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Tuesday, November 17, 2020 | History

2 edition of Pollen morphological studies in the Gentianaceae. found in the catalog.

Pollen morphological studies in the Gentianaceae.

S. T. Nilsson

Pollen morphological studies in the Gentianaceae.

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Published by Universitetet, Almqvist & Wiksell (distr.) in Uppsala, Stockholm .
Written in English

    Subjects:
  • Gentianaceae -- Palynotaxonomy.

  • Edition Notes

    SeriesActa Universitatis Upsaliensis ;, 165, Acta Universitatis Upsaliensis., 165.
    Classifications
    LC ClassificationsQ64 .A63 no. 165
    The Physical Object
    Pagination18 p.
    Number of Pages18
    ID Numbers
    Open LibraryOL5730435M
    LC Control Number70513808

    Paperback. Pub Date Pages: Language: Chinese Publisher: China Agricultural University Press Shanxi honey bee pollen and pollen morphology studies. tells the story of Shanxi Province. unique topography and climatic conditions gave birth to the rich nectar plant resources. provides a lot of quality for our bee production.   A detailed assessment of Poaceae pollen morphology was performed using light and scanning electron microscopy (LM and SEM, respectively), digital image processing and multivariate data analysis of species from the montane savanna (canga vegetation) of the Serra dos Carajas region in the southeastern Amazon to discriminate the lower taxonomic levels Cited by: 2. The genus Macrocarpaea, with species and two hybrids of m herbs, shrubs, epiphytes and small trees to 10 m tall, is the largest genus of the tribe Helieae of the gentian family (Gentianaceae).Species of Macrocarpaea have diurnal and nocturnal pollinators, visited during the day by hummingbirds, insects and butterflies, and at night by bats, moths and many Family: Gentianaceae. Erdtman G () Pollen morphology and plant taxonomy. Angiosperms. Almquist & Wiksell, Stockholm ; Erdtman GEA () An introduction to a scandinavian pollen flora - II. Almquist & Wiksell, Uppsala: ; Fægri KEA () Text book of pollen analysis. Scandinavian University Books, Munksgaard:


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Pollen morphological studies in the Gentianaceae. by S. T. Nilsson Download PDF EPUB FB2

Pollen morphological features in the Gentianinae General account The size of the pollen grains, varies greatly from the smallest ones in Halenia corniciilafa with polar axis ,LL (1’1.

14) to e.g., those of certain species of Gentinna, sccts. Frigida, Stenogyne (polar asis up to 63 p). (). Pollen Morphological Studies in the Gentianaceae—Gentianinae. Grana Palynologica: Vol. 7, No. 1, pp.

Cited by:   The pollen morphology of the Gentianaceae (pollen is 3-colporate throughout the family; Nilsson, b) traditionally is rather well documented (starting with Gilg, ) and has also made significant contributions to long-standing Cited by: 6.

Taxonomic Significance of Pollen Morphology in the Tribe Helieae (Gentianaceae) from the Atlantic Forest, Brazil Author: Sousa, Hian Carlos Ferreira de, Santos, Jéssica da Conceição, Gonçalves-Esteves, Vania, Mendonça, Cláudia Barbieri Ferreira Source: Palynology v no.4 pp.

ISSN: Subject:Author: Hian Carlos Ferreira de Sousa, Jéssica da Conceição Santos, Vania Gonçalves-Esteves, Cláudia Barbier.

Part of the The Families and Genera of Vascular Plants book series (FAMILIES K.B. The evolution of flower morphology in Gentianaceae-Swertiinae and the roles of key innovations and niche width for the diversification of Gentianella Pollen morphological studies in the Gentianaceae-Gentianinae.

Grana Palynol., Ser. 2, 7: 46– shrubs or trees) (Struwe & Albert ). Pollen morphology and morphological and cytological characteristics have been considered important in taxonomic studies of many Gentianaceae genera (Raynal ; Nilsson ); however, Gilg () published a classification of tribes and subtribes based primarily on palynologic al features.

Handbook of Palynology: Morphology - Taxonomy - Ecology An Introduction to the Study of Pollen Grains and Spores (Italian) Hardcover – January 1, by G. Erdtman (Author) See all formats and editions Hide other formats and editions.

Price New from Used from Author: G. Erdtman. Already byGilg had based parts of his key to the genera of the Gentianaceae on differences in pollen morphology. Subse- quently Andersen (), Erdtman et al. (), Nilsson (, a), Kuprianova and Alyoshina () and Tarnavaschi and Serbanescu-Jitariu () described pollen grains in more detail.

Pollen Morphology and Plant Taxonomy: Angiosperms Volume 1 of Pollen Morphology and Plant Taxonomy Volume 1 of Pollen Morphology and Plant Taxonomy: An Introduction to Palynology: Author: Gunnar Erdtman: Edition: illustrated, reprint, revised: Publisher: Brill Archive, ISBN:Length: pages: Subjects5/5(2).

Palynology of Gentianaceae is a life-long target of Nilsson's research. As the subject of his doctorate thesis, he made the first comprehensive observation on palynology of Gentianaceae (Nilsson, ).

The study presented in this book is his last contribution as he regrettably passed away at the time the book was : Yong-Ming Yuan, Jason R. Grant. XACUM L., a genus of the family Gentianaceae, commonly known as “Binara” or “Ginihiriya” in Sri Lanka, contains tropical, annual or perennial herbs.

In the newest classification, the Gentianaceae has been divided into six tribes. The Exaceae, one of them, represents a small tribe with six genera and species in which the – ExacumsFile Size: KB. Pollen morphological studies in the Gentianaceae. Simple Pollen morphological studies in the Gentianaceae.

Nilsson, Siwert. Uppsala University, Disciplinary Domain of Science and Technology. nbn:se:uu:diva OAI: oai::uu DiVA, id: diva Available from: Created: Open. Pollen morphology of the saprophytic genera Bartonia, Cotylanthera, Leiphaimos, Obolaria, Voyria, and Voyriella (Gentianaceae) was studied by light and electron microscopy.

A pollen morphology study of the Gentianaceae Juss. of Reserva Florestal Adolpho Ducke (Manaus, Brazil) was performed. The pollen grains of the studied species varied morphologically in their pollen units (tetrads or monads), size (small, medium and large), shape (oblate, suboblate, oblate spheroidal, spheroidal.

pollen morphology by early Botanists has demonstrated the potential value of palynology in phylogeny and plant taxonomy. The contribution of Woodehouse, () through the publication of the book “pollen grains” marked the beginning of purposeful studies on pollen morphology in Size: KB.

The development and structure of the microsporangium and pollen in 22 taxa from the Gentianaceae have been studied and literature on the subject reviewed.

Formation of the microsporangial wall. exclusively on pollen morphology. Pollen morphology is of great significance in taxonomy, phylogeny, palaeobotany, aeropalynology and pollen allergy. Pollen of various plants representing potential source of nectar and pollen for the honeybees is an important pre-requisite for the developing apiary (Kalpana and Ramanujam, ).

Pollen study has. Abstract. Roraimaea (Gentianaceae: Helieae) is a new angiosperm genus from northern Brazil and southern Venezuela. This genus differs prominently from other taxa of the Gentianaceae tribe Helieae by its long-tubular, orange to red corollas, and deeply cleft styles with filiform lobes.

Traditionally, pollen characters have been used. Abstract. The development and structure of the microsporangium and pollen in 22 taxa from the Gentianaceae have been studied and literature on the subject reviewed.

Formation of the microsporangial wall follows the dicotyledonous sequence. In Exacum and Cotylanthera, the anthers dehisce by pores, and the endothecium is by: Plant Botany An introduction to plant anatomy, morphology and physiology.

This guide explains the following topics: Life domains and phylogeny of tree growth on Earth, Plant Cell, Tissues, Roots, The stem, Leaf, Propagation and reproduction of woody plants, Basics of woody plant physiology, Respiration, Photorespiration, Water regime of woody plants, Mineral nutrition of.

Pollen grains of 30 taxa of the genus Salvia, belonging to sections Salvia, Horminum, Drymosphace, Plethiosphace and Hemisphace from Turkey were examined by light (LM) and scanning electron microscopy (SEM).

Detailed pollen morphological characteristics are provided for these taxa. Among the studied taxa, S. verticillata subsp. verticillata from sect.

Hemisphace has the smallest pollen Cited by: OSWALD ET AL. – PITCHER-PLANT POLLEN 2 ABSTRACT. Despite nearly a century of research, the systematic relationships among North American pitcher plants in the genus Sarracenia (Sarraceniaceae) remain this study we analyzed pollen morphology of the 11 currently recognized species of Sarracenia and examined how variations in key pollen.

The pollen morphology varies among different plant species; occur in varying shapes and forms. They also show variation in symmetry, exine structure and sculpture.

Cassia sp., Euphorbia sp., Terminalia sp., Melastoma sp. and Pongamia pinnata pollen are spherical, pollen of family Malvaceae are echinate. Pollen Unit (Monad) Research study in pollen morphology conducted in DLSU-Dasma “Documentation and Identification of Pollen Found at DLSU-Dasma” (Bognot, et.

al. ) Family Pollen Size (µm) Pollen Shape Pollen Unit Pollen Sculpturing Begoniaceae Oblate Monad Striate Lythraceae Oblate Monad Striate Rubiaceae Spheroidal. The embryology of Swertia minor Knobl.

(Gentianinae Gentianaceae) was studied. Features of its development are tetrasporangiate anthers, dicotyledonous type sporangial wall formation, glandular anther tapetum and its dual origin, simultaneous cytokinesis in microsporocytes, tricolporate two-celled pollen, unilocular ovary, forked parietal placentae, tenuinucellar Cited by: 5.

Pollen and Spore Morphology/ Plant Taxonomy by Erdtman, G. and a great selection of related books, art and collectibles available now at accommodated within Gentianaceae since completely comparable phyto-chemicals are produced (Jensen, ; Jensen & Schripsema, ).

However,it isequally and ironically true,with reference to Jussieu,that the pollen of Potaliais more like that of some Apocynaceae rather than Gentianaceae, whereas Fagraeapollen is readily accommodated among.

ADVERTISEMENTS: Morphological characteristics of pollen grains have been categorised into different groups: 1. Pollen Units 2. Polarity 3. Symmetry 4. Shape 5. Size 6. Apertures 7. Sub-Divisions of the Pollen Surface 8. Sporoderm Stratification 9.

Exine Ornamentation ‘LO’ Analysis. Characteristic # 1. Pollen Units: The pollen grains are produced within the anther of. Books to Borrow. Top American Libraries Canadian Libraries Universal Library Community Texts Project Gutenberg Biodiversity Heritage Library Children's Library.

Open Library. test Halesowen Chronicle Newspaper Mk News Newspaper Kidderminster Chronicle Newspaper Harlow Star Newspaper Books by Language Additional Collections. Abstract. A pollen morphology study of the Gentianaceae Juss. of Reserva Florestal Adolpho Ducke (Manaus, Brazil) was performed.

The pollen grains of the studied species varied morphologically in their pollen units (tetrads or monads), size (small, medium and large), shape (oblate, suboblate, oblate spheroidal, spheroidal, prolate spheroidal and prolate), polarity.

The pollen morphology and ultrastructure of 20 species, representing eight genera of the Magnoliaceae are described based on observations with light, scanning and transmission electron microscopy.

The family represents a homogeneous group from a pollen morphological. Pollen morphology is one of the most important and fundamental branches of palynology. It will not be an exaggeration if pollen morphology is referred to as the mother of palynological studies.

Proper identification of pollen and spores both of living and fossil plants is a prerequisite for exploiting their applications. The present study has five major aims: (1) to investigate the presence of orbicules in Gentianaceae; (2) to provide detailed descriptions of the morphology and ultrastructure of orbicules present; (3) to construct an orbicule‐typology; (4) to investigate pollen exine characters by examining the possible parallels between pollen exine and orbicule wall ornamentation; and Cited by: Centaurium pulchellum is an annual herb native to Europe, but introduced in South America, where it is widely used in the preparation of digestive infusions and bitter drinks.

In this species, a wide variation in the aperture pattern of pollen grains was reported and has been attributed to environmental factors or irregularities at meiosis. For this reason, cytological and palynological studies Cited by: 5. Parsimony‐based phylogenetic analyses of the neotropical tribe Helieae (Gentianaceae) are presented, including 22 of the 23 genera and 60 species.

This study is based on data from morphology, palynology, and seed micromorphology ( structural characters), and DNA sequences (matK, trnL intron, ITS).Cited by:   He was appointed assistant in to the Swedish Council of Natural Sciences in Palynological Laboratory in Stockholm under the leadership of Professor Gunnar Erdtman.

He had a special interest in pollen morphological studies of the families Apocynaceae and Gentianaceae. He selected the latter family for his Ph.D.

degree topic. An Introduction to Pollen Analysis Pollen Morphology and Plant Taxonomy. Angiosperms. Popularized fossil pollen analysis in the s and s through both his English language publications and a lecture-collecting tour in North America Knut Fægri - – Norwegian Text-Book of Modern Pollen Analysis (4 editions Pollen Morphology of Egyptian Malvaceae: An Assessment of Taxonomic Value Plate 1.

Pollen morphology of the studied taxa of Malvaceae 1- Abelmoschus esculentus x 2-Hibiscus trionum x 3- Hibiscus rosa-sinensis x 4- Hibiscussp.

x 5- Gossypium barbadence x 6- Lagunaria patersonii x   Mészáros S, De Laet J, Goethals V, Smets E, Nilsson S () Cladistics of Gentianaceae: a morphological approach. In: Struwe L, Albert VA (eds) Gentianaceae: systematics and natural history.

Cambridge University Cited by: 2. According to pollen morphology studies on selected taxa of Brassicaceae by (Pinar et al., ), the ornamentation of Hesperis L.

isoblate-spheroidal, spheroidal and subprolate, radially symmetric, isopolar, tricolpate, reticulate, rarely tetracolpate, polar axis is m and equatorial axis m, outline is elliptic in the. The present study provides new insights into the pollen composition of honey samples from the central region of Shanxi, North China.

A total of 61 pollen types from 19 honeys produced by Apis mellifera and Apis cerana cerana were identified, including 56 entomophilous pollen types (e.g., crop plants: Glycine max, Vicia sp., Fagopyrum esculentum Cited by: Skip to Main ContentCited by: 1.Photographs of pollen matched with the source plant: here is a sampling of our photomicrographs of pollen common in the various areas of the world.

In this article are samples from our library of overphotographs of mold, pollen, allergens, and other airborne and forensic particles available in our bioaerosol laboratory.

Here are a few samples of some common pollen .