Distinguishing the Species of Brassica by Their Seed (Classic Reprint) PDF Download
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Author: Albina Frances Musil
Publisher: Forgotten Books
ISBN: 9780266899822
Category : Science
Languages : en
Pages : 42
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Book Description
Excerpt from Distinguishing the Species of Brassica by Their Seed Present-day investigators recognize the importance of the chromo some number as an aid in the determination of species. As pointed out by Sinskaia however, crossability with other species and the character of the hybrids must also be taken into consideration in establishing the relationship of different forms. For example, B. Kaber (b arvensis) and B oleracea have the same chromosome number, but no record has been found of a successful cross between the two species. Sutton (54) and others have shown that when a successful cross between distinct species is accomplished it may produce sterile hybrids or a segregation of nondescript character in F2. Unfortu nately, seed and plant specimens are rarely cited in the literature to substantiate the authenticity of materials used in cytological research. This is particularly important in the genus Brassica, since the seeds are not commonly recognized and the Variable nature of the plants requires critical identification. In the absence of such records it can only be assumed that the reported results are based on authentic material. 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: Albina Frances Musil
Publisher: Forgotten Books
ISBN: 9780266899822
Category : Science
Languages : en
Pages : 42
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Book Description
Excerpt from Distinguishing the Species of Brassica by Their Seed Present-day investigators recognize the importance of the chromo some number as an aid in the determination of species. As pointed out by Sinskaia however, crossability with other species and the character of the hybrids must also be taken into consideration in establishing the relationship of different forms. For example, B. Kaber (b arvensis) and B oleracea have the same chromosome number, but no record has been found of a successful cross between the two species. Sutton (54) and others have shown that when a successful cross between distinct species is accomplished it may produce sterile hybrids or a segregation of nondescript character in F2. Unfortu nately, seed and plant specimens are rarely cited in the literature to substantiate the authenticity of materials used in cytological research. This is particularly important in the genus Brassica, since the seeds are not commonly recognized and the Variable nature of the plants requires critical identification. In the absence of such records it can only be assumed that the reported results are based on authentic material. 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: Albina Frances Musil
Publisher:
ISBN:
Category : Cruciferae
Languages : en
Pages : 36
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Author: Albina F. Musil
Publisher:
ISBN:
Category : Cruciferae
Languages : en
Pages : 35
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Author: A. J. Pieters
Publisher: Forgotten Books
ISBN: 9780265857809
Category :
Languages : en
Pages : 24
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Excerpt from The Seed Coats of Certain Species of the Genus Brassica One of the troubles with which the seedsman has to contend is the complaint that he has sold turnip for cabbage or cauliflower seed, or the seed of a wild and weedy mustard for that of turnip or ruta-baga. The seedsman may have furnished the seeds in good faith, but he may have been deceived by the grower or by the wholesaler. It is, how ever, seldom possible to determine how far the trouble is due to care lessness on the part of the planter and inhow far the seedsman is at fault. The seed bought has all been planted and the seedsman may insist that from other lots taken out of the same bag satisfactory results were obtained. Even when the purchaser has saved some seed, it is impossible without another season's test to determine what the seed really is. In external appearance the seeds of the different species and varieties of this genus are so similar that it is at all times a difficult matter to certainly identify a given lot, and it may be wholly impossible to do so. The resemblance between the seeds of cheap and of high-priced Bras sicas has always tempted certain seedsmen to mix more or less of the one with the other. This was at one time carried so far in England that factories were established where seeds of cheap Brassicas were heated to destroy their germination so that the fraud might escape detection. This practice was stopped by the adulteration of seeds bill which passed Parliament in 1869. While it is not difficult for an expert when examining a large sample of seed to pronounce it cab bage, rape, or mustard, it is impossible for him to pronounce upon mixtures, and even determinations of pure samples may be open to doubt. Fortunately we possess in the structure of the seed coat a means of identification by which most of the species studied may be readily distinguished. This method has been employed by various investigators, mainly for the purpose of determining the seeds used in the preparation of oil cakes, and the results have found their way into most pharmacopoeias. 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: United States. Bureau of Plant Industry. Division of Seed Investigations
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
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Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 778
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Author: Alphonse de Candolle
Publisher:
ISBN:
Category : Botany, Economic
Languages : en
Pages : 536
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Author: Charles Dowding
Publisher: Penguin
ISBN: 0744077753
Category : Gardening
Languages : en
Pages : 631
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Book Description
Work in partnership with nature to nurture your soil for healthy plants and bumper crops - without back-breaking effort! Have you ever wondered how to transform a weedy plot into a thriving vegetable garden? Well now you can! By following the simple steps set out in No Dig, in just a few short hours you can revolutionize your vegetable patch with plants already in the ground from day one! Charles Dowding is on a mission to teach that there is no need to dig over the soil, but by minimizing intervention you are actively boosting soil productivity. In fact, The less you dig, the more you preserve soil structure and nurture the fungal mycelium vital to the health of all plants. This is the essence of the No Dig system that Charles Dowding has perfected over a lifetime growing vegetables. So put your gardening gloves on and get ready to discover: - Guides and calendars of when to sow, grow, and harvest. - Inspiring information and first-hand guidance from the author - “Delve deeper” features look in-depth at the No Dig system and the facts and research that back it up. - The essential role of compost and how to make your own at home. - The importance of soil management, soil ecology, and soil health. Now one of the hottest topics in environmental science, this "wood-wide web" has informed Charles's practice for decades, and he's proven it isn't just trees that benefit - every gardener can harness the power of the wood-wide web. Featuring newly- commissioned step-by-step photography of all stages of growing vegetables and herbs, and all elements of No Dig growing, shot at Charles’s beautiful market garden in Somerset, you too will be able to grow more veg with less time and effort, and in harmony with nature - so join the No Dig revolution today! A must-have volume for followers of Charles Dowding who fervently believe in his approach to low input, high yield gardening, as well as gardeners who want to garden more lightly on the earth, with environmentally friendly techniques like organic and No Dig.
Author: C. Gomez-Campo
Publisher: Elsevier
ISBN: 0080528023
Category : Technology & Engineering
Languages : en
Pages : 501
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Book Description
Brassica crop species and their allies (Raphanus, Sinapis, Eruca, etc.) are important sources of edible roots, stems, leaves, buds and inflorescences, as well as of edible or industrial oils, condiments and forage. Many well known names of plants or plant products, such as kale, cabbage, brocolli, cauliflower, Brussels sprouts, kohl-rabi, Chinese cabbage, turnip, rape, rutabaga, swede, colza or rapeseed, canola, mustard, rocket, etc. are directly associated to this botanical group.The scientific interest for this botanical group has run parallel to its economical importance, and research achievements in our days would have certainly appeared unimaginable only two decades ago. As the end of the millenium approaches, entirely new fields (transformation, somatic fusion, etc.) have been added to the classical ones. Thus, nobody can doubt the opportuneness of this book, which combines and presents both the basic and applied biological aspects of the Brassica species.
Author: Hugo de Vries
Publisher:
ISBN:
Category : Evolution
Languages : en
Pages : 890
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