Oxalisl. (Oxalidaceae) No Estado De Pernambuco, Brasil1
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The Gigas Effect: a Reliable Predictor of Ploidy? Case Studies in Oxalis
The gigas effect: A reliable predictor of ploidy? Case studies in Oxalis by Frederik Willem Becker Thesis presented in fulfilment of the requirements for the degree of Master of Science in the Faculty of Science at Stellenbosch University Supervisors: Prof. Léanne L.Dreyer, Dr. Kenneth C. Oberlander, Dr. Pavel Trávníček March 2021 Stellenbosch University https://scholar.sun.ac.za Declaration By submitting this thesis electronically, I declare that the entirety of the work contained therein is my own, original work, that I am the sole author thereof (save to the extent explicitly otherwise stated), that reproduction and publication thereof by Stellenbosch University will not infringe any third party rights and that I have not previously in its entirety or in part submitted it for obtaining any qualification. March 2021 …………………………. ………………… F.W. Becker Date Copyright © 2021 Stellenbosch University All rights reserved i Stellenbosch University https://scholar.sun.ac.za Abstract Whole Genome Duplication (WGD), or polyploidy is an important evolutionary process, but literature is divided over its long-term evolutionary potential to generate diversity and lead to lineage divergence. WGD often causes major phenotypic changes in polyploids, of which the most prominent is the Gigas effect. The Gigas effect refers to the enlargement of plant cells due to their increased amount of DNA, causing plant organs to enlarge as well. This enlargement has been associated with fitness advantages in polyploids, enabling them to successfully establish and persist, eventually causing speciation. Using Oxalis as a study system, I examine whether Oxalis polyploids exhibit the Gigas effect using 24 species across the genus from the Oxalis living research collection at the Stellenbosch University Botanical Gardens, Stellenbosch. -
ABSTRACT Oxalis Triangularis (A.St.-Hil) Or Commonly Known As
ABSTRACT Oxalis triangularis (A.St.-Hil) or commonly known as ‘Pokok Rama-rama’ in Malaysia is a beautiful ornamental plant which is propagated by bulbs. The plant grows to a height of 0.1 m - 0.2 m and is perfect for cultivating in pots or containers. Nowadays, with the emerging and advanced technologies, an efficient protocol has been established for a rapid multiplication of Oxalis triangularis in a large scale production under aseptic conditions. In vitro plant regeneration of Oxalis triangularis was successfully obtained in the present study via petiole and leaf as explants. The petiole explants cultured on MS medium supplemented with 0.5 mg/l α-Naphthaleneacetic acid (NAA) and 1.0 mg/l Kinetin (KIN) produced maximum number of adventitious shoots (12 shoots) while for leaf explants, the best treatment achieved on MS medium supplemented with 1.0 mg/l NAA and 1.5 mg/l 6- Benzylaminopurine (BAP) which produced a maximum of 14 shoots within 8 weeks. Comparison between in vivo plants and in vitro was observed using a Scanning Electron Microscope. The morphological features for both petiole and leaf samples have no differences. Both contain same structures of stomata and trichomes. In vitro flowering which is very important in order to improve quality and shortened physiological process of flowering was observed when adventitious shoots explants cultured on MS medium supplemented with 0.5 mg/l NAA and 0.5 mg/l BAP (90% in vitro flowering). In the synthetic seeds study, two different storage durations were tested (Day 7 and Day 30). The highest frequency of synthetic seeds production in Oxalis triangularis was recorded on Day 7 with 96.67% of conversion frequency. -
Vascular Flora of the Possum Walk Trail at the Infinity Science Center, Hancock County, Mississippi
The University of Southern Mississippi The Aquila Digital Community Honors Theses Honors College Spring 5-2016 Vascular Flora of the Possum Walk Trail at the Infinity Science Center, Hancock County, Mississippi Hanna M. Miller University of Southern Mississippi Follow this and additional works at: https://aquila.usm.edu/honors_theses Part of the Biodiversity Commons, and the Botany Commons Recommended Citation Miller, Hanna M., "Vascular Flora of the Possum Walk Trail at the Infinity Science Center, Hancock County, Mississippi" (2016). Honors Theses. 389. https://aquila.usm.edu/honors_theses/389 This Honors College Thesis is brought to you for free and open access by the Honors College at The Aquila Digital Community. It has been accepted for inclusion in Honors Theses by an authorized administrator of The Aquila Digital Community. For more information, please contact [email protected]. The University of Southern Mississippi Vascular Flora of the Possum Walk Trail at the Infinity Science Center, Hancock County, Mississippi by Hanna Miller A Thesis Submitted to the Honors College of The University of Southern Mississippi in Partial Fulfillment of the Requirement for the Degree of Bachelor of Science in the Department of Biological Sciences May 2016 ii Approved by _________________________________ Mac H. Alford, Ph.D., Thesis Adviser Professor of Biological Sciences _________________________________ Shiao Y. Wang, Ph.D., Chair Department of Biological Sciences _________________________________ Ellen Weinauer, Ph.D., Dean Honors College iii Abstract The North American Coastal Plain contains some of the highest plant diversity in the temperate world. However, most of the region has remained unstudied, resulting in a lack of knowledge about the unique plant communities present there. -
Este Trabalho Não Teria Sido Possível Sem O Contributo De Algumas Pessoas Para As Quais Uma Palavra De Agradecimento É Insufi
AGRADECIMENTOS Este trabalho não teria sido possível sem o contributo de algumas pessoas para as quais uma palavra de agradecimento é insuficiente para aquilo que representaram nesta tão importante etapa. O meu mais sincero obrigado, Ao Nuno e à minha filha Constança, pelo apoio, compreensão e estímulo que sempre me deram. Aos meus pais, Gaspar e Fátima, por toda a força e apoio. Aos meus orientadores da Dissertação de Mestrado, Professor Doutor António Xavier Pereira Coutinho e Doutora Catarina Schreck Reis, a quem eu agradeço todo o empenho, paciência, disponibilidade, compreensão e dedicação que por mim revelaram ao longo destes meses. À Doutora Palmira Carvalho, do Museu Nacional de História Natural/Jardim Botânico da Universidade de Lisboa por todo o apoio prestado na identificação e reconhecimento dos líquenes recolhidos na mata. Ao Senhor Arménio de Matos, funcionário do Jardim Botânico da Universidade de Coimbra, por todas as vezes que me ajudou na identificação de alguns espécimes vegetais. Aos meus colegas e amigos, pela troca de ideias, pelas explicações, pela força, apoio logístico, etc. I ÍNDICE RESUMO V ABSTRACT VI I. INTRODUÇÃO 1.1. Enquadramento 1 1.2. O clima mediterrânico e a vegetação 1 1.3. Origens da vegetação portuguesa 3 1.4. Objetivos da tese 6 1.5. Estrutura da tese 7 II. A SANTA CASA DA MISERICÓRDIA DE ARGANIL E A MATA DO HOSPITAL 2.1. Breve perspetiva histórica 8 2.2. A Mata do Hospital 8 2.2.1. Localização, limites e vias de acesso 8 2.2.2. Fatores Edafo-Climáticos-Hidrológicos 9 2.2.3. -
Oxalis Violacea L. Violet Wood-Sorrel
New England Plant Conservation Program Oxalis violacea L. Violet Wood-Sorrel Conservation and Research Plan for New England Prepared by: Thomas Mione Professor Central Connecticut State University For: New England Wild Flower Society 180 Hemenway Road Framingham, MA 01701 508/877-7630 e-mail: [email protected] • website: www.newfs.org Approved, Regional Advisory Council, December 2002 1 SUMMARY Violet Wood-Sorrel (Oxalis violacea L., Oxalidaceae) is a low-growing herbaceous, self-incompatible perennial that produces violet flowers in May, June and again in September. Reproduction is both sexual (with pollination mostly by bees), and asexual (by way of runners). The species is widely distributed in the United States but is rare in New England. Oxalis violacea is an obligate outcrosser: the species is distylous, meaning that there are two flower morphs (pin and thrum), with a given plant producing one morph, not both. Pin flowers are more common than thrum flowers. In New England, the habitat varies from dry to moist, and for populations to remain vigorous forest canopies must remain partially open. Succession, the growth of plants leading to shading, is a factor contributing to decline of O. violacea in New England, as are invasive species and habitat fragmentation. Fire benefits this species, in part by removing competitors. Human consumption of the leaves has been reported. Oxalis violacea has a Global Status Rank of G5, indicating that it is demonstrably widespread, abundant and secure. In Massachusetts, it is ranked as Threatened; five occurrences are current (in four towns among three counties) and 10 are historic. In Connecticut, it is listed as a species of Special Concern; 10 occurrences are current (in ten towns among six counties) and 19 are historic. -
Invasive Alien Species in Southern Africa
GISP Global Invasive Species Programme Ministry of Tourism, Environment United States Government and Natural Resources Republic of Zambia Invasive Alien Species in Southern Africa National Reports & Directory of Resources Edited by Ian A.W. Macdonald, Jamie K. Reaser, Chris Bright, Laurie E. Neville, Geoffrey W. Howard, Sean J. Murphy, and Guy Preston 1 This report is a product of a workshop entitled Prevention and Management of Invasive Alien Species: Forging Cooperation throughout Southern Africa, held by the Global Invasive Species Programme (GISP) in Lusaka, Zambia on 10-12 June 2002. It was sponsored by the U.S. Department of State, Bureau of Oceans and International Environmental Affairs (OESI) grant S-LMAQM-00-H-0167. In-kind assistance was provided by the U.S. Environmental Protection Agency. Administrative and logistical assistance was provided by the Zambian Ministry of Tourism, Environment and Natural Resources, the U.S. Embassy in Lusaka, Zambia, the Scientific Committee on Problems of the Environment (SCOPE), and the National Fish and Wildlife Foundation (NFWF), as well as all Steering Committee members. The Smithsonian Institution National Museum of Natural History and National Botanical Institute, South Africa kindly provided support during report production. The editors thank Dr Phoebe Barnard of the GISP Secretariat for her very extensive work to finalize the report. The workshop was co-chaired by the Governments of the Republic of Zambia and the United States of America, and by the Global Invasive Species Programme. Members of the Steering Committee included: Mr Lubinda Aongola (Ministry of Tourism, Environment and Natural Resources, Zambia), Mr Troy Fitrell (U.S. -
Inventory and Review of Quantitative Models for Spread of Plant Pests for Use in Pest Risk Assessment for the EU Territory1
EFSA supporting publication 2015:EN-795 EXTERNAL SCIENTIFIC REPORT Inventory and review of quantitative models for spread of plant pests for use in pest risk assessment for the EU territory1 NERC Centre for Ecology and Hydrology 2 Maclean Building, Benson Lane, Crowmarsh Gifford, Wallingford, OX10 8BB, UK ABSTRACT This report considers the prospects for increasing the use of quantitative models for plant pest spread and dispersal in EFSA Plant Health risk assessments. The agreed major aims were to provide an overview of current modelling approaches and their strengths and weaknesses for risk assessment, and to develop and test a system for risk assessors to select appropriate models for application. First, we conducted an extensive literature review, based on protocols developed for systematic reviews. The review located 468 models for plant pest spread and dispersal and these were entered into a searchable and secure Electronic Model Inventory database. A cluster analysis on how these models were formulated allowed us to identify eight distinct major modelling strategies that were differentiated by the types of pests they were used for and the ways in which they were parameterised and analysed. These strategies varied in their strengths and weaknesses, meaning that no single approach was the most useful for all elements of risk assessment. Therefore we developed a Decision Support Scheme (DSS) to guide model selection. The DSS identifies the most appropriate strategies by weighing up the goals of risk assessment and constraints imposed by lack of data or expertise. Searching and filtering the Electronic Model Inventory then allows the assessor to locate specific models within those strategies that can be applied. -
Central European Vegetation
Plant Formations in the Central European BioProvince Peter Martin Rhind Central European Beech Woodlands Beech (Fagus sylvatica) woods form the natural climax over much of Central Europe where the soils are relatively dry and can extend well into the uplands in the more southern zones. In the north, however, around Sweden it is confined to the lowlands. Beech woodlands are often open with a poorly developed shrub layer, Characteristic ground layer species may include various helleborines such as Cephalanthera damasonium, C. longifolia and C. rubra and sedges such as Carex alba, whilst in others, grasses like Sesleria caerlea or Melica uniflora may predominate, but in some of the more acidic examples, Luzula luzuloides is likely to dominate. There are also a number of endemic ground layer species. For example, in Carpathian beech woods endemics such as Dentaria glandulosa (Brassicaceae), Symphytum cordata (Boraginaceae) and the fern Polystichum braunii (Dryopteridaceae) may be encountered. Fine examples of primeaval beech woods can be found in the limestone Alps of lower Austria including the famous ‘Rothwald’ on the southeastern slopes of Dürrentein near Lunz. These range in altitude from about 940-1480 m. Here the canopy is dominated by Fagus sylvatica together with Acer pseudoplatanus, Picea abies, Ulmus glabra, and on the more acidic soils by Abies alba. Typical shrubs include Daphne mezereum, Lonicera alpigena and Rubus hirtus. At ground level the herb layer is very rich supporting possibly up to a 100 species of vascular plants. Examples include Adenostyles alliariae, Asplenium viridis, Campanula scheuchzeri, Cardamine trifolia, Cicerbita alpina, Denteria enneaphyllos, Euphorbia amygdaloides, Galium austriacum, Homogyne alpina, Lycopodium annotinum, Mycelis muralis, Paris quadrifolia, Phyteuma spicata, Prenanthes purpurea, Senecio fuchsii, Valeriana tripteris, Veratrum album and the central European endemic Helliborus niger (Ranunculaceae). -
Floristic Investigations of Historical Parks in St. Petersburg, Russia(
URBAN HABITATS, VOLUME 2, NUMBER 1 • ISSN 1541-7115 Floristic Investigations of Historical Parks in St. Petersburg, Russia http://www.urbanhabitats.org Floristic Investigations of Historical Parks * in St. Petersburg, Russia Maria Ignatieva1 and Galina Konechnaya2 1Landscape Architecture Group, Environment, Society and Design Division, P.O. Box 84, Lincoln University, Canterbury, New Zealand; [email protected] 2V.L. Komarov Botanical Institute, Russian Academy of Science, 2 Professora Popova Street , St. Petersburg, 197376, Russia; [email protected] floristic investigations led us to identify ten plant Abstract From 1989 to 1998, our team of researchers indicator groups. These groups can be used for future conducted comprehensive floristic and analysis and monitoring of environmental conditions phytocoenological investigations in 18 historical in the parks. This paper also includes analyses of parks in St. Petersburg, Russia. We used sample plant communities in 3 of the 18 parks. Such analyses quadrats to look at plant communities; we also are useful for determining the success of past studied native species, nonnative species, “garden restoration projects in parks and other habitats and escapees,” and exotic nonnaturalized woody species for planning and implementing future projects. in numerous types of park habitat. Rare and Key words: floristic and phytoencological endangered plants were mapped and photographed, investigations, St. Petersburg, Russia, park, flora, and we analyzed components of the flora according anthropogenic, anthropotolerance, urbanophyle to their ecological peculiarities, reaction to human influences (anthropotolerance), and origin. The entire Introduction The historical gardens and parks of St. Petersburg, park flora consisted of 646 species of vascular plants Russia, are valued as monuments of landscape belonging to 307 genera and 98 families. -
Геоботаническое Картографирование 2018 Vegetation Mapping 2018 С
Геоботаническое картографирование 2018 Vegetation mapping 2018 С. 120–136. P. 120–136. Е.А. ВОЛКОВА, В.Н. ХРАМЦОВ КРУПНОМАСШТАБНОЕ КАРТИРОВАНИЕ РАСТИТЕЛЬНОСТИ ДЛЯ ЦЕЛЕЙ СОЗДАНИЯ НОВЫХ ОСОБО ОХРАНЯЕМЫХ ПРИРОДНЫХ ТЕРРИТОРИЙ В САНКТ- ПЕТЕРБУРГЕ E.A. Volkova, V.N. Khramtsov. Large-scale vegetation mapping for the purposes of creating new specially protected natural areas in Saint-Petersburg Ботанический институт им. В.Л. Комарова РАН 197376, Санкт-Петербург, ул. Профессора Попова, 2; [email protected] В границах Санкт-Петербурга сохранились довольно большие лесные массивы, типичные для подзоны южной тайги, включающие большое разнообразие растительных сообществ, в ко- торых произрастают редкие виды растений. Одной из таких территорий в южной части города, проектируемой в качестве природного заказника, посвящена эта статья. С целью изучения раз- нообразия растительных сообществ и их распространения была составлена крупномасштабная карта актуальной растительности проектируемого заказника. Растительный покров на карте отражен 75 основными номерами легенды, знаки при номерах позволили показать 122 карти- руемых подразделения. На основании составленной карты проведен площадной анализ всех типов растительных сообществ, выявлены типичные и наиболее ценные с природоохранной точки зрения объекты растительного покрова. Ключевые слова: Санкт-Петербург, особо охраняемые природные территории, картирование растительности, ценные природные объекты. Key words: Saint-Petersburg, specially protected natural areas, vegetation mapping, valuable natural objects. -
SPECIES IDENTIFICATION GUIDE National Plant Monitoring Scheme SPECIES IDENTIFICATION GUIDE
National Plant Monitoring Scheme SPECIES IDENTIFICATION GUIDE National Plant Monitoring Scheme SPECIES IDENTIFICATION GUIDE Contents White / Cream ................................ 2 Grasses ...................................... 130 Yellow ..........................................33 Rushes ....................................... 138 Red .............................................63 Sedges ....................................... 140 Pink ............................................66 Shrubs / Trees .............................. 148 Blue / Purple .................................83 Wood-rushes ................................ 154 Green / Brown ............................. 106 Indexes Aquatics ..................................... 118 Common name ............................. 155 Clubmosses ................................. 124 Scientific name ............................. 160 Ferns / Horsetails .......................... 125 Appendix .................................... 165 Key Traffic light system WF symbol R A G Species with the symbol G are For those recording at the generally easier to identify; Wildflower Level only. species with the symbol A may be harder to identify and additional information is provided, particularly on illustrations, to support you. Those with the symbol R may be confused with other species. In this instance distinguishing features are provided. Introduction This guide has been produced to help you identify the plants we would like you to record for the National Plant Monitoring Scheme. There is an index at -
The Vascular Plant Colonization on Decaying Picea Abies Logs In
Eur J Forest Res DOI 10.1007/s10342-016-1001-8 ORIGINAL PAPER The vascular plant colonization on decaying Picea abies logs in Karkonosze mountain forest belts: the effects of forest community type, cryptogam cover, log decomposition and forest management 1 2 2 Monika Staniaszek-Kik • Jan Zarnowiec_ • Damian Chmura Received: 13 April 2015 / Revised: 12 September 2016 / Accepted: 27 September 2016 Ó The Author(s) 2016. This article is published with open access at Springerlink.com Abstract Among the vascular plants there is a lack of the value method indicated that of the 34 found species, ten typical epixylous species but they are a constant compo- could be treated as indicator species for the forest com- nent on decaying wood. Their distribution patterns on this munities that were analyzed. The statistical analysis did not kind of substrate seem to be the least known among pho- confirm significant role of coarse woody debris as a sec- totrophs. A total of 454 dead logs of Picea abies were ondary habitat for rare and protected vascular plants. analyzed with regard to cover of vascular plants and the independent morphometric features of logs and altitude. Keywords Spruce Á Central Europe Á Decomposed wood Á Four types of forest were compared, and the frequency and Montane forests Á Forest management cover of the most frequent species were analyzed across the forest communities along the decomposition stage. Among the logs that were studied, 292 were colonized by vascular Introduction plants. The highest number of colonized logs was recorded in Calamagrostio villosae-Piceetum and the lowest in a The role of dead wood in a forest ecosystem is well rec- deciduous beech forest of the Fagetalia order.