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Articles 631 - 660 of 4790
Full-Text Articles in Life Sciences
Vitis Aestivalis F.Michx., Gordon C. Tucker
Vitis Aestivalis F.Michx., Gordon C. Tucker
Lysimachia Ciliata L., P. Harwood
Vitis Riparia Michx., Martin G. Bennett
Lysimachia Ciliata L., P. Harwood
Lysimachia Ciliata L., Paul B. Marcum
Lysimachia Ciliata L., P. Harwood
Vitis Vulpina L., Gordon C. Tucker
Vitis Vulpina L., Gordon C. Tucker
Vitis Aestivalis F.Michx., Gordon C. Tucker
Lysimachia Thyrsiflora L., Steven D. Glenn
Acer Rubrum Wats., Kerry Barringer
Influence Of Reproductive And Environmental Factors On Population Size .. Of Wild Hyacinth [Camassia Angusta (Engelm.· And A. Gray) Blank. (Liliaceae)], An Illinois Endangered Species, Kevin Franken, Janice Coons, Henry Owen, Eric Smith, John Ebinger
Influence Of Reproductive And Environmental Factors On Population Size .. Of Wild Hyacinth [Camassia Angusta (Engelm.· And A. Gray) Blank. (Liliaceae)], An Illinois Endangered Species, Kevin Franken, Janice Coons, Henry Owen, Eric Smith, John Ebinger
Faculty Research & Creative Activity
Wild hyacinth (Camassia angusta) is a perennial species native to mesic prairies of the midwestern and south-central United States. In Illinois, the only extant population of this state-endangered species is in a small section of degraded black-soil prairie along a railroad track right-of-way south of Elwin, Macon County. The objectives of this study were to determine the population status, seed production, and effects of scarification and stratification on germination of C. angusta. The population was surveyed from 1990 to 2007. A survey of other plant species present was conducted in 1999. The site consisted of approximately 75% native and 25% …
Influence Of Reproductive And Environmental Factors On Population Size .. Of Wild Hyacinth [Camassia Angusta (Engelm.· And A. Gray) Blank. (Liliaceae)], An Illinois Endangered Species, Kevin M. Franken, Janice M. Coons, Henry R. Owen, Eric L. Smith, John E. Ebinger
Influence Of Reproductive And Environmental Factors On Population Size .. Of Wild Hyacinth [Camassia Angusta (Engelm.· And A. Gray) Blank. (Liliaceae)], An Illinois Endangered Species, Kevin M. Franken, Janice M. Coons, Henry R. Owen, Eric L. Smith, John E. Ebinger
Faculty Research & Creative Activity
Wild hyacinth (Camassia angusta) is a perennial species native to mesic prairies of the midwestern and south-central United States. In Illinois, the only extant population of this state-endangered species is in a small section of degraded black-soil prairie along a railroad track right-of-way south of Elwin, Macon County. The objectives of this study were to determine the population status, seed production, and effects of scarification and stratification on germination of C. angusta. The population was surveyed from 1990 to 2007. A survey of other plant species present was conducted in 1999. The site consisted of approximately 75% native and 25% …
Morus Alba L., John E. Ebinger
Comparative Vegetative Anatomy And Systematics Of Laeliinae (Orchidaceae), William Stern, Barbara Carlsward
Comparative Vegetative Anatomy And Systematics Of Laeliinae (Orchidaceae), William Stern, Barbara Carlsward
Faculty Research & Creative Activity
Laeliinae are one of the most prominent orchid subtribes, with c. 40 genera and nearly 1500 species, and contain a disparate group of taxa with widely varying morphological features. There does not appear to be a complex of characters to which one can refer in order to delineate the subtribe as a whole. Thus, it was thought that vegetative anatomy might provide clues to the monophyly of the group. The microscopic structure of the leaves, stems and roots of representatives of most of the genera was studied. It was concluded that the anatomy lacks overall uniformity and that vegetative characters …
Comparative Vegetative Anatomy And Systematics Of Laeliinae (Orchidaceae), William Louis Stern, Barbara S. Carlsward
Comparative Vegetative Anatomy And Systematics Of Laeliinae (Orchidaceae), William Louis Stern, Barbara S. Carlsward
Faculty Research & Creative Activity
Laeliinae are one of the most prominent orchid subtribes, with c. 40 genera and nearly 1500 species, and contain a disparate group of taxa with widely varying morphological features. There does not appear to be a complex of characters to which one can refer in order to delineate the subtribe as a whole. Thus, it was thought that vegetative anatomy might provide clues to the monophyly of the group. The microscopic structure of the leaves, stems and roots of representatives of most of the genera was studied. It was concluded that the anatomy lacks overall uniformity and that vegetative characters …
Viola Sororia Willd., Bob Edgin
Acer Platanoides L., Matthew Pace
Viola Sororia Willd., Martin Bennett
Claytonia Virginica L., Gordon C. Tucker
Thermodynamics Of Effector Binding To Hemocyanin: Influence Of Temperature, Ariane Pott, Michael A. Menze, Manfred K. Grieshaber
Thermodynamics Of Effector Binding To Hemocyanin: Influence Of Temperature, Ariane Pott, Michael A. Menze, Manfred K. Grieshaber
Faculty Research & Creative Activity
Hemocyanins are allosterically regulated oxygen carriers freely dissolved in the blood of many crustaceans. The natural modulator urate accumulates under hypoxic conditions in the hemolymph of Homarus vulgaris, and increases the oxygen affinity of the respiratory pigment. Other non-physiological effectors such as caffeine, dimethylxanthines and methylxanthines are also known to modulate the oxygen-binding properties of hemocyanin. In order to gain insight into the thermodynamic driving forces of these interactions we analyzed the binding of several urate analogs to dodecameric hemocyanin at different temperatures by employing isothermal titration calorimetry (ITC). All investigated non-physiological effectors including caffeine, dimethylxanthines and methylxanthines bind exothermically …
Evaluation Of Glyphosate-Tolerant Soybean Cultivars For Resistance To Bacterial Pustule, Lopa Goradia, Glen Hartman, Steven L. Daniel
Evaluation Of Glyphosate-Tolerant Soybean Cultivars For Resistance To Bacterial Pustule, Lopa Goradia, Glen Hartman, Steven L. Daniel
Faculty Research & Creative Activity
Xanthomonas axonopodis pv. glycines causes bacterial pustule of soybean, which is a common disease in many soybean-growing areas of the world and is controlled by a single recessive gene (rxp gene) commonly found in many conventional glyphosate-sensitive soybean cultivars. Since glyphosate-tolerant cultivars are commonly planted today, there has been no information about whether these new cultivars have bacterial pustule resistance. The goal of this study was to screen glyphosate-tolerant soybean cultivars for resistance to X. axonopodis pv. glycines. Three experiments were completed to evaluate resistance. In experiment 1, 525 commercial glyphosate-tolerant cultivars from 2001 were inoculated with X. axonopodis pv. …
Botany At Eastern Illinois University, Marissa C. Jernegan, Nancy E. Coutant, Janice M. Coons
Botany At Eastern Illinois University, Marissa C. Jernegan, Nancy E. Coutant, Janice M. Coons
Faculty Research & Creative Activity
Eastern Illinois University was established in 1899, and from its beginning the importance of the botanical sciences was recognized. Two terms of botany were required for the four year program. Dr. Otis W. Caldwell, a botanist, was one of the original faculty members. He taught all of the biology courses and initiated the acquisition of a greenhouse. Caldwell was the first in a series of talented and dedicated botany professors including Edgar N. Transeau, Ernest L. Stover, Hiram F. Thut and John E. Ebinger. These and many other professors incorporated a field component into almost all classes. This dedication to …
Natural History Notes: Rhinocheilus Lecontei Tesselatus (Longevity), Stephen J. Mullin
Natural History Notes: Rhinocheilus Lecontei Tesselatus (Longevity), Stephen J. Mullin
Faculty Research & Creative Activity
No abstract provided.
Demographics Of A Geographically-Isolated Population Of Threatened Salamander (Caudata: Ambystomatidae) In Central Illinois, Stephen J. Mullin, Sarabeth Klueh
Demographics Of A Geographically-Isolated Population Of Threatened Salamander (Caudata: Ambystomatidae) In Central Illinois, Stephen J. Mullin, Sarabeth Klueh
Faculty Research & Creative Activity
Amphibian populations that use small isolated wetlands are often small in size, susceptible to stochastic extinction processes, and have little to no contact with other populations. One can ascertain the persistence of such populations only by obtaining data that allow the prediction of future changes in population’s size, and propensity to achieve a sustainable number of individuals. The number of metamorphosing larvae leaving a pond predicts the viability of a salamander population, and thus, the number recruited into the terrestrial adult population. The Jefferson Salamander, Ambystoma jeffersonianum, is a listed threatened species in Illinois, occurring at fewer than 15 ponds …
Thermoregulation Of Male Elaphe Spiloides In An Agriculturally-Fragmented Forest In Illinois, C. Drew Foster, Sarabeth Kleuh, Stephen J. Mullin
Thermoregulation Of Male Elaphe Spiloides In An Agriculturally-Fragmented Forest In Illinois, C. Drew Foster, Sarabeth Kleuh, Stephen J. Mullin
Faculty Research & Creative Activity
Anthropogenic forest fragmentation increases the amount of edge habitat. Although edges are harsh environments for many native species, ratsnakes often prefer this habitat. We examined thermoregulatory effectiveness of Central Ratsnakes (Elaphe spiloides) using forest edges preferentially to determine if edge preference is driven by increased thermoregulatory efficiencies. Six male subjects were located every 1-2 days using radio-telemetry and temperature sensitive transmitters. Subjects did not thermoregulate more efficiently in edges than in forest. Snakes were thermoconformers in both habitat types suggesting edge preference might be driven by other factors.
Vegetative Anatomy And Systematics Of Triphorinae (Orchidaceae), Barbara S. Carlsward, William Louis Stern
Vegetative Anatomy And Systematics Of Triphorinae (Orchidaceae), Barbara S. Carlsward, William Louis Stern
Faculty Research & Creative Activity
Triphorinae represents a group of three anatomically simple genera, the structural features of which are unspecialized. The anomocytic stomatal pattern occurs in all genera; it predominates in Triphora . A foliar hypodermis, sclerenchyma, fibre bundles and stegmata are absent. The mesophyll is homogeneous. The exodermal and endodermal cells in the roots are entirely thin-walled and tilosomes are absent. However, there are anatomical modifications that appear to be unique: root hairs in Monophyllorchis are borne on velamenal buttresses and, in Psilochilus , they arise endogenously. In the root vascular system of Psilochilus , the metaxylem occurs as a circumferential band. The …
Sucrose Phosphate Synthase Expression Influences Poplar Phenology, Thomas Canam, Ji-Young Park, Kyu-Young Kang, Faride Unda, Shawn Mansfield
Sucrose Phosphate Synthase Expression Influences Poplar Phenology, Thomas Canam, Ji-Young Park, Kyu-Young Kang, Faride Unda, Shawn Mansfield
Faculty Research & Creative Activity
The objective of this study was to manipulate the intracellular pools of sucrose, and investigate its role in regulating plant growth, phenology (leaf senescence and bud break) and fibre development. This objective was achieved by differentially expressing an Arabidopsis (Arabidopsis thaliana L. Heynh.) sucrose phosphate synthase (SPS) gene in hybrid poplar (Populus alba · Populus grandidentata Michx.), a model system for tree biology with substantial industrial relevance in the context of short rotation forestry and a target bioenergy crop. Phenotypic differences were evident in the transgenic trees, as both the timing of bud flush and leaf senescence were altered compared …
Botany At Eastern Illinois University, Marissa Jernegan, Nancy Coutant, Janice Coons
Botany At Eastern Illinois University, Marissa Jernegan, Nancy Coutant, Janice Coons
Faculty Research & Creative Activity
Eastern Illinois University was established in 1899, and from its beginning the importance of the botanical sciences was recognized. Two terms of botany were required for the four year program. Dr. Otis W. Caldwell, a botanist, was one of the original faculty members. He taught all of the biology courses and initiated the acquisition of a greenhouse. Caldwell was the first in a series of talented and dedicated botany professors including Edgar N. Transeau, Ernest L. Stover, Hiram F. Thut and John E. Ebinger. These and many other professors incorporated a field component into almost all classes. This dedication to …