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This work is a comprehensive history of wheat across all its main areas of production. New techniques such as in vitro culture now enable the development of a greater level of understanding of the genetics of wheat.
A biography of a staple grain we often take for granted, exploring how wheat went from wild grass to a world-shaping crop. At breakfast tables and bakeries, we take for granted a grain that has made human civilization possible, a cereal whose humble origins belie its world-shaping power: wheat. Amber Waves tells the story of a group of grass species that first grew in scattered stands in the foothills of the Middle East until our ancestors discovered their value as a source of food. Over thousands of years, we moved their seeds to all but the polar regions of Earth, slowly cultivating what we now know as wheat, and in the process creating a world of cuisines that uses wheat seeds as a staple food. Wheat spread across the globe, but as ecologist Catherine Zabinski shows us, a biography of wheat is not only the story of how plants ensure their own success: from the earliest bread to the most mouthwatering pasta, it is also a story of human ingenuity in producing enough food for ourselves and our communities. Since the first harvest of the ancient grain, we have perfected our farming systems to grow massive quantities of food, producing one of our species’ global mega crops—but at a great cost to ecological systems. And despite our vast capacity to grow food, we face problems with undernourishment both close to home and around the world. Weaving together history, evolution, and ecology, Zabinski’s tale explores much more than the wild roots and rise of a now-ubiquitous grain: it illuminates our complex relationship with our crops, both how we have transformed the plant species we use as food, and how our society—our culture—has changed in response to the need to secure food sources. From the origins of agriculture to gluten sensitivities, from our first selection of the largest seeds from wheat’s wild progenitors to the sequencing of the wheat genome and genetic engineering, Amber Waves sheds new light on how we grow the food that sustains so much human life.
Geographers is an annual collection of studies on individuals who have made major contributions to the development of geography and geographical thought. Subjects are drawn from all periods and from all parts of the world, and include famous names as well as those less well known, including explorers, independent thinkers and scholars. Each paper describes the geographer's education, life and work and discusses their influence and spread of academic ideas. Each study includes a select bibliography and a brief chronology. The work includes a general index, and a cumulative index of geographers listed in volumes published to date. Published under the auspices of the International Geographical Union.

Daily Digest

United States. Dept. of Agriculture. Office of Information. PRESS SERVICE

Published: 1936

Total Pages: 610


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World population is growing at an alarming rate and may exceed 9.7 billion by 2050, whereas agricultural productivity has been negatively affected due to yield limiting factors such as biotic and abiotic stresses as a result of global climate change. Wheat is a staple crop for ~20% of the world population and its yield needs be augmented correspondingly in order to satisfy the demands of our increasing world population. “Green revolution”, the introduction of semi-dwarf, high yielding wheat varieties along with improved agronomic management practices, gave rise to a substantial increase in wheat production and self-sufficiency in developing countries that include Mexico, India and other south Asian countries. Since the late 1980’s, however, wheat yield is at a standoff with little fluctuation. The current trend is thus insufficient to meet the demands of an increasing world population. Therefore, while conventional breeding has had a great impact on wheat yield, with climate change becoming a reality, newer molecular breeding and management tools are needed to meet the goal of improving wheat yield for the future. With the advance in our understanding of the wheat genome and more importantly, the role of environmental interactions on productivity, the idea of genomic selection has been proposed to select for multi-genic quantitative traits early in the breeding cycle. Accordingly genomic selection may remodel wheat breeding with gain that is predicted to be 3 to 5 times that of crossbreeding. Phenomics (high-throughput phenotyping) is another fairly recent advancement using contemporary sensors for wheat germplasm screening and as a selection tool. Lastly, CRISPR/Cas9 ribonucleoprotein mediated genome editing technology has been successfully utilized for efficient and specific genome editing of hexaploid bread wheat. In summary, there has been exciting progresses in the development of non-GM wheat plants resistant to biotic and abiotic stress and/or wheat with improved nutritional quality. We believe it is important to highlight these novel research accomplishments for a broader audience, with the hope that our readers will ultimately adopt these powerful technologies for crops improvement in order to meet the demands of an expanding world population.