Description of Types of Principal American Varieties of Onions

Description of Types of Principal American Varieties of Onions

Author: R. Magruder

Publisher:

Published: 1941

Total Pages: 87

ISBN-13:

DOWNLOAD EBOOK

Important considerations in comparing onion varieties or strains with type descriptions or standards; Influence of environment on varietal characters; Developmental history of shape in the onion; Distinguishing varietal characteristics.


Descriptions of Types of Principal American Varieties of Onions (Classic Reprint)

Descriptions of Types of Principal American Varieties of Onions (Classic Reprint)

Author: Roy Magruder

Publisher: Forgotten Books

Published: 2017-10-27

Total Pages: 98

ISBN-13: 9781528227605

DOWNLOAD EBOOK

Excerpt from Descriptions of Types of Principal American Varieties of Onions As the title suggests, the Object of this publication is to describe, as accurately and definitely as possible, the general form or structure of the most important varieties of onions (allium cepa L.) grown in the United States in 1938. Insofar as possible, informa tion is also given on the relative importance Of varieties for specific purposes and geographical regions, on their resistance to diseases and insects, and their reaction to different environments. 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.


Plant Breeding Reviews

Plant Breeding Reviews

Author: J. Janick

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 411

ISBN-13: 1468488961

DOWNLOAD EBOOK

Plant breeding, the domestication and systematic improvement of crop species, is the basis of past and present agriculture. Our so called primitive progenitors selected practically all our present-day crop plants, and the improvement wrought through millenia of selection has so changed some of them that in many cases their links to the past have been obliterated. There is no doubt that this ranks among the greatest of human achievements. Although plant breeding has been a continuous empirical activity for as long as humans have forsaken the vagaries and thrill of hunting for the security and toil of agriculture, genetic crop improvement is now very much of a twentieth-century discipline. Its scientific underpinnings date to the beginning of this century with the discovery of Gregor Mendel's classic 1865 paper on the inheritance of seven characters in the garden pea. If any science can be traced to single event, the best example is surely found in the conception of modern genetics that appears in this single creative work. The relationship of plant breeding progress to advances in genetics has become closely entwined. Mendel himself was concerned with crop improvement and worked on schemes for apple and pear breeding. Plant breeding also has claims on other scientific and agricultural disci plines-botany, plant pathology, biochemistry, statistics, taxonomy, entomology, and cytology, to name a few-and has also impinged on our social, ethical, economic, and political consciousness.


Onions and Other Vegetable Alliums

Onions and Other Vegetable Alliums

Author: James L. Brewster

Publisher: CABI

Published: 2008-01-01

Total Pages: 456

ISBN-13: 1845936221

DOWNLOAD EBOOK

Relates the production and utilization of onions and other vegetable allium crops to the many aspects of plant science underpinning their production and storage technologies. This book covers species and crop types, plant structure, genetics and breeding, physiology of growth and development as well as pests and diseases.