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Author: Arlow Burdette Stout
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 110
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Author: Arlow Burdette Stout
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 110
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Author: A. B. Stout
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Arlow Burdette Stout
Publisher: Hardpress Publishing
ISBN: 9781314919653
Category :
Languages : en
Pages : 98
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Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
Author: A. B. Stout
Publisher:
ISBN: 9781331955078
Category : Science
Languages : en
Pages : 90
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Excerpt from The Establishment of Varieties in Coleus by the Selection of Somatic Variations Judgment as to the genetic constitution of a plant is based on the expression of characters in a plant itself, in members of a selfed progeny and in a hybrid progeny. It is largely through the study of the last named that there has developed the conception that characters are represented in cells by unit factors. In considering the evidence as to whether these assumed factors are in any sense units, it is highly essential that the individual be studied as to the variability of characters and the range of expressions exhibited in homologous parts. For this purpose so-called bud variations are especially significant, since they represent, perhaps, the extreme of spontaneous somatic variability and suggest that quite as marked variations as exist in hybrid progeny may develop in the parts of a single individual. In an excellent summary of all cases of bud variation known to him, Darwin (1868) shows that the phenomenon is widely distributed in the plant kingdom and that it may affect various parts of a plant. He drew the highly interesting conclusions that they include: (1) reversions to characters not acquired by crossing, (2) reversions in hybrids to parental characters, and (3) cases of spontaneous variability. The latter he considered as of the same sort as appear in seed progeny. According to Darwin's views, "long-continued and high cultivation" are conditions that induce bud variations, but he recognized that certain cases, especially those when only single buds or parts of buds are changed, do not seem to be due to external conditions. Darwin considered in general that bud variations are evidences of the almost unlimited variability that plants manifest, due to the nature of living structures and the exciting causes of environment. Darwin did not believe in fixed hereditary units. He held that characters may respond directly to the effects of environment, and also exhibit spontaneous variability both in seed and in vegetative propagation. Furthermore, sexual hybridization was considered to be of influence in modifying and changing inherited characteristics. De Vries (1901, vol. i, p. 39) considers that bud variations are spontaneous changes most common in varieties with incompletely fixed characters. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Arlow Burdette Stout
Publisher: Palala Press
ISBN: 9781347035184
Category :
Languages : en
Pages : 102
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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 was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.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.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Jules Janick
Publisher: John Wiley & Sons
ISBN: 111806108X
Category : Science
Languages : en
Pages : 454
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Book Description
Plant Breeding Reviews is an ongoing series presenting state-of-the art review articles on research in plant genetics, especially the breeding of commercially important crops. Articles perform the valuable function of collecting, comparing, and contrasting the primary journal literature in order to form an overview of the topic. This detailed analysis bridges the gap between the specialized researcher and the broader community of plant scientists.
Author: New York Botanical Garden
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 320
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Author: New York Botanical Garden
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 366
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Vols. for 1933-41, 1945 includes the Annual report of the director, 1933-40, 1944.
Author: Ernest Brown Babcock
Publisher:
ISBN:
Category : Genetics
Languages : en
Pages : 712
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Book Description
Fundamentals; Scope, methods, and applications of genetics; Phisical basis; Development; Reproduction; Heredity; Mendelian method; Segregation; Mendelian conceptions; Sex linkage or heterosomal inheritance; Heterozygous expressions; Lethal factors; Multiple allelomorphism; Sex-limited characters; Independent assortment; Factor interactions in development; Linkage; The organization of linkage groups; Variation; The statistics of variation; Developmental variation; Quantitative characters; Pure lines and clones; Selection; Factor mutation; Parallel variation; Chromosomal variation; Sectional variation; The oenothera investigations; Interspecific hybridization; Plant breeding; Varieties; Chimeras; Clonal selection; Pure-line selection; Selection in cross-fertilized plants; The utilization of hybrid vigor; Breeding new varieties by hybridization; Breeding disease-resistant plants; Plant-breeding methods; Animal breeding; Mendelian applications; Acquired characters; Animal hybrids; Selection; Sex; Defect and disease; Inbreeding; Fertility and vigor; Breeding methods.
Author: Fred Alfred Krantz
Publisher:
ISBN:
Category : Potatoes
Languages : en
Pages : 44
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