Experiments in Plant-hybridisation PDF Download

Author: Gregor Mendel
Publisher:
ISBN:
Category : Hybridization, Vegetable
Languages : en
Pages : 48

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Author: Gregor Mendel
Publisher: Harvard University Press
ISBN: 9780674278004
Category : Electronic books
Languages : en
Pages : 56

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Author: Gregor Mendel
Publisher: Cosimo, Inc.
ISBN: 1605202576
Category : Science
Languages : en
Pages : 54

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Experiments which in previous years were made with ornamental plants have already afforded evidence that the hybrids, as a rule, are not exactly intermediate between the parental species. With some of the more striking characters, those, for instance, which relate to the form and size of the leaves, the pubescence of the several parts, etc., the intermediate, indeed, is nearly always to be seen; in other cases, however, one of the two parental characters is so preponderant that it is difficult, or quite impossible, to detect the other in the hybrid. from 4. The Forms of the Hybrid One of the most influential and important scientific works ever written, the 1865 paper Experiments in Plant Hybridisation was all but ignored in its day, and its author, Austrian priest and scientist GREGOR JOHANN MENDEL (18221884), died before seeing the dramatic long-term impact of his work, which was rediscovered at the turn of the 20th century and is now considered foundational to modern genetics. A simple, eloquent description of his 18561863 study of the inheritance of traits in pea plantsMendel analyzed 29,000 of themthis is essential reading for biology students and readers of science history. Cosimo presents this compact edition from the 1909 translation by British geneticist WILLIAM BATESON (18611926).

Author: Harvard University Press
Publisher: Harvard University Press
ISBN: 0674251660
Category : History
Languages : en
Pages : 178

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Racism in America has been the subject of serious scholarship for decades. At Harvard University Press, we’ve had the honor of publishing some of the most influential books on the subject. The excerpts in this volume—culled from works of history, law, sociology, medicine, economics, critical theory, philosophy, art, and literature—are an invitation to understand anti-Black racism through the eyes of our most incisive commentators. Readers will find such classic selections as Toni Morrison’s description of the Africanist presence in the White American literary imagination, Walter Johnson’s depiction of the nation’s largest slave market, and Stuart Hall’s theorization of the relationship between race and nationhood. More recent voices include Khalil Gibran Muhammad on the pernicious myth of Black criminality, Elizabeth Hinton on the link between mass incarceration and 1960s social welfare programs, Anthony Abraham Jack on how elite institutions continue to fail first-generation college students, Mehrsa Baradaran on the racial wealth gap, Nicole Fleetwood on carceral art, and Joshua Bennett on the anti-Black bias implicit in how we talk about animals and the environment. Because the experiences of non-White people are integral to the history of racism and often bound up in the story of Black Americans, we have included writers who focus on the struggles of Native Americans, Latinos, and Asians as well. Racism in America is for all curious readers, teachers, and students who wish to discover for themselves the complex and rewarding intellectual work that has sustained our national conversation on race and will continue to guide us in future years.

Author: G. Kalloo
Publisher: Springer Science & Business Media
ISBN: 3642843069
Category : Technology & Engineering
Languages : en
Pages : 282

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Wild taxa are invaluable sources of resistance to diseases, insects/ pests, nematodes, temperature extremes, salinity and alkalinity stresses, and also of nutritional quality; adaptation; genetic diversity and new species. Utilization of wild relatives of a crop depends largely upon its crossability relations with cultivated varieties. Sev eral wild species are not crossable with the commercial cultivars due to various isolation barriers. Furthermore, in a few cases, hybridiza tion is possible only in one direction and reciprocal crosses are not successful, thus depriving the utilization of desired cytoplasm of many species. However, techniques have been developed to over come many barriers and hybrid plants are produced. New crop species have been developed by overcoming the F 1 sterility and producing amphidiploids and such crops are commercially being grown in the field. The segregation pattern ofF 1 hybrids produced by distant hybridization in segregating generations are different from the intervarietal hybrids. In former cases, generally, unidirectional segregation takes place in early generations and accordingly, selec tion procedures are adopted. In most of the cases, backcross or modified backcross methods have been followed to utilize wild species, and thus numerous types of resistance and other economical attributes have been transferred in the recurrent parents. Protoplast fusion has been amply demonstrated in a number of cases where sexual hybridization was not possible and, as a result, hybrids have been produced.

Author: Daniel J. Fairbanks
Publisher: Rowman & Littlefield
ISBN: 1633888398
Category : Biography & Autobiography
Languages : en
Pages : 245

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Gregor Mendel, the founder of genetics, is renowned as one of the world’s most ingenious and influential scientists. Nonetheless, he remains misunderstood and enigmatic, his history shrouded in controversy and myth. Escaping poverty, he joined a scholarly community of Augustinian friars in a monastery and studied at the University of Vienna under some of Europe’s most accomplished scientists. He returned to a tumultuous milieu at the monastery as he and his fellow friars suffered a harrowing investigation accusing them of secularism and pantheistic philosophy. Against this backdrop, Mendel initiated an epic set of experiments with the common garden pea that would lead him to reveal the mystery of inheritance. The article he published would become a classic in the history of science. Darwin’s Origin of Species shook the world in 1859. Its impact eclipsed Mendel’s discovery, presented just a few years after Darwin’s pivotal book. Unlike Darwin, who witnessed his work attain immediate worldwide fame (and infamy), Mendel would never know how powerfully his discoveries would impact science and humanity; his achievements languished in obscurity until well beyond his death. “The laws governing inheritance are quite unknown,” Darwin lamented just a few pages into the Origin of Species. Mendel had discovered and presented those laws, which ultimately would bridge the most gaping chasm in Darwin’s theory. In 1900, at the dawn of the twentieth century, several influential scientists independently rediscovered Mendel’s theory, elevating it to the highest echelon of scientific triumph. The new science, christened genetics, immediately generated controversies, some of which continue to the present. Throughout modern history, proponents and detractors alike have coopted Mendel’s theory to buttress their worldviews, fueling the flames of disputes and prolonging political battles. Unquestionably, however, it has served as the foundation for some history’s greatest scientific advances. This book commemorates Mendel’s life and legacy at the bicentennial of his birth. It interweaves traditional accounts of his history with newly discovered evidence to reveal an extraordinary teacher, a resolute priest and abbot, and a complex and guileless scientist whose momentous discoveries have remained essentially unchanged for more than a century and a half.

Author: Cheryl Bardoe
Publisher:
ISBN: 9781484462164
Category :
Languages : en
Pages : 0

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Presents the life of the geneticist, discussing the poverty of his childhood, his struggle to get an education, his life as a monk, his discovery of the laws of genetics, and the rediscovery of his work thirty-five years after its publication.

Author: William Bateson
Publisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 238

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Bateson named the science "genetics" in 1905-1906. This is the first textbook in English on the subject of genetics.

Author: P. M. Priyadarshan
Publisher: Springer Nature
ISBN: 9811370958
Category : Science
Languages : en
Pages : 573

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Book Description
This book offers a detailed overview of both conventional and modern approaches to plant breeding. In 25 chapters, it explores various aspects of conventional and modern means of plant breeding, including: history, objective, activities, centres of origin, plant introduction, reproduction, incompatibility, sterility, biometrics, selection, hybridization, methods of breeding both self- and cross- pollinated crops, heterosis, synthetic varieties, induced mutations and polyploidy, distant hybridization, quality breeding, ideotype breeding, resistance breeding, breeding for stress resistance, G x E interactions, tissue culture, genetic engineering, molecular breeding, genomics, gene action and varietal release. The book’s content addresses the needs of students worldwide. Modern methods like molecular breeding and genomics are dealt with extensively so as to provide a firm foundation and equip readers to read further advanced books. Each chapter discusses the respective subject as comprehensively as possible, and includes a section on further reading at the end. Info-boxes highlight the latest advances, and care has been taken to include nearly all topics required under the curricula of MS programs. As such, the book provides a much-needed reference guide for MS students around the globe.

Author: James Marins
Publisher: Editora Voo
ISBN: 6589686130
Category : Business & Economics
Languages : en
Pages : 519

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Book Description
In a time of correction, terrorism, corruption, unemployment, hunger, cancer, depression, in which we are constantly bombarded by catastrophic news, generating the "negative instinct" referred to by Hans Rosling, the question that surrounds us is: who cares? Based on a narrative that is both light and impressively profound, James Marins sets out to fight apathy and ignorance and make us feel the potential of the era in which we live. After all, our capacity for opinion, action, participation and collaboration at scale for systemic changes has never been greater. To understand our possibilities, we cannot limit ourselves to the narrow view of our personal horizon. We need a more comprehensive, complex and systemic analysis. To do so, Marins starts from three fundamental dimensions of the complex richness of our contemporary human condition: the Transforming Movement of Freedom, the Transforming Movement of Economy and the Transforming Movement of Consciousness. All these movements are interconnected, in order to constitute the Massive Transformative Movement, the backdrop in which the author weaves the entire work. The tools for action and for the updating of ourselves are available to all who care, in what is humanity's best time, our best opportunity. The Age of Impact.