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Articles 181 - 190 of 190
Full-Text Articles in Botany
A New Record For Turkey: Malcolmia Intermedia C.A.Mey. (Brassicaceae), Murat Ünal, Fevzi̇ Özgökçe
A New Record For Turkey: Malcolmia Intermedia C.A.Mey. (Brassicaceae), Murat Ünal, Fevzi̇ Özgökçe
Turkish Journal of Botany
Malcolmia intermedia C.A.Mey. (Cruciferae/Brassicaceae) is recorded for the first time (A9 Kars) for the flora of Turkey. A description, scan, and distribution map of the species are given.
Conservation In Developing Countries, Shahina A. Ghazanfar
Conservation In Developing Countries, Shahina A. Ghazanfar
Turkish Journal of Botany
The Convention on Biological Diversity (CBD) set a number of targets to work towards by 2010 in order to aid conserve the world´s biodiversity. Several countries are now aiming at ex-situ and in-situ programmes for the protection and conservation of plant species through the Global Strategy for Plant Conservation targets (GSPC). Is it possible to achieve these targets in rapidly developing countries where the usage of land for urban expansion and agriculture to support basic human needs holds priority? How can conservation and development be sustainable? I take examples from a rapidly developing country in the Arabian Peninsula to show …
Use Of Passive Integrated Transponders In Hatchling Texas Horned Lizards, Scott E. Henke
Use Of Passive Integrated Transponders In Hatchling Texas Horned Lizards, Scott E. Henke
The Prairie Naturalist
The Texas horned lizard (Phrynosoma cornutum) is a Texas state-threatened species and acquisition of data related to the species' ecology is essential. To accomplish this task individual animals need to be marked. Many marking techniques are available for lizards, however the majority of techniques have been tested on adults only. Studies involving hatchling and juvenile horned lizards are scarce due to problems associated with marking and relocating individuals in these age classes. I demonstrated that injection of passive integrated transponders (PIT's) can safely be used as a marking method in young Texas horned lizards. Thirty-two captive bred hatchling lizards were …
Sex-Specific Feeding Rates And Provisioning Of Fruit To Nestling Bell's Vireo, Greg H. Farley
Sex-Specific Feeding Rates And Provisioning Of Fruit To Nestling Bell's Vireo, Greg H. Farley
The Prairie Naturalist
Provisioning of fruit to nestlings and possible sex-specific differences in feeding rate have not been reported for Bell's vireo (Vireo bellii; Brown 1993). While studying nesting ecology of Bell's vireo on Konza Prairie Biological Station, Geary and Riley counties, Kansas, I quantified feeding rate by sex and food type delivered to nestlings. Sex was determined by capturing adults with mist-nets and inspecting for a cloacal protuberance, as well as conducting behavioral observations of uniquely-marked individuals. Males sing regularly while moving around territories, as well as during incubation (Nolan 1960). I assigned "female" to the individual in these socially …
Ua37/13 Faculty Personal Papers Charles Crume, Wku Archives
Ua37/13 Faculty Personal Papers Charles Crume, Wku Archives
WKU Archives Collection Inventories
The series includes papers and publications related to Crume's work as a naturalist as well as reproductions of some of his artwork and biographical data.
Spiderwort Is Vnps Wildflower Of The Year, W. John Hayden
Spiderwort Is Vnps Wildflower Of The Year, W. John Hayden
Biology Faculty Publications
The VNPS 2008 Wildflower of the Year (WOY) is spiderwort (Tradescantia virginiana). This herbaceous perennial plant occurs throughout much of the eastern portion of the U.S. and is widespread in Virginia. Spiderwort blooms from April to July. The small flowers occur in clusters at the ends of the stems, atop several elongate bracts. Flowers have three petals that range from purple to rose or, rarely, white. Densely hairy stamens provide, perhaps, the easiest way to recognize spiderworts. Also, stalks of spent flowers droop below the flower cluster yielding an aspect reminiscent of spindly spider legs.
2008 Wildflower Of The Year: Virginia Spiderwort, Tradescantia Virginiana, W. John Hayden
2008 Wildflower Of The Year: Virginia Spiderwort, Tradescantia Virginiana, W. John Hayden
Biology Faculty Publications
Spiderwort is an herbaceous perennial that arises from a cluster of rather stout overwintering roots. Stems may be solitary or more commonly clumped, and usually grow unbranched, reaching heights up to 40 cm tall. Stems are smooth or bear scattered short hairs. Leaves are 2—5 per stem, attached by means of a leaf sheath that is 13 cm long. Leaf blades are dull green, elongate, ending in a gradually tapered tip, flat or keeled, smooth (without hairs), and 1—3.5 dm long by 0.5—2.5 cm wide. Flowers occur in tight clusters located at the stem apex; bracts similar to the leaves …
Microspore Wall Morphogenesis And Orbicule Ultrastructure Of Isoetes, Khalid Alarid
Microspore Wall Morphogenesis And Orbicule Ultrastructure Of Isoetes, Khalid Alarid
Biological Sciences Theses & Dissertations
The microspore wall morphogenesis and orbicule ultrastructure of Isoetes were studied using electron microscopy. Microspore wall morphogenesis in five species of Isoetes (I. appalachiana, I. engelmannii, I. hyemalis, I. piedmontana, and an undescribed species from York Co., VA, USA) was studied using scanning and transmission electron microscopy. Results show that they generally have the same developmental stages in terms of microspore wall morphogenesis. The mature microspore wall consisted of four layers: perispore, paraexospore, exospore and endospore. Paraexospore formation began during the tetrad stage. The exospore was then formed between the paraexospore and the plasma membrane. During the free spore …
Whole-Plant Mineral Partitioning Throughout The Life Cycle In Arabidopsis Thaliana Ecotypes Columbia, Landsberg Erecta, Cape Verde Islands, And The Mutant Line Ysl1ysl3, Brian M. Waters, Michael A. Grusak
Whole-Plant Mineral Partitioning Throughout The Life Cycle In Arabidopsis Thaliana Ecotypes Columbia, Landsberg Erecta, Cape Verde Islands, And The Mutant Line Ysl1ysl3, Brian M. Waters, Michael A. Grusak
Department of Agronomy and Horticulture: Faculty Publications
Minimal information exists on whole-plant dynamics of mineral flow through Arabidopsis thaliana or on the source tissues responsible for mineral export to developing seeds. Understanding these phenomena in a model plant could help in the development of nutritionally enhanced crop cultivars. A whole-plant partitioning study, using sequential harvests, was conducted to characterize growth and mineral concentrations and contents of rosettes, cauline leaves, stems, immature fruit, mature fruit hulls, and seeds of three WT lines (Col-0, Ler, and Cvi) and one mutant line (Col-0::ysl1ysl3). Shoot mineral content increased throughout the life cycle for all minerals, although tissue-specific …
The Plant Ontology Database: A Community Resource For Plant Structure And Developmental Stages Controlled Vocabulary And Annotations, Shulamit Avraham, Chih-Wei Tung, Katica Ilic, Pankaj Jaiswal, Elizabeth A. Kellogg, Susan Mccouch, Anuradha Pujar, Leonore Reiser, Seung Yon Rhee, Martin M. Sachs, Mary L. Schaeffer, Lincoln Stein, Peter Stevens, Leszek Vincent, Felipe Zapata, Doreen Ware