Standard Tests to Characterize Pest Resistance in Alfalfa Varieties (Classic Reprint) PDF Download
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Author: D. K. Barnes
Publisher: Forgotten Books
ISBN: 9780260785282
Category :
Languages : en
Pages : 34
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Book Description
Excerpt from Standard Tests to Characterize Pest Resistance in Alfalfa Varieties This publication presents information assembled by the Alfalfa Improve ment Conference Committee on Standard tests for characterizing disease and insect resistance of alfalfa varieties. The report was approved by the 23d Alfalfa Improvement Conference held J uly 10-12, 1972, at Ottawa, Canada. 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: D. K. Barnes
Publisher: Forgotten Books
ISBN: 9780260785282
Category :
Languages : en
Pages : 34
Get Book Here
Book Description
Excerpt from Standard Tests to Characterize Pest Resistance in Alfalfa Varieties This publication presents information assembled by the Alfalfa Improve ment Conference Committee on Standard tests for characterizing disease and insect resistance of alfalfa varieties. The report was approved by the 23d Alfalfa Improvement Conference held J uly 10-12, 1972, at Ottawa, Canada. 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 Department Of Agriculture
Publisher: Forgotten Books
ISBN: 9780260763501
Category :
Languages : en
Pages : 48
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Book Description
Excerpt from Standard Tests to Characterize Pest Resistance in Alfalfa Cultivars Biotic agents that incite diseases in alfalfa are bacteria, fungi, viruses, and mycoplasmas. Graham and others (29) reported that at least 70 different pathogens occur in alfalfa and that about 30 limit the growth and production of the crop. A survey of the United States by the Alfalfa improve ment Conference Committee identified 22 diseases that were problems in more than one State. Of these diseases, 19 were identified as problems in enough States so that national distribution and severity maps could be developed. Some research information is available on nearly every important alfalfa disease in the United States but often only one scientist may have worked with a particular disease. Even though information is available and variation in host-plant resistance has been reported for most impor tant diseases, reliable evaluation procedures are available for only bacterial wilt, anthracnose, common leaf spot, downy mildew, fusarium wilt, lepto leaf spot, phytophthora root rot, rust, and verticillium wilt.should both be used to describe cultivar reaction to dis eases. Cultivar evaluations should be based on individual plant scores rather than on solid-seeded plots. A 1 to 5 rat ing when feasible (1 no disease, 5 severely diseased) is favored. Ratings for each pathogen should be based on specific lesion types or degree of infection (some diseases may require fewer or more than five classes). Rating values should be consistent from test to test. Generally, at least 100 plants should be used for evaluating a cultivar, and resistant and susceptible check cultivars should be included in every test. The susceptible check cultivar can be used to estimate percentage of escapes in a test. The cultivar being evaluated should be compared to the resistant check. Standard seed lots of the check cultivars (when available) should be used. Although no agreement was reached on the number of tests required for evaluation, individual scientists should base their decision on the number of escapes and relative precision of their data. 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:
Publisher:
ISBN:
Category : Alfalfa
Languages : en
Pages : 44
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Author:
Publisher:
ISBN:
Category : Alfalfa
Languages : en
Pages : 28
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Author: United States. Agricultural Research Service
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
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Author:
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ISBN:
Category :
Languages : en
Pages : 0
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Author: Estados Unidos Agricultural Research Service
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author:
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Category : Alfalfa
Languages : en
Pages :
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Author: D. K. Barnes
Publisher: Forgotten Books
ISBN: 9780266627197
Category : Business & Economics
Languages : en
Pages : 56
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Book Description
Excerpt from The Development and Performance of Team Alfalfa: A Multiple Pest Resistant Alfalfa With Moderate Resistance to the Alfalfa Weevil Team is a vigorous growing variety with moderate resistance to the alfalfa weevil, anthracnose, Stemphylium.leaf spot, common leaf spot, and high resistance to pea aphids. It was developed for the maryland-virginia North Carolina area. The first certified seed of Team alfalfa will be available for spring planting in 1970. This publication makes pertinent information on performance of the new variety available to extension and research personnel, and to prospective growers. Team.a1falfa was released jointly by the u.s° Department of Agriculture and the cooperating Agricultural Experiment Stations of Maryland, North Carolina, and Virginia in February 1969. Team represents progress in develop ment of host plant resistance for control of the alfalfa weevil, the most serious insect pest to attack alfalfa in Eastern United States. Breeding alfalfa resistant to the alfalfa weevil has been one of the most difficult objectives undertaken in alfalfa breeding. 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: Long-Xi Yu
Publisher: Springer Nature
ISBN: 3030744663
Category : Science
Languages : en
Pages : 296
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Book Description
This book is the first comprehensive compilation of deliberations on whole genome sequencing of the diploid and tetraploid alfalfa genomes including sequence assembly, gene annotation, and comparative genomics with the model legume genome, functional genomics, and genomics of important agronomic characters. Other chapters describe the genetic diversity and germplasm collections of alfalfa, as well as development of genetic markers and genome-wide association and genomic selection for economical important traits, genome editing, genomics, and breeding targets to address current and future needs. Altogether, the book contains about 300 pages over 16 chapters authored by globally reputed experts on the relevant field in this crop. This book is useful to the students, teachers, and scientists in the academia and relevant private companies interested in genetics, breeding, pathology, physiology, molecular genetics and breeding, biotechnology, and structural and functional genomics. The work is also useful to seed and forage industries.
