Download or read book Taxonomy and Genetics of Oenothera written by R. Ruggles Gates and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the beginning of this century the mutation theory of evolution, based by HUGO DE VRIES on many years of culture experiments mainly with Oenothera Lamarckiana, took the world by storm when published in 1901. As early as 1889 DE VRIES had shown that various plant "monstrosities" are inherited. His breeding experi ments with other plants involved the rediscovery of MENDEL'S laws and the resuscitation of MENDEL'S breeding methods, which had been in abeyance in the long period from 1865 to 1900. MENDEL began his crossing experiments in 1854, DE VRIES began his Oeno thera cultures in 1886. The genus Oenothera was thus the first after Pisum to be the subject of extensive genetic experiments. Thus was introduced the method now so widely pursued. It may be remembered also that DE VRIES drew the distinction between fluctuations and mutations, but he regarded all fluctuations or continuous variations as non-heritable. Both can be equated with the continuous and discontinuous variations of BATESON. DE VRIES' conception of mutations corresponds with the "single variations" of DARWIN, except that he regarded each mutation as producing a new elementary species, now generally called microspe cies. He said in the introduction to his Mutationstheorie, that the characters of organisms are built up from units which are as sharply distinguished from each other as the molecules of chemistry. These units can be united into groups, and in related species of plants and animals the same units and groups are repeated.
Download or read book Taxonomy and Genetics of Oenothera Forty Years Study in the Cytology and Evolution of the Onagraceae 7 written by R R (Reginald Ruggles) 1882 Gates and published by Hassell Street Press. This book was released on 2021-09-10 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Vistas in Botany written by W. B. Turrill and published by Elsevier. This book was released on 2013-10-22 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vistas in Botany, Volume 4: Recent Researchers in Plant Taxonomy covers some of the more important general aspects of plant taxonomy. This volume is composed of seven chapters that link the practice and theory of taxonomy to plant geography, ecology, pollen anatomy, embryology, genetics, and cytology. The opening chapter outlines the views on plant taxonomy classification, the relevance of these views to biological classification, and some of the problems of classification in the non-taxonomic fields of ecology, soil science, and librarianship. The succeeding chapter presents the classification of the spores in higher plants, the cormophytes. This topic is followed by discussions on the embryological characters of taxonomic significance and the interrelations of plant taxonomy, phytogeography, and plant ecology. The final chapters consider the taxonomic preparation of flora and plant fossils. This book will prove useful to taxonomists, botanists, ecologists, and scientists and researchers in the allied fields of botany.
Download or read book Current Catalog written by National Library of Medicine (U.S.) and published by . This book was released on 1967 with total page 1360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes subject section, name section, and 1968-1970, technical reports.
Download or read book National Library of Medicine Current Catalog written by National Library of Medicine (U.S.) and published by . This book was released on 1967 with total page 1350 pages. Available in PDF, EPUB and Kindle. Book excerpt: First multi-year cumulation covers six years: 1965-70.
Download or read book Bibliographia Biotheoretica written by Cornelis Jakob Van Der Klaauw and published by BRILL. This book was released on 2023-07-24 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Series of Monographs on Pure and Applied Biology written by and published by . This book was released on 1964 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Vistas in Botany written by William Bertram Turrill and published by . This book was released on 1964 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tuberales written by Helen Margaret Gilkey and published by . This book was released on 1954 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book North American Flora written by and published by . This book was released on 1963 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Selected Guide to the Literature of the Flowering Plants of Mexico written by Ida Kaplan Langman and published by University of Pennsylvania Press. This book was released on 2018-01-09 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt: This bibliography is a guide to the literature on Mexican flowering plants, beginning with the days of the discovery and conquest of Mexico by the Spaniards in the early sixteenth century.
Download or read book University of California Union Catalog of Monographs Cataloged by the Nine Campuses from 1963 Through 1967 Subjects written by University of California (System). Institute of Library Research and published by . This book was released on 1972 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book University of California Union Catalog of Monographs Cataloged by the Nine Campuses from 1963 Through 1967 Authors titles written by University of California (System). Institute of Library Research and published by . This book was released on 1972 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalog of the Library of the Academy of Natural Sciences of Philadelphia written by Academy of Natural Sciences of Philadelphia. Library and published by . This book was released on 1972 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliographia biotheoretica written by and published by . This book was released on 1962 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Flora Hellenica Bibliography written by Arne Strid and published by W. Szafer Institute of Botany Polish Academy of Sciences. This book was released on 1996 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
