Races of Maize in Mexico PDF Download
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Author: Edwin John Wellhausen
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 240
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Book Description
History of maize classification. How races used in classification. Geographical distribution. Existing races of maize in Mexico.
Author: Edwin John Wellhausen
Publisher:
ISBN:
Category : Corn
Languages : en
Pages : 240
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Book Description
History of maize classification. How races used in classification. Geographical distribution. Existing races of maize in Mexico.
Author: R. Douglas Hurt
Publisher: John Wiley & Sons
ISBN: 1119632226
Category : History
Languages : en
Pages : 612
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Book Description
Provides a solid foundation for understanding American agricultural history and offers new directions for research A Companion to American Agricultural History addresses the key aspects of America’s complex agricultural past from 8,000 BCE to the first decades of the twenty-first century. Bringing together more than thirty original essays by both established and emerging scholars, this innovative volume presents a succinct and accessible overview of American agricultural history while delivering a state-of-the-art assessment of modern scholarship on a diversity of subjects, themes, and issues. The essays provide readers with starting points for their exploration of American agricultural history—whether in general or in regards to a specific topic—and highlights the many ways the agricultural history of America is of integral importance to the wider American experience. Individual essays trace the origin and development of agricultural politics and policies, examine changes in science, technology, and government regulations, offer analytical suggestions for new research areas, discuss matters of ethnicity and gender in American agriculture, and more. This Companion: Introduces readers to a uniquely wide range of topics within the study of American agricultural history Provides a narrative summary and a critical examination of field-defining works Introduces specific topics within American agricultural history such as agrarian reform, agribusiness, and agricultural power and production Discusses the impacts of American agriculture on different groups including Native Americans, African Americans, and European, Asian, and Latinx immigrants Views the agricultural history of America through new interdisciplinary lenses of race, class, and the environment Explores depictions of American agriculture in film, popular music, literature, and art A Companion to American Agricultural History is an essential resource for introductory students and general readers seeking a concise overview of the subject, and for graduate students and scholars wanting to learn about a particular aspect of American agricultural history.
Author: Duccio Bonavia
Publisher: Cambridge University Press
ISBN: 1107023033
Category : History
Languages : en
Pages : 605
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Book Description
This book examines one of the thorniest problems of ancient American archaeology: the origins and domestication of maize. Using a variety of scientific techniques, Duccio Bonavia explores the development of maize, its adaptation to varying climates, and its fundamental role in ancient American cultures. An appendix (by Alexander Grobman) provides the first ever comprehensive compilation of maize genetic data, correlating this data with the archaeological evidence presented throughout the book. This book provides a unique interpretation of questions of dating and evolution, supported by extensive data, following the spread of maize from South to North America, and eventually to Europe and beyond.
Author: William H. Hatheway
Publisher: National Academies
ISBN:
Category : Corn
Languages : en
Pages : 88
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Book Description
Author: University of California, Davis. Agricultural History Center
Publisher:
ISBN:
Category : Agricultural history
Languages : en
Pages : 112
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Book Description
Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 346
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Book Description
Author: Arnel R. Hallauer
Publisher: Springer Science & Business Media
ISBN: 1441907661
Category : Science
Languages : en
Pages : 669
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Book Description
Maize is used in an endless list of products that are directly or indirectly related to human nutrition and food security. Maize is grown in producer farms, farmers depend on genetically improved cultivars, and maize breeders develop improved maize cultivars for farmers. Nikolai I. Vavilov defined plant breeding as plant evolution directed by man. Among crops, maize is one of the most successful examples for breeder-directed evolution. Maize is a cross-pollinated species with unique and separate male and female organs allowing techniques from both self and cross-pollinated crops to be utilized. As a consequence, a diverse set of breeding methods can be utilized for the development of various maize cultivar types for all economic conditions (e.g., improved populations, inbred lines, and their hybrids for different types of markets). Maize breeding is the science of maize cultivar development. Public investment in maize breeding from 1865 to 1996 was $3 billion (Crosbie et al., 2004) and the return on investment was $260 billion as a consequence of applied maize breeding, even without full understanding of the genetic basis of heterosis. The principles of quantitative genetics have been successfully applied by maize breeders worldwide to adapt and improve germplasm sources of cultivars for very simple traits (e.g. maize flowering) and very complex ones (e.g., grain yield). For instance, genomic efforts have isolated early-maturing genes and QTL for potential MAS but very simple and low cost phenotypic efforts have caused significant and fast genetic progress across genotypes moving elite tropical and late temperate maize northward with minimal investment. Quantitative genetics has allowed the integration of pre-breeding with cultivar development by characterizing populations genetically, adapting them to places never thought of (e.g., tropical to short-seasons), improving them by all sorts of intra- and inter-population recurrent selection methods, extracting lines with more probability of success, and exploiting inbreeding and heterosis. Quantitative genetics in maize breeding has improved the odds of developing outstanding maize cultivars from genetically broad based improved populations such as B73. The inbred-hybrid concept in maize was a public sector invention 100 years ago and it is still considered one of the greatest achievements in plant breeding. Maize hybrids grown by farmers today are still produced following this methodology and there is still no limit to genetic improvement when most genes are targeted in the breeding process. Heterotic effects are unique for each hybrid and exotic genetic materials (e.g., tropical, early maturing) carry useful alleles for complex traits not present in the B73 genome just sequenced while increasing the genetic diversity of U.S. hybrids. Breeding programs based on classical quantitative genetics and selection methods will be the basis for proving theoretical approaches on breeding plans based on molecular markers. Mating designs still offer large sample sizes when compared to QTL approaches and there is still a need to successful integration of these methods. There is a need to increase the genetic diversity of maize hybrids available in the market (e.g., there is a need to increase the number of early maturing testers in the northern U.S.). Public programs can still develop new and genetically diverse products not available in industry. However, public U.S. maize breeding programs have either been discontinued or are eroding because of decreasing state and federal funding toward basic science. Future significant genetic gains in maize are dependent on the incorporation of useful and unique genetic diversity not available in industry (e.g., NDSU EarlyGEM lines). The integration of pre-breeding methods with cultivar development should enhance future breeding efforts to maintain active public breeding programs not only adapting and improving genetically broad-based germplasm but also developing unique products and training the next generation of maize breeders producing research dissertations directly linked to breeding programs. This is especially important in areas where commercial hybrids are not locally bred. More than ever public and private institutions are encouraged to cooperate in order to share breeding rights, research goals, winter nurseries, managed stress environments, and latest technology for the benefit of producing the best possible hybrids for farmers with the least cost. We have the opportunity to link both classical and modern technology for the benefit of breeding in close cooperation with industry without the need for investing in academic labs and time (e.g., industry labs take a week vs months/years in academic labs for the same work). This volume, as part of the Handbook of Plant Breeding series, aims to increase awareness of the relative value and impact of maize breeding for food, feed, and fuel security. Without breeding programs continuously developing improved germplasm, no technology can develop improved cultivars. Quantitative Genetics in Maize Breeding presents principles and data that can be applied to maximize genetic improvement of germplasm and develop superior genotypes in different crops. The topics included should be of interest of graduate students and breeders conducting research not only on breeding and selection methods but also developing pure lines and hybrid cultivars in crop species. This volume is a unique and permanent contribution to breeders, geneticists, students, policy makers, and land-grant institutions still promoting quality research in applied plant breeding as opposed to promoting grant monies and indirect costs at any short-term cost. The book is dedicated to those who envision the development of the next generation of cultivars with less need of water and inputs, with better nutrition; and with higher percentages of exotic germplasm as well as those that pursue independent research goals before searching for funding. Scientists are encouraged to use all possible breeding methodologies available (e.g., transgenics, classical breeding, MAS, and all possible combinations could be used with specific sound long and short-term goals on mind) once germplasm is chosen making wise decisions with proven and scientifically sound technologies for assisting current breeding efforts depending on the particular trait under selection. Arnel R. Hallauer is C. F. Curtiss Distinguished Professor in Agriculture (Emeritus) at Iowa State University (ISU). Dr. Hallauer has led maize-breeding research for mid-season maturity at ISU since 1958. His work has had a worldwide impact on plant-breeding programs, industry, and students and was named a member of the National Academy of Sciences. Hallauer is a native of Kansas, USA. José B. Miranda Filho is full-professor in the Department of Genetics, Escola Superior de Agricultura Luiz de Queiroz - University of São Paulo located at Piracicaba, Brazil. His research interests have emphasized development of quantitative genetic theory and its application to maize breeding. Miranda Filho is native of Pirassununga, São Paulo, Brazil. M.J. Carena is professor of plant sciences at North Dakota State University (NDSU). Dr. Carena has led maize-breeding research for short-season maturity at NDSU since 1999. This program is currently one the of the few public U.S. programs left integrating pre-breeding with cultivar development and training in applied maize breeding. He teaches Quantitative Genetics and Crop Breeding Techniques at NDSU. Carena is a native of Buenos Aires, Argentina. http://www.ag.ndsu.nodak.edu/plantsci/faculty/Carena.htm
Author: C. Wayne Smith
Publisher: John Wiley & Sons
ISBN: 9780471411840
Category : Technology & Engineering
Languages : en
Pages : 984
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Book Description
Your all-in-one guide to corn. This book provides practical advice on planting techniques and rates, seed production, treating plant diseases, insect infestation and weeds, harvesting, processing, and worldwide utilization. This is the fourth, and final, volume in the series of comprehensive references on the major crops of the world. Covers new biotechnology techniques for plant breeding and pest management Provides practical advice on planting techniques and rates, seed production, treating plant diseases, insect infestation and weeds, harvesting, processing and worldwide utilization.
Author: Clarence H. Danhof
Publisher: Harvard University Press
ISBN: 9780674107700
Category : Business & Economics
Languages : en
Pages : 346
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Book Description
American agriculture changed radically between 1820 and 1870. In turning slowly from subsistence to commercial farming, farmers on the average doubled the portion of their production places on the market, and thereby laid the foundations for today's highly productive agricultural industry. But the modern system was by no means inevitable. It evolved slowly through an intricate process in which innovative and imitative entrepreneurs were the key instruments.
Author: Cynthia Clampitt
Publisher: University of Illinois Press
ISBN: 0252096878
Category : Cooking
Languages : en
Pages : 305
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Book Description
Food historian Cynthia Clampitt pens the epic story of what happened when Mesoamerican farmers bred a nondescript grass into a staff of life so prolific, so protean, that it represents nothing less than one of humankind's greatest achievements. Blending history with expert reportage, she traces the disparate threads that have woven corn into the fabric of our diet, politics, economy, science, and cuisine. At the same time she explores its future as a source of energy and the foundation of seemingly limitless green technologies. The result is a bourbon-to-biofuels portrait of the astonishing plant that sustains the world.
