentosa …

Clonal Propagation Of Dorystoechas Hastata Via Axillary Shoot Proliferation, Bengi̇ Erdağ, Yelda Emek, Serap Aydoğan

Turkish Journal of Botany

A protocol for the in vitro seed germination, seedling development, and axillary shoot propagation of Dorystoechas hastata Boiss. & Heldr. ex Bentham is described. By employing sterilised seeds that were transferred onto in vitro media, the effects of various in vitro media, photoperiods, and temperatures on germination were investigated. At the end of these experiments, a final protocol was determined for the in vitro germination of D. hastata seeds. With this protocol, the highest germination rate was obtained with distilled water supplemented with vitamins and 1 mg L^{-1} of gibberellic acid (GA_{3}), with a 16:8 photoperiod at 24 ± 2 …

Towards Cloning A Tyrosinase Gene From Pitayas, Kurt J. Chamberlain

Honors Program Theses

Betalains, such as those produced by pitayas, are water-soluble nitrogen-containing pigment molecules (Gandia-Herrero et al., 2005). In most families of the Caryophyllales, betalains replace anthocyanins, which are the pigment molecules found in all other families of flowering plants (Strack et al., 2001). Betalains accumulate in the flowers, fruits, and occasionally vegetative tissues of these plants (Strack et al., 2001). Depending on the structure of the molecule, betalains are classified as either betacyanins or betaxanthins. Betacyanins contribute to red-violet coloration, while betaxanthins contribute to the yellow-orange coloration found only in a limited number of plant species (Gandia-Herrero et al., 2005). The …

Don't Judge A Book By Its Cover: The Curious Case Of Wild Ginger Pollination, W. John Hayden

Biology Faculty Publications

What pollinates wild ginger? This seems like an easy question. The inconspicuous little flowers are held close to the forest floor, often completely hidden by a dense canopy of ginger leaves above. Flower color is rather drab, dominated by brown and maroon hues. Wind pollination seems completely unlikely and flowers pollinated by bees, butterflies, moths, or hummingbirds are always much more showy and accessible to these flying creatures. Flies, however, given their natural inclination to seek carrion as a food source for their babies (i.e. maggots), are often attracted to brown and maroon flowers. And because their actual quarry, animal …

Elizabeth Findley Shores Collection Of Roland M. Harper, Zach S. Henderson Library Special Collections

Finding Aids

This collection consists of articles and letters-to-the-editor written by Roland M. Harper for publication in scholarly journals. Sometimes in typescript, his works focus on botany, conservation, and social conditions, primarily in the southeastern United States. Spanning 1906-1965, additional documents, photographs and audio visual materials pertaining to Roland M. Harper’s family history are included. The collection’s creator, Elizabeth Findley Shores, is the author of the biography On Harper's Trail: Roland McMillan Harper, Pioneering Botanist of the Southern Coastal Plain (2008).

Find this collection in the University Libraries' catalog.

In Vitro Cultures For Production Of Zerumbone And Mass Propagation In Zingiber Zerumbet Smith., Farah Diana Idris

Student Works (2010-2019)

Lempoyang (Zingiber zerumbet Smith.) is an important plant which has been propagated because of its medicinal values. Lempoyang is widely used as a folk medicine in Asian countries such as Malaysia, Indonesia, India and Taiwan. Zerumbone, a cyclic sesqueterpene found to be the major and main bioactive compound that gives great potential in medicinal purposes especially in the treatment of chronic diseases based on recent reports. Recently, it was found that zerumbone inhibited the growth of human leukemia cell line, HL-60 cell. Even though there are so many great values contain in the lempoyang but it is hard to obtain …

Sfa Gardens Newsletter, Winter 2010, Sfa Gardens, Stephen F. Austin State University

SFA Gardens Newsletters

No abstract provided.

Studies On Cytotoxicity Induced By Des And Sa In Vicia Faba Var. Major, Mohd Gulfishan, Ainul Haq Khan, Tarik Ahmad Bhat

Turkish Journal of Botany

The effect of diethyl sulphate (DES) and sodium azide (SA) was studied on the meiotic behaviour of Vicia faba L. var. major in the M1 generation. Five concentrations of SA (0.01%, 0.02%, 0.03%, 0.04%, and 0.05%) were combined with DES (0.02%) to study the synergistic and antagonistic effects of these 2 mutagens. A dose-dependent increase in chromosomal aberrations was recorded in populations treated with both the mutagens individually and their combination doses. The main chromosomal aberrations were stickiness, precocious separations, univalents, multivalents, laggards, unequal separations of chromosomes, micronuclei, disturbed polarity, multinucleate condition, and cytomixis. The stickiness and stray bivalents at …

Effects Of Moist Chilling, Gibberellic Acid, And Scarification On Seed Dormancy In The Rare Endemic Pedicularis Olympica (Scrophulariaceae), Serap Kirmizi, Gürcan Güleryüz, Hülya Arslan, Fatma Selcen Sakar

Turkish Journal of Botany

We investigated the germination requirements of a rare endemic plant species, Pedicularis olympica Boiss. (Scrophulariaceae), which grows in wet habitats on Uludağ Mountain, Turkey. We studied the effects of scarification, moist chilling (+4 °C) for 15 days, different doses of gibberellic acid (GA_{3}; 100, 150, and 250 ppm) and combined hormone and moist chilling treatments under dark (20 °C) and photoperiod (20/10 °C; 12/12 h, respectively) conditions. GA_{3} was able to break dormancy. The highest germination rate was found in the seeds treated with 250 ppm GA_{3}; 64% of these seeds germinated when treated with moist chilling and incubated in …

Seed Morphology Of Ebenus L. Species Endemic To Turkey, Fatma Bayrakdar, Zeki̇ Aytaç, Zeki̇ye Suludere, Selami̇ Candan

Turkish Journal of Botany

In the present study, seed surface morphology of species of the genus Ebenus L. in Turkey, all of which are endemic, was studied. E. plumosa var. speciosa has the biggest and E. laguroides var. laguroides has the smallest seeds. The seed shapes are spheroid in E. reesei, orbiculate in E. pisidica, and oblong-spheroid in others. Ornamentation is striate in E. macrophylla, rugose in E. haussknechtii, and reticulate or multi-reticulate in others. Microphylle is subterminal in all Turkish Ebenus species.

Pollen Morphology Of The Genus Fritillaria L. (Liliaceae) In Turkey, Mehtap Tekşen, Zeki̇ Aytaç, Nur Münevver Pinar

Turkish Journal of Botany

Pollen grains of 39 taxa of the genus Fritillaria L. in Turkey were examined by light and scanning electron microscopy. Detailed pollen morphological characteristics are given for these taxa. Our investigation shows that the sculpturing of the exine provides valuable characters for separating species. In particular, sculpturing of the exine at the proximal face turned out to be taxonomically important. Six types of ornamentation were determined: reticulate, reticulate-perforate, suprareticulate, rugulate-reticulate, psilate-perforate, and perforate. On the basis of exine sculpturing, the sulcus membrane, and the apex sulcus, 5 main pollen types are recognised.

Classification Of Some Plant Species According To Grime’S Strategies In A Quercus Cerris L. Var. Cerris Woodland In Samsun, Northern Turkey, Mahmut Kilinç, Nesli̇han Karavi̇n, Hamdi̇ Güray Kutbay

Turkish Journal of Botany

This study was carried out on 2 permanent plots of Quercus cerris L. var. cerris woodland in the Kurupelit region of Samsun, northern Turkey. Grime's CSR strategies were determined for 85 plant species from the 2 study plots (61 and 50 species from plot 1 and plot 2, respectively) according to the method that was applied. Most of the plant species in both plots had secondary and tertiary strategies, and this suggests that plants were exposed to more than one pressure factor. In both plots, CR (competitor-ruderal) was the most common strategy.

The Diatoms Of Asartepe Dam Lake (Ankara), With Environmental And Some Physicochemical Properties, Tahi̇r Atici, Emi̇ne Olcay Obali

Turkish Journal of Botany

The shoreline benthic diatoms of Asartepe Dam Lake were identified from different habitats (epipelic, epiphytic, and epilithic) at 7 sampling stations between April 2003 and June 2004. In the investigation, a total of 93 taxa were identified. Of those, Cymbella affinis Kütz., Navicula radiosa Kütz., Ulnaria ulna (Nitzsch) Compère, Pinnularia borealis Ehrenb., Amphora ovalis (Kütz.) Kütz., Cyclotella ocellata Pant. and Nitzschia dissipata (Kütz.) Grunow were observed and abundant at all stations. Some physical and chemical water quality parameters were measured and correlated with biological parameters.

The Effect Of Drying And Submersion Pretreatment On Adventitious Shoot Regeneration From Hypocotyl Explants Of Flax (Linum Usitatissimum L.), Mustafa Yildiz, Sebahatti̇n Özcan, Cansu Telci̇ Kahramanoğullari, Si̇bel Day, Hande Özat

Turkish Journal of Botany

Hypocotyl explants of 3 flax cultivars were cultured for adventitious shoot regeneration in 3 different ways. Two pretreatment applications were compared with the routinely applied conventional regeneration protocol of culturing explants directly on Murashige and Skoog (MS) medium containing 1 mg L^{-1} 6-benzylaminopurine (BAP) and 0.02 mg L^{-1} naphthalene acetic acid (NAA). In the first pretreatment application, explants kept in a sterile cabin under an air flow for 30 min were immersed in MS solution containing 1 mg L^{-1} BAP and 0.02 mg L^{-1} NAA for 15 min; then pretreated explants were cultured on MS medium without any growth regulators …

An Account On The Floral Dimorphism And Ecology Of The Genus Moltkiopsis I.M.Johnst. (Boraginaceae) In Saudi Arabia, Turki Alturki, Jacob Thomas

Turkish Journal of Botany

A brief account on the morphology and ecology of the monotypic genus Moltkiopsis I.M.Johnst. (Boraginaceae) is given. An overview of the genus with notes on heterostyly, communities, soil, regeneration, vernacular names, etc. is presented. Variations present in some of the populations of Moltkiopsis ciliata (Forssk.) I.M.Johnst., particularly in the floral parts, are also explained in detail.

Comparison Of The Epiphytic Lichen Communities Growing On Various Tree Species On Mt. Uludağ (Bursa, Turkey), Şule Öztürk, Şaban Güvenç

Turkish Journal of Botany

A total of 48 epiphytic lichen species were found on the various tree species (Abies nordmanniana (Stev.) Spach subsp. bornmuelleriana (Mattf.) Coode & Cullen, Fagus orientalis Lipsky, and Pinus nigra Arnold. subsp. pallasiana (Lamb.) Holmboe) that formed communities on the north-west, extending from 1300 to 1600 m altitudes, of Mt. Uludağ in Bursa. Twenty-five epiphytic lichen species that occur on more than 4 sample trees were statistically analysed. The most frequent species were Pseudevernia furfuracea L. (Zopf.), Hypogymnia tubulosa (Schaer.) Hav., Parmelia sulcata Taylor, Lecanora chlarotera Nyl., and Evernia prunastri (L.) Ach., in descending order. Indicator species for Fagus orientalis …