The Dates of Letters to and from Darwin's Correspondents Are Listed In
Total Page：16
File Type：pdf, Size：1020Kb
Load more
Recommended publications
-
Evolution of Unusual Morphologies in Lentibulariaceae (Bladderworts and Allies) And
Annals of Botany 117: 811–832, 2016 doi:10.1093/aob/mcv172, available online at www.aob.oxfordjournals.org REVIEW: PART OF A SPECIAL ISSUE ON DEVELOPMENTAL ROBUSTNESS AND SPECIES DIVERSITY Evolution of unusual morphologies in Lentibulariaceae (bladderworts and allies) and Podostemaceae (river-weeds): a pictorial report at the interface of developmental biology and morphological diversification Rolf Rutishauser* Institute of Systematic Botany, University of Zurich, Zurich, Switzerland * For correspondence. E-mail [email protected] Received: 30 July 2015 Returned for revision: 19 August 2015 Accepted: 25 September 2015 Published electronically: 20 November 2015 Background Various groups of flowering plants reveal profound (‘saltational’) changes of their bauplans (archi- tectural rules) as compared with related taxa. These plants are known as morphological misfits that appear as rather Downloaded from large morphological deviations from the norm. Some of them emerged as morphological key innovations (perhaps ‘hopeful monsters’) that gave rise to new evolutionary lines of organisms, based on (major) genetic changes. Scope This pictorial report places emphasis on released bauplans as typical for bladderworts (Utricularia,approx. 230 secies, Lentibulariaceae) and river-weeds (Podostemaceae, three subfamilies, approx. 54 genera, approx. 310 species). Bladderworts (Utricularia) are carnivorous, possessing sucking traps. They live as submerged aquatics (except for their flowers), as humid terrestrials or as epiphytes. Most Podostemaceae are restricted to rocks in tropi- http://aob.oxfordjournals.org/ cal river-rapids and waterfalls. They survive as submerged haptophytes in these extreme habitats during the rainy season, emerging with their flowers afterwards. The recent scientific progress in developmental biology and evolu- tionary history of both Lentibulariaceae and Podostemaceae is summarized. -
The South African Qualifications Authority
THE SOUTH AFRICAN QUALIFICATIONS AUTHORITY Articulation Between Technical and Vocational Education and Training (TVET) Colleges and Higher Education Institutions (HEIs): National Articulation Baseline Study Report October 2017 ARTICULATION BETWEEN TECHNICAL AND VOCATIONAL EDUCATION AND TRAINING (TVET) COLLEGES AND HIGHER EDUCATION INSTITUTIONS (HEIs) NATIONAL ARTICULATION BASELINE STUDY REPORT October 2017 DISCLAIMER The views expressed in this report are not necessarily those of the South African Qualifications Authority (SAQA) and only those parts of the text clearly flagged as decisions or summaries of decisions taken by the Authority should be seen as reflecting SAQA policy and/or views. COPYRIGHT All rights are reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the South African Qualifications Authority (SAQA). ACKNOWLEDGEMENTS The National Articulation Baseline Study reported here forms part of SAQA’s long-term partnership research with the Durban University of Technology (DUT) “Developing an understanding of the enablers of student transitioning between Technical and Vocation Education and Training (TVET) Colleges and HEIs and beyond”. Data were gathered, and initial analyses done, for the National Articulation Baseline Study, by Dr Heidi Bolton, Dr Eva Sujee, Ms Renay Pillay, and Ms Tshidi Leso (all of SAQA). The in-depth analyses were conducted by -
Floristic Composition of a Neotropical Inselberg from Espírito Santo State, Brazil: an Important Area for Conservation
13 1 2043 the journal of biodiversity data 11 February 2017 Check List LISTS OF SPECIES Check List 13(1): 2043, 11 February 2017 doi: https://doi.org/10.15560/13.1.2043 ISSN 1809-127X © 2017 Check List and Authors Floristic composition of a Neotropical inselberg from Espírito Santo state, Brazil: an important area for conservation Dayvid Rodrigues Couto1, 6, Talitha Mayumi Francisco2, Vitor da Cunha Manhães1, Henrique Machado Dias4 & Miriam Cristina Alvarez Pereira5 1 Universidade Federal do Rio de Janeiro, Museu Nacional, Programa de Pós-Graduação em Botânica, Quinta da Boa Vista, CEP 20940-040, Rio de Janeiro, RJ, Brazil 2 Universidade Estadual do Norte Fluminense Darcy Ribeiro, Laboratório de Ciências Ambientais, Programa de Pós-Graduação em Ecologia e Recursos Naturais, Av. Alberto Lamego, 2000, CEP 29013-600, Campos dos Goytacazes, RJ, Brazil 4 Universidade Federal do Espírito Santo (CCA/UFES), Centro de Ciências Agrárias, Departamento de Ciências Florestais e da Madeira, Av. Governador Lindemberg, 316, CEP 28550-000, Jerônimo Monteiro, ES, Brazil 5 Universidade Federal do Espírito Santo (CCA/UFES), Centro de Ciências Agrárias, Alto Guararema, s/no, CEP 29500-000, Alegre, ES, Brazil 6 Corresponding author. E-mail: [email protected] Abstract: Our study on granitic and gneissic rock outcrops environmental filters (e.g., total or partial absence of soil, on Pedra dos Pontões in Espírito Santo state contributes to low water retention, nutrient scarcity, difficulty in affixing the knowledge of the vascular flora of inselbergs in south- roots, exposure to wind and heat) that allow these areas eastern Brazil. We registered 211 species distributed among to support a highly specialized flora with sometimes high 51 families and 130 genera. -
Brief Information About the Species Status of Utricularia Cornigera Studnicˇka
Technical Refereed Contribution Brief information about the species status of Utricularia cornigera Studnicˇka Miloslav studnicˇka • Liberec Botanic Gardens • Purkynˇova 630/1 • CZ-460 01 Liberec • Czech Republic • [email protected] Keywords: Utricularia cornigera, hybrid, heterosis, apomixis Abstract: The carnivorous plant Utricularia cornigera Studnicˇka was described in 2009, but author- ities of the International Carnivorous Plant Society published an opinion that it is not a true species, but only a natural hybrid of U. reniformis and U. nelumbifolia. The role of heterosis is discussed, because U. cornigera is much larger than both theoretical parents. Seedlings, the very characteristic feature of bladderworts (Utricularia), are different in all the bladderworts described, that is, in the named species and in artificial hybrids of U. nelumbifolia and U. reniformis. No support for the hypothesis supposing a hybrid origin of U. cornigera was found. Introduction Recently a hypothesis appeared that Utricularia cornigera Studnicˇ ka could be a hybrid of U. nelum- bifolia Gardn. × U. reniformis St.Hil. (Schlauer 2011; Fleischmann 2012). Consequentially, the new species was rejected from the Carnivorous Plant Database (Schlauer 2011). Nevertheless it was accepted in the International Plant Name Index (IPNI 2005). This article presents the results of new experiments with artificial crossings of both theoretical parents proposed by the authors. The manner of germination and specifically the appearance of the seedlings are crucial phenomena in the life strategy of bladderworts. In the Utricularia species from the section Iperua there are two different ways of germination: either by floating seedlings (e.g. U. cornigera, U. nelumbifolia), or by terrestrial seedlings (e.g. -
South African TVET, CET and Private Colleges
Department of Higher Education and Training 123 Francis Baard Street Pretoria South Africa Private Bag X174 Pretoria 0001 Tel.: 0800 87 22 22 Published by the Department of Higher Education and Training. www.dhet.gov.za © Department of Higher Education and Training, 2019. This publication may be used in part or as a whole, provided that the Department of Higher Education and Training is acknowledged as the source of information. The Department of Higher Education and Training does all it can to accurately consolidate and integrate national education information, but cannot be held liable for incorrect data and for errors in conclusions, opinions and interpretations emanating from the information. Furthermore, the Department cannot be held liable for any costs, losses or damage that may arise as a result of any misuse, misunderstanding or misinterpretation of the statistical content of the publication. ISBN: 978-1-77018-854-9 This report is available on the Department of Higher Education and Training’s website: www.dhet.gov.za. Enquiries: Tel: +27 (0)12 312 6191/5961 Email: [email protected] ii FOREWORD In general, the Department of Higher Education and Training (the Department) publishes college examination data in its annual publication on Statistics on Post- School Education and Training, which can be found on the Department’s website at www.dhet.gov.za. However, owing to the unavailability of college examination data when the 2017 Statistics on Post-School Education and Training in South Africa was released in March 2019, I present to you a special issue of the 2017 Examination Data: South African Technical and Vocational Education and Training (TVET), Community Education and Training (CET) and Private Colleges. -
JOURNAL of JOURNAL of BOTANY Surprising Phenomena in the Life
Thaiszia - J. Bot., Košice, 21: 37-43, 2011 THAISZIA http://www.bz.upjs.sk/thaiszia JOURNAL OF BOTANY Surprising phenomena in the life strategy of Utricularia cornigera in Brazil MILOSLAV STUDNI ČKA Botanic Gardens Liberec, Purkynova 630/1, CZ-460 01 Liberec; [email protected] Studni čka M. (2011): Surprising phenomena in the life strategy of Utricularia cornigera in Brazil. – Thaiszia – J. Bot. 21: 37-43. – ISSN 1210-0420. Abstract: The symbiotic relationships of the carnivorous plant Utricularia cornigera Studni čka are documented and discussed, paying attention to the morphology of its seedlings. The life strategy of this bladderwort is rather different in subalpine plant communities and in alpine communities according to research in Serra dos Orgãos in SE Brazil. The life strategy of Utricularia reniformis is compared according to observations made in similar habitats in Serra da Mantiqueira. Keywords: symbiosis, life strategy, Utricularia , Eryngium , Vriesea . Introduction Only three of the numerous non-aquatic (technically emerged) bladderworts have star-shaped seedlings which function as floats. These South American species are known as plants growing obligatorily ( Utricularia nelumbifolia Gardn.) or occasionally ( U. cornigera Studni čka and U. humboldtii Rob. Schomb.) within phytotelmata in the leaf axils of certain petrophilous bromeliads (TAYLOR 1989). In a previous paper I clarified that U. cornigera had been mistaken for U. reniformis A.St.-Hil. (STUDNI ČKA 2009). These species are different, amongst other things in their absolutely distinct seedlings: The true U. reniformis never has star-shaped floating seedlings. From this we can assume that only U. cornigera , U. humboldtii and U. nelumbifolia are capable of germinating within phytotelmata, while U. -
SANRAL-Integrated-Report-Volume-1
2020 INTEGRATED REPORT VOLUME ONE LEADER IN INFRASTRUCTURE DEVELOPMENT The South African National Roads Agency SOC Limited Integrated Report 2020 The 2020 Integrated Report of the South African National Roads Agency SOC Limited (SANRAL) covers the period 1 April 2019 to 31 March 2020 and describes how the Agency gave effect to its statutory mandate during this period. The report is available in print and electronic formats and is presented in two volumes: • Volume 1: Integrated Report is a narrative and statistical description of major developments during the year and of value generated in various ways. • Volume 2: Annual Financial Statements and the Corporate Governance Report. In selecting qualitative and quantitative information for the report, the Agency has strived to be concise but reasonably comprehensive and has followed the principle of materiality—content that shows the Agency’s value-creation in the short, medium and long term. The South African National Roads Agency SOC Limited | Reg no: 1998/009584/30 The South African National Roads Agency SOC Limited | Reg no: 1998/009584/30 THE SOUTH AFRICAN NATIONAL ROAD AGENCY SOC LTD INTEGRATED REPORT Volume One CHAIRPERSON’S REPORT 1 CHIEF EXECUTIVE OFFICER’S REPORT 5 SECTION 1: COMPANY OVERVIEW 12 Vision, Mission and Principal Tasks and Objectives 13 Business and Strategy 14 Implementation of Horizon 2030 15 Board of Directors 20 Executive Management 21 Regional Management 22 SECTION 2: CAPITALS AND PERFORMANCE 24 1. Manufactured Capital 25 1.1 Road development, improvement and rehabilitation -
Tissue Culture Applied to Carnivorous Species
Scientia Agraria Paranaensis – Sci. Agrar. Parana. ISSN: 1983-1471 – Online DOI: https://doi.org/10.18188/sap.v19i4.22193 TISSUE CULTURE APPLIED TO CARNIVOROUS SPECIES Mariana Maestracci Macedo Caldeira1, José Victor Maurício de Jesus1, Hemelyn Soares Magalhães1, Maria Antônia Santos de Carvalho1, Monielly Soares Andrade1, Claudineia Ferreira Nunes1* SAP 22193 Received: 17/04/2019 Accepted: 02/05/2020 Sci. Agrar. Parana., Marechal Cândido Rondon, v. 19, n. 4, oct./dec., p. 312-320, 2020 ABSTRACT - The purpose of the review is to comment on available data on the application of plant tissue culture to carnivorous plants. Thus, the review encompassed publications from 1979 to 2017 along in vitro germination studies and micropropagation techniques, such as somatic embryogenesis and organogenesis, which emphasized the responses of plant materials to the stimuli offered during in vitro culture. Tissue culture in carnivorous plants is presented as a tool to promote the increase of the population of these plants either for scientific and commercial purposes or for the conservation and reintroduction in their natural habitat, in order to ensure a sustainable exploitation of this nutritional pattern of plants. In general terms, the studies carried out were limited to the following aspects: cultivation technique, explant source, exogenously applied substances and culture medium. The review also revealed the absence of defined protocols for in vitro multiplication of large-scale carnivorous plants. Keywords: biotechnology, in vitro cultivation, insectivorous plants, micropropagation. CULTURA DE TECIDOS APLICADA A ESPÉCIES CARNÍVORAS RESUMO - O objetivo da revisão é comentar dados disponíveis sobre a aplicação da cultura de tecidos vegetais para plantas carnívoras. Assim, a revisão englobou publicações de 1979 a 2017 com estudos de germinação in vitro e técnicas de micropropagação, como embriogênese somática e organogênese, os quais enfatizam as respostas dos materiais vegetais aos estímulos oferecidos durante o cultivo in vitro. -
VCPS Mar 06 Journal No 79
ISSN 1033-6966 VICTORIAN CARNIVOROUS PLANT SOC IETY Inc. March 2006 No. 79 P. immaculata x emarginata Nepenthes x allardii Utricularia nelumbifolia Dionaea muscipula “Goliath” Drosera parvula ssp sargentii Sarracenia flava var. rugelii Drosera praefolia D. whittakerii ssp whittakerii D. whittakerii ssp whittakerii VICTORIAN CARNIVOROUS VICTORIAN CARNIVOROUS PLANT SOC IETY Inc. PLANT SOC IETY Inc. Annual Subscriptions Issue No. 79 March 2006 Australian membership $20.00 Office Bearers: July 2005 – June 2006 Overseas membership $20.00 Payment from overseas must be in Australian dollars. President Stephen Fretwell All cheques or money orders should be made payable to the Victorian Carnivorous Plant Society Inc (VCPS). Vice President Sean Spence Payment by credit card is NOT available at the time of this journal issue. General Secretary Paul Edwards Correspondence Minutes Secretary Sean Spence Please forward all correspondence regarding subscription, change of address, Other Publications Gordon Ohlenrott articles for the journal and back issues to: The Secretary VCPS Journal Editor Stephen Fretwell P.O. Box 201 SOUTH YARRA 3141. Assistant Journal Editor George Caspar AUSTRALIA Internet Co-ordinator Paul Edwards Journal articles, in MS-Word, ready for publication, may be Emailed to the Editor or Secretary. Treasurer Ken Neal Librarian Andrew Gibbons Meetings Seedbank Administrator George Caspar Most VCPS meetings are held in the hall at the rear of the Pilgrim Uniting Church on the corner of Bayview Road and Montague Street, Yarraville – Melway map reference Hardware Co-ordinator Andre Cleghorn 41K7. These meetings are on the fourth Wednesday of the month at 8 PM. However, some meetings may be at the home of members during a weekend. -
2018 INTEGRATED REPORT Volume 1
2018 INTEGRATED REPORT VOLUME 1 Goals can only be achieved if efforts and courage are driven by purpose and direction Integrated Report 2017/18 The South African National Roads Agency SOC Limited Reg no: 1998/009584/30 THE SOUTH AFRICAN NATIONAL ROADS AGENCY SOC LIMITED The South African National Roads Agency SOC Limited Integrated Report 2017/18 About the Integrated Report The 2018 Integrated Report of the South African National Roads Agency (SANRAL) covers the period 1 April 2017 to 31 March 2018 and describes how the agency gave effect to its statutory mandate during this period. The report is available in printed and electronic formats and is presented in two volumes: • Volume 1: Integrated Report is a narrative on major development during the year combined with key statistics that indicate value generated in various ways. • Volume 2: Annual Financial Statements contains the sections on corporate governance and delivery against key performance indicators, in addition to the financial statements. 2018 is the second year in which SANRAL has adopted the practice of integrated reporting, having previously been guided solely by the approach adopted in terms of the Public Finance Management Act (PFMA). The agency has attempted to demonstrate the varied dimensions of its work and indicate how they are strategically coherent. It has continued to comply with the reporting requirements of the PFMA while incorporating major principles of integrated reporting. This new approach is supported by the adoption of an integrated planning framework in SANRAL’s new strategy, Horizon 2030. In selecting qualitative and quantitative information for the report, the agency has been guided by Horizon 2030 and the principles of disclosure and materiality. -
Government Gazette Staatskoerant REPUBLIC of SOUTH AFRICA REPUBLIEK VAN SUID AFRIKA
Government Gazette Staatskoerant REPUBLIC OF SOUTH AFRICA REPUBLIEK VAN SUID AFRIKA Regulation Gazette No. 10177 Regulasiekoerant March Vol. 657 13 2020 No. 43086 Maart PART 1 OF 2 ISSN 1682-5843 N.B. The Government Printing Works will 43086 not be held responsible for the quality of “Hard Copies” or “Electronic Files” submitted for publication purposes 9 771682 584003 AIDS HELPLINE: 0800-0123-22 Prevention is the cure 2 No. 43086 GOVERNMENT GAZETTE, 13 MARCH 2020 IMPORTANT NOTICE OF OFFICE RELOCATION Private Bag X85, PRETORIA, 0001 149 Bosman Street, PRETORIA Tel: 012 748 6197, Website: www.gpwonline.co.za URGENT NOTICE TO OUR VALUED CUSTOMERS: PUBLICATIONS OFFICE’S RELOCATION HAS BEEN TEMPORARILY SUSPENDED. Please be advised that the GPW Publications office will no longer move to 88 Visagie Street as indicated in the previous notices. The move has been suspended due to the fact that the new building in 88 Visagie Street is not ready for occupation yet. We will later on issue another notice informing you of the new date of relocation. We are doing everything possible to ensure that our service to you is not disrupted. As things stand, we will continue providing you with our normal service from the current location at 196 Paul Kruger Street, Masada building. Customers who seek further information and or have any questions or concerns are free to contact us through telephone 012 748 6066 or email Ms Maureen Toka at [email protected] or cell phone at 082 859 4910. Please note that you will still be able to download gazettes free of charge from our website www.gpwonline.co.za. -
Second Brief Piece of Information About the Species Status of Utricularia Cornigera Studnicˇka
Technical Refereed Contribution Second brief piece of information about the species status of Utricularia cornigera Studnicˇka Miloslav Studnicˇka • Liberec Botanic Gardens • Purkynˇova 630/1 • CZ-460 01 • Liberec • Czech Republic • [email protected] Keywords: Utricularia cornigera, bladderwort, hybrids, bladders, traps. Abstract: Hybrids of Utricularia nelumbifolia × U. reniformis (and vice versa) were raised, and the bladders of adult individuals taken out of the soil were observed. With their long antennae they re- semble their parents, yet they differ noticeably from the identically situated bladders of U. cornigera that has characteristic short antennae. Therefore, the morphology of the bladders does not support the hypothesis of a hybrid origin of U. cornigera. Introduction The seedlings from the artificial cross-breeding of Utricularia reniformis × U. nelumbifolia (and vice versa) documented in CPN 2 years ago (Studnicˇka 2013) have become adult plants, and thus it was possible to document the traps of the hybrids. In this study, a comparison is made with both the parental species and with U. cornigera, for it is a species related to both cross-bred species. The species U. cornigera and U. reniformis are similar to each other with their kidney-shaped leaves. The species U. cornigera and U. nelumbifolia have symbiotic relationships to host rosette-forming plants (Studnicˇka 2011). All the three species are endemic to south-eastern Brazil. Material and Methods The hybrids described in the previous brief information (Studnicˇka 2013) were investigated. These plants have been raised and continue to be kept in the Liberec Botanic Garden. Stolons with bladders were removed from the soil and placed into a small bowl with water.