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Wednesday, November 11, 2020 | History

2 edition of Floral development of 10- and 20-stamen morphotypes of Crataegus section Douglasii found in the catalog.

Floral development of 10- and 20-stamen morphotypes of Crataegus section Douglasii

Rodger Courtney Evans

Floral development of 10- and 20-stamen morphotypes of Crataegus section Douglasii

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  • 13 Currently reading

Published by National Library of Canada in Ottawa .
Written in English

    Subjects:
  • Hawthorns -- Reproduction.,
  • Hawthorns -- Morphogenesis.

  • Edition Notes

    Statementby Rodger Courtney Evans.
    The Physical Object
    Paginationxii, 161 leaves :
    Number of Pages161
    ID Numbers
    Open LibraryOL15457370M
    ISBN 100315961198

      Key Terms. stipe: the stem of a kelp; raphe: a ridge or seam on an organ, bodily tissue, or other structure, especially at the join between two halves or sections; saprobe: an organism that lives off of dead or decaying organic material. created from development of nuclear weapons) is a major concern for the WIPP due to their long half-lives, significant radiotoxicity, and unknown mobility in the WIPP environment. In the most likely WIPP release scenario, human intrusion (cuttings, cavings, spallings) can lead to direct. This section needs expansion. You can help by adding to it. (January ) Binomial name Location Achromobacter spp: Large intestine, small intestine (Ileon) Acidaminococcus fermentans: Large intestine Acinetobacter calcoaceticus: Large intestine Actinomyces spp: Mouth, small and large intestine Actinomyces viscosus. tures between 15° C. and ° C. (59° and ° F.), a range of less than 10 degrees. The optimum for the best and greatest development of scab appeared to obe about 20 o C. ( F.), which is also the optimum found by Faw- cett (4) for the fungus in culture.

    A, Transverse section through a pedicel showing 10 main vascular bundles; 1 bundle has branched ('*&). X H, Transverse section through the receptacle of a staminate flower just above the vast'ular plate, showing 2 cycles of vascular bundles that traverse the perianth tube. X C, Trans-.


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Floral development of 10- and 20-stamen morphotypes of Crataegus section Douglasii by Rodger Courtney Evans Download PDF EPUB FB2

Floral development of 10‐ and 20‐stamen morphotypes in Crataegus section Douglasii (Rosaceae: Maloideae) Rodger C. Evans. Corresponding Author. E-mail address: [email protected] Center for Biodiversity and Conservation Biology, Royal Ontario Museum, Queen's Park, Toronto, Ontario, Canada, M5S by: FLORAL DEVELOPMENT OF AND STAMEN MORPHOTYPES IN CRATAEGUS SECTION DOUGLASII (ROSACEAE: MALOIDEAE)1 RODGER C.

EVANS2 AND TIMOTHY A. DICKINSON Center for Biodiversity and Conservation Biology, Royal Ontario Museum, Queen's Park, Toronto, Ontario, Canada M5S 2C6; and Department of Botany, University of Toronto, 25 Willcocks Street. PDF | Crataegus section Douglasii exhibits variation in stamen number per flower typical for the genus throughout North America.

To understand the | Find, read and cite all the research you. Differences in the numbers of stamens and styles per flower are conspicuous features of variation in North American hawthorns (Crataegus L.). Variation in stamen number between individuals is discontinuous, with modes of approximately 20 and 10 (or fewer).

In North American black-fruited sectionDouglasii Loudon the stamen morphotype is exclusively polyploid, whereas the stamen Cited by: Floral development of 10‐ and 20‐stamen morphotypes in Crataegus section Douglasii (Rosaceae: Maloideae), American Journal of Botany, /jtbx, 83, 8, (), ().

Wiley Online LibraryCited by: Crataegus spp. Crataegus (hawthorn) and the closely related genus Mespilus North American black-fruited hawthorns (Crataegus section Douglasii Loud.): II.

Floral development of and stamen morphotypes. American Journal of Botany Floral development of and stamen morphotypes of Crataegus section Douglasii Loud." American Journal of Botany 83(8): (). Variation in floral construction, breeding system correlates, and their possible evolutionary significance in Crataegus section Douglasii Loud." [full text.

Floral development of and stamen morphotypes of Crataegus section Douglasii Loud." American Journal of Botany 83(8): (). Kampny, T. Dickinson & N. Dengler. "Quantitative floral development in Pseudolysimachion (Scrophulariaceae. Floral development of and stamen morphotypes in Crataegus section Douglasii (Rosaceae: Maloideae) Timothy A.

Dickinson; Crataegus section Douglasii exhibits variation in. Floral development of and stamen morphotypes in Crataegus section Douglasii Evans, R. C.; Dickinson, T.

The origin of the apple subfamily (Maloideae; Rosaceae) is clarified by DNA sequence data from duplicated GBSSI genes. Floral development of and stamen morphotypes in Crataegus section Douglasii. Amer. Bot. – Article Google Scholar Evans R. and Campbell C. The origin of the apple subfamily (Maloideae; Rosaceae) is clarified by DNA sequence data from duplicated GBSSI genes.

Amer. Bot. This book has been cited by the following publications. This list is generated based on data provided by CrossRef. Endress, Peter K. Floral development of the divergent endemic Hawaiian genus Schiedea (Caryophyllaceae), with special emphasis on the floral nectaries.

TAXON, Vol. 61, Issue. 3. Evans RC, Dickinson TA (). North American black-fruited hawthorns. Floral development of and stamen morphotypes in Crataegus section Douglasii (Rosaceae: Maloideae). American Journal of Botany 83(8) Gasser S, Beers K (). Pistil development. Plant Cell 5(10): Gyan KY, Woodell SRJ ().

Evans RC, Dickinson TA. North American black-fruited hawthorns. Floral development of and stamen morphotypes in Crataegus section Douglasii (Rosaceae: Maloideae). Bot. ISI, Google Scholar. The Late Cretaceous fossil site at Big Cedar Ridge (BCR; late Campanian, Ma), located in the Bighorn Basin, Wyoming, USA, contains a flora preserved in situ in a volcanic ash tuff over an organic-rich paleosol.

The BCR flora is irregularly but extensively exposed along a ~4 km north-south transect and records a lowland flora that grew on a coastal delta on the western shore of the. The Class C Floral Organ Identity genes are necessary for the proper development of the stamens and carpels normally found in the third Floral development of 10- and 20-stamen morphotypes of Crataegus section Douglasii book fourth whorls of the flower.

The Class A and C activities are mutually antagonistic, meaning in Class C mutants, the Class A. INTRODUCTION. The Rosaceae is a large sub-cosmopolitan family of about 95 genera and species.

It is located mainly in the temperate and warm areas of the Northern Hemisphere (Mabberley, ).However, Heywood, stated that the family consists of genera and species.

Among the large genera in the family are Potentilla L. ( species), Prunus L. ( species) and Crataegus.

Floral development of and stamen morphotypes in Crataegus section Douglasii (Rosaceae K. Bachmann Genetic and Nongenetic Factors Influencing Deviations from Five Pappus Parts in a Hybrid between Microseris douglasii and M. bigelovii. Pollen of the cultivars was collected randomly between 8 and 10 a.m.

from February till April. 4′,6-Diamidinophenylindole (DAPI, μL mL −1 of stock solution ( μg mL −1)) staining and fluorescence microscopy were used to study male gametophyte development. To analyse the movement of vegetative and generative nuclei, pollen was.

Pollen traps were installed on at least three colonies per site. Pollen traps are designed to dislodge pollen loads from honey bee legs as they enter their colony, which fall into collection trays (Delaplane et al., ).Traps were installed for at least 24 hr and in some cases for an additional 24 hr to increase the amount or quality (rain homogenized % of pollen pellet samples) of.

European honey bees Apis mellifera are important commercial pollinators that have suffered greater than normal overwintering losses since in North America and Europe. Contributing factors likely include a combination of parasites, pesticides, and poor nutrition.

We examined diet diversity, diet nutritional quality, and pesticides in honey bee‐collected pollen from commercial colonies in. The SEM investigation of nudibranch cerata material exhibits endobacterial morphotypes found in 12 out of 13 species tested: Aeolidia papillosa, Berghia caerulescens, Coryphella brownii, Coryphella lineata, Coryphella verrucosa, Cuthona amoena, Facelina coronata, Flabellina pedata, Dendronotus frondosus, Doto coronata, Tritonia plebeia and Janolus cristatus.

The objective of this study was to identify the major volatile compounds and their relative concentrations in flowers of different chrysanthemum cultivars and their wild relatives.

The volatile organic components of fresh flowers were analyzed using a headspace solid-phase microextraction coupled with gas chromatography-mass spectrometry.

In total, volatile organic components were detected. North American black-fruited hawthorns (Crataegus section Douglasii Loud.): II Floral development of and stamen morphotypes in Crataegus section Douglasii (Rosaceae: Maloideae).

American J. Botany Love, R. and M. Feigen. Interspecific hybridization between native and naturalized Crataegus (Rosaceae) in western Oregon. (10) Haemophilus influenzae is a frequent secondary invader to viral influenza, and was named accordingly.

The bacterium was the leading cause of meningitis in infants and children until the recent development of the Hflu type B vaccine. Haemophilus influenzae.

Gram stain. This book also contains reviews on the specific use of these techniques in functional studies on the genetic control of seed, leaf, root, nodule, floral and fruit development in M. truncatula. Written for the highly successful Methods in Molecular Biology series format, chapters contain the kind of detailed description and implementation advice.

with modes of approximately 20 and 10 (or fewer). In North American black-fruited section Douglasii LOUDON the 1 0-stamen morphotype is exclusively polyploid, whereas the stamen morphotype comprises both diploids and polyploids.

Polyploidy is associated with apospory, self-fertility, and varying degrees of pollen sterility. Bacteria - Bacteria - Classification by morphology, biochemistry, and other features: Although genetic divergence highlights the evolutionary relationships of bacteria, morphological and biochemical features of bacteria remain important in the identification and classification of those organisms.

Indeed, bacteria are classified on the basis of many characteristics. Floral structure of Angiosperms. The outstanding and most significant feature of the flowering plants (and that which sets them out from other vascular plants) is the flower.

Understanding the flower structure and names of the parts is important as it is the most important set of characters for both recognizing and keying species, genera. The normal flora stimulate the development of certain tissues, i.e., the caecum and certain lymphatic tissues (Peyer's patches) in the GI tract.

The caecum of germ-free animals is enlarged, thin-walled, and fluid-filled, compared to that organ in conventional animals. Also, based on the ability to undergo immunological stimulation, the.

As the crop responds well to manuring, add tonnes of well rotten FYM per acre. Apply 50 kg of Nitrogen, kg P. and 80 kg K. O as a basal dose. Spray GA3 at 50 ppm at 30, 45 and 60 days after planting to increase the flower yield. Irrigation Management. The frequency of irrigation depends on the stage of growth, soil and.

Kingdom FungiNutritional Type HeterotrophMulticellularity All, except yeasts Unicellular, filamentous,Cellular Arrangement fleshyFood Acquisition Method AbsorptiveCharacteristic Features Sexual and asexual sporesEmbryo Formation None Structure of fungi 1) The Structure - Hyphae Hyphae = tubular units of construction Tubular Hard.

Floral surveys ranked, from highest to lowest in diversity, fallow, cranberry, apple, and blueberry sites. Floral development in 10‐ and 20‐ stamen morphotypes of Crataegus section douglasii. MSc thesis, University of Toronto. FAO (). Pesticides use [online]. Materials and Methods.

Crataegus L. is a genus of approximately species of woody plants, part of a mostly fleshy-fruited clade (tribe Maleae Small) within an expanded subfamily Amygdaloideae Arn.

(Rosaceae) (Potter et al. ; McNeill et al. ).Crataegus is taxonomically complex because, while the subgeneric classification of the genus into taxonomic sections and series (Phipps et al. A total of 27 EM morphotypes were described, with 5 unique EM morphotypes found in northern hardwood forests, 10 unique morphotypes found in spruce fir forests, and 12 found in both forest types.

Low species evenness was found, with one to two morphotypes comprising most of the root tips and the other morphotypes appearing rarely.

plant development can only be inferred by the phb and phv mu-tant phenotypes. Using a forward-genetics approach, we have identified a miRNA that confers a developmental phenotype in Arabidopsis. This miRNA, miR (Park et al., ), causes early flowering and de-fects in floral organ identity when overexpressed.

The predicted target of miR In this section, you will examine several fixed slides of bacteria, some of which cause human diseases of great importance. Procedure B 1. Obtain a slide of a typical bacillus, coccus and sprillum bacteria. Make clear sketches for each.

Make clear sketches, determine the size and the disease, if any, for each of the following: a. Salmonella. Start studying Zoology Chapter 16 - Phylum Annelida - Clade Errantia.

Learn vocabulary, terms, and more with flashcards, games, and other study tools. Chloramphenicol-resistant mutants of Tetrahymena pyriformis were obtained after mutagenesis with nitrosoguanidine at an estimated frequency of mutants per mutagenized cell.

The mutants are still partially sensitive to chloramphenicol and have a lowered growth rate, compared to the wild type strain, in rich medium without chloramphenicol. The genetic analysis described here indicates that. FLORA, the scientific botanical journal with the longest uninterrupted publication sequence (since ), considers manuscripts in a range of areas of botany which appeal to a broad international scientific journal publishes original contributions and review articles on plant structure (morphology and anatomy), plant developmental biology (ontogeny), phytogeography (including.

The chlorate-resistant mutant cr88 is defective in photomorphogenesis, as shown by the phenotypes of long hypocotyls in red light and yellow cotyledons under all light conditions. A subset of light-regulated genes is expressed at subnormal levels in cr To analyze further the role that CR88 plays in photomorphogenesis, we investigated the genetic interactions between cr88 and mutants of two.Rotifera (1,+ species) Nemertea (+ species) Ctenophora (+ species) Hemichordata (50+ species) Phyla that are eumetozoans.

All but porifera. Phyla that are diploblastic. Cnidaria and Ctenophora. Phyla that are triploblastic. All but Cnidaria, Ctenophora, and Porifera.PP64CHSchulzeLefert ARI 25 March Structure and Functions of the Bacterial Microbiota of Plants Davide Bulgarelli, 1Klaus Schlaeppi, Stijn Spaepen, 1,2 Emiel Ver Loren van Themaat, and Paul Schulze-Lefert1 1Max Planck Institute for Plant Breeding Research, D Cologne, Germany; email: [email protected]