Margaret Johnson Libros Populares

Margaret Johnson Biografía y Hechos

Margaret Brown Newton (20 de abril de 1887 - 6 de abril de 1971) fue una fitopatóloga y micóloga canadiense de renombre internacional [1]​ por su investigación pionera sobre la roya del tallo Puccinia graminis, particularmente por su efecto sobre el trigo, un producto agrícola canadiense básico .Newton nunca se casó y era considerada una persona amigable y persistente, con empuje y una personalidad cálida. [2]​ A menudo "trabajaba hasta el agotamiento". [3]​ Primeros años Newton nació en Montreal el 20 de abril de 1887, hijo de John Newton y Elizabeth Brown. Tenía cuatro hermanos menores, tres hermanos llamados Robert, John y William, y una hermana llamada Dorothy. [4]​ Su padre era un químico interesado en la aplicación de la ciencia a la agricultura. [1]​ Su educación formal comenzó en una escuela de un solo salón en North Nation Mills, [4]​ una ciudad industrial de unos 300 residentes en el río Petite-Nation al norte de Plaisance . La familia se mudó a Montreal cuando su padre aceptó un trabajo mejor remunerado. Allí, Newton completó la escuela secundaria y dos años de secundaria, tras lo cual la familia regresó a Plaisance. [4]​ Aquí, Newton completó la escuela secundaria, asistió a una escuela rural durante dos años más y luego enseñó en la escuela de North Nation Mills durante un año. [4]​ Luego se mudó a Vankleek Hill en Ontario y continuó su educación en el Vankleek Hill Collegiate Institute antes de completar su formación docente en la Escuela Normal de Toronto . [4]​Luego enseñó en Lachine durante tres años y en la escuela de North Nation Mills durante un año. [4]​ El dinero que ahorró se utilizó para financiar su educación postsecundaria . [1]​ Apasionada por el arte, [2]​ Newton se matriculó en un programa de Artes en la Universidad McMaster en Hamilton, Ontario, completando un año de estudios antes de regresar a Montreal, donde se matriculó en un programa de agricultura en el Macdonald College . [5]​ Allí, fue la única mujer en una clase de 50 estudiantes y recibió la Medalla Académica del Gobernador General por sus máximos logros. [2]​ En ese momento, se unió a la Sociedad Quebec para la Protección de las Plantas, convirtiéndose en su primera mujer miembro. [6]​ También fue miembro de la sociedad de debate, y presidenta de la sociedad literaria durante un año. [2]​ En su segundo año en Macdonald College, tomó el curso de micología de WP Fraser y se interesó en su investigación sobre las enfermedades de las plantas causadas por la roya de los cereales, lo que la llevó a interesarse y estudiar la patología vegetal. [4]​ Su asesor, WP Fraser, viajó al oeste de Canadá en 1917 para poder comenzar a investigar la roya del tallo provocada por una devastadora epidemia en 1916 [7]​ que había destruido 100 millones de fanegas de trigo [8]​ por un valor aproximado de 200 millones de dólares. Asignó a Newton para estudiar las muestras que recogió, quien aceptó sólo después de que el decano de la escuela eliminó las restricciones sobre el uso nocturno de las instalaciones del laboratorio por parte de las mujeres; [7]​ todavía tuvo que lidiar con el toque de queda de las 22:00 en su residencia. [2]​ Durante su investigación, descubrió que las esporas de la roya del tallo infectaban el trigo con distinta rapacidad. [2]​Newton y su amiga Pearl Clayton Stanford se graduaron en 1918 con una Licenciatura en Ciencias Agrícolas (BSA), convirtiéndose en las primeras mujeres en completar un título en la universidad. [5]​ [2]​ Al año siguiente, recibió una Maestría en Ciencias (M.Sc.), [9]​ para la cual su tesis La resistencia de las variedades de trigo a Puccinia graminis [4]​ cubrió "diferentes formas de esporas dentro del hongo de la roya del tallo". [10]​ En todo momento, su rendimiento académico fue el mejor de su clase. [11]​ Investigación En 1920, como resultado de su investigación sobre las royas de los cereales mientras completaba sus estudios universitarios y de maestría en Macdonald College, le ofrecieron un puesto de investigación en la Universidad de Saskatchewan en Saskatoon . [7]​ Ella aceptó, y de 1922 a 1925 estuvo en el cuerpo docente como profesora asistente en el Departamento de Biología, [12]​ uniéndose a su antiguo asesor WP Fraser, [6]​ entre cuyas funciones se incluía la docencia. [9]​ Durante este tiempo, realizó sus estudios de doctorado en la Universidad de Minnesota, [5]​ donde bajo la supervisión de Elvin C. Stakman [12]​ fue la primera mujer en Canadá en completar su Doctorado en Filosofía (Ph.D.) en Ciencias Agrícolas en 1922 [5]​ con la disertación Estudios sobre la roya del tallo del trigo (Puccinia graminis tritici) . [4]​ Stakman también había estado investigando la roya del tallo. [2]​ Lo hizo pasando seis meses en Minnesota y luego seis meses en Saskatoon. [2]​En 1925, William Richard Motherwell, [13]​ el ministro federal de Agricultura, la invitó a ayudar a administrar el recién inaugurado Laboratorio de Investigación Dominion Rust en la Universidad de Manitoba en Winnipeg, establecido como respuesta a los brotes de roya en 1916, 1919. y 1921. [7]​ Fue nombrada fitopatóloga principal del laboratorio, cargo que mantuvo hasta su jubilación, [9]​ y la trajo junto con su antiguo alumno Thorvaldur Johnson como asistente de investigación. [2]​ Estableció un estudio anual sobre la roya del tallo en el oeste de Canadá, [6]​ [12]​ descubriendo una diversidad de razas en las poblaciones de roya, [14]​ lo que finalmente le permitió descubrir y catalogar las especies de trigo y las especies cruzadas resistentes a la roya del tallo. [9]​ Publicó 45 artículos científicos sobre hongos de roya del tallo y 11 resúmenes de investigaciones. [15]​ En 1929, se convirtió en miembro fundador de la Sociedad Canadiense de Fitopatología [2]​ y se convirtió en una de las editoras de la revista Phytopathology . [5]​ Newton identificó razas fisiológicamente distintas de Puccinia graminis y se centró en determinar su estructura genética, [7]​ fisiología, [2]​ origen y ciclo de vida. [9]​ [16]​ Investigó la roya lineal en el trigo, la cebada y la roya de la hoja del trigo, y los factores ambientales en la expresión de enfermedades en las plantas de trigo. [9]​ También investigó la estructura genética de los patógenos de la roya del trigo. [15]​La investigación atrajo la atención mundial, particularmente de científicos de países productores de granos que enfrentan pérdidas de productividad debido a la roya del tallo. [16]​ En ese momento era considerada internacionalmente como una autoridad en royas de las plantas, [11]​ y representó a Canadá en convenciones científicas en los Estados Unidos, Europa y Rusia . [14]​ Su investigación fue económicamente significativa, ya que se utilizó para desarrollar cultivares de trigo resistentes a la roya y dio como resultado una "reducción de las pérdidas anuales de trigo debido a la roya de 30 millones de bushels a prácticamente ninguna". [5]​ La roya del trigo ya no es un problema importante en Canadá. [17]​ En 1933, el Gobie.... Descubre los libros populares de Margaret Johnson. Encuentra los 100 libros más populares de Margaret Johnson

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Best Seller Margaret Johnson Libros de 2024

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    Restoration Heart

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    Margaret Thatcher

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    From a Low and Quiet Sea

    Donal Ryan

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    Unti Memoir

    Anon9780063387263

    Unti Memoir has descriptive copy which is not yet available from the Publisher.

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    Just One Night: A Rouge Contemporary Romance

    Lauren Layne

    New York's hottest "sexpert" has been living a lie and it's up to one man to keep her honest ... all night long. Riley McKenna knows sex good sex, bad sex, kinky sex. Her article...

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    A Perfect Partnership

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    Harold Wilson

    Nick Thomas-Symonds

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    Dr Johnson's London

    Liza Picard

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    Not Quite the Diplomat

    Chris Patten

    Not Quite the Diplomat describes what has been happening in Britain, Europe and the world since 1997 from the perspective of one at the heart of international events. In examining ...

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    Red Velvet Slippers

    Margaret Johnson

    June Parks has a flat tire in a rainstorm. A passer by stops to help as she is putting on the last lug nut. The next time she is conscious she is on the floor of truck being taken ...

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    Planes, Trains and Toilet Doors

    Matt Chorley

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    Parliament: The Biography (Volume II - Reform)

    Chris Bryant

    Over the last two hundred years Parliament has witnessed and effected dramatic and often turbulent change. Political parties rose – and fell. The old aristocratic order passed awa...

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    Sad Janet

    Lucie Britsch

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    The Making Of The British Army

    Allan Mallinson

    Edgehill, 1642: Surveying the disastrous scene in the aftermath of the first battle of the English Civil War, Oliver Cromwell realized that war could no longer be waged in the old,...

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    British Society Since 1945

    Arthur Marwick

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    Olive Blackwood Takes Action!

    Sonja Thomas

    An anxious aspiring filmmaker bands together with an unlikely friend group to protect their beloved state animal in this heartwarming contemporary middle grade novel perfect for fa...

  • Tex-Wis Company Et Al v. Margaret Johnson Et Al sinopsis y comentarios

    Tex-Wis Company Et Al v. Margaret Johnson Et Al

    Supreme Court of Texas

    Plaintiffs Margaret Johnson and others brought suit against TexWis Company and other persons claiming under TexWis for title to, and possession of, a 53acre tract of land and an ad...

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    The Lamb

    Lucy Rose

    The stray that changed everything was called Eden. She found us in the heart of a snowstorm. Margot and Mama have lived by a forest since Margot can remember. Together, they take i...

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    Small Men on the Wrong Side of History

    Ed West

    'An entertaining, wideranging defence and explanation of the conservative way of seeing the world . . . suffused with generosity and wit' Catholic Herald Brought up by eccentric...

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    Get It Together: The NHS

    Zoe Williams

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    Margaret E. Johnson v. Wabash County

    Supreme Court Of Indiana

    Plaintiffappellant Margaret Johnson (Johnson) brought an action against Defendantappellee Wabash County (County) to recover unpaid salary allegedly owed her for services rendered a...

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    H. F. Johnson v. Margaret D. Morris Et Al.

    Supreme Court of Alabama

    This is an appeal from a judgment granting a permanent injunction prohibiting Johnson from constructing a roadway across the Morris' property. The issue is whether the t...

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    A Pressing Engagement (Storycuts)

    Jilly Cooper OBE

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    Who Really Runs Ireland?

    Matt Cooper

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    The End of Getting Lost

    Robin Kirman

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    The Churchill Factor

    Boris Johnson

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    Stuart Maconie

    'He is as funny as Bryson and as wise as Orwell' ObserverIt was the spirit of our finest hour, the backbone of our postwar greatness, and it promoted some of the boldest and most b...

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    Topographia Hibernica

    Blindboy Boatclub

    'Powered by immense, perverse energy out of the Limerick idiom, the collection generates a singular music that is memorable, unsettling and humane' Guardian'Eerie, dark and twisted...

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    Fifty Fashion Looks that Changed the 1970s

    DESIGN MUSEUM ENTERPRISE LTD & Paula Reed

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    Chuck Palahniuk

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    A Masters Degree In Stupid

    Margaret Johnson

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    Covid By Numbers

    David Spiegelhalter & Anthony Masters

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    The Other Custers

    Bill Yenne & George Armstrong Custer

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    Dating Game

    Danielle Steel

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    Margaret Johnson v. North Dakota Workers

    Supreme Court of North Dakota

    ERICKSTAD, Chief Justice. This appeal arises from a dispute between the North Dakota Workers Compensation Bureau and claimant Margaret Johnson regarding the amount of re...

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    The Parliament of Man

    Paul Kennedy

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    Malina

    Ingeborg Bachmann

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    50 People Who Buggered Up Britain

    Quentin Letts

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    Politics

    Nick Clegg

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    Edward Heath

    John Campbell

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    The Gospel of Ramakrishna

    Mahendra Nath Gupta

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    PLANE BEFORE SPEAKING: Listen Better and Speak More Clearly

    Margaret Johnson

    My goal was to write a short, easytoread book with suggestions the reader could begin to use immediately. As a therapist I know that learning, strengthening and refining the skills...

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    What We Say Goes

    Noam Chomsky

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    Leadership in War

    Andrew Roberts

    'Wonderful ... among military historians, Roberts is Britain's crown gem' Wall Street Journal Taking us from the French Revolution to the Cold War and the Falklands, celebrated his...

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    Willie

    Margaret Johnson

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    Europe

    Norman Davies

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  • Daddy sinopsis y comentarios

    Daddy

    Emma Cline

    'Taut, beautiful and savage' GuardianA man travels to his son's school to deal with the fallout of a violent attack and to make sure his son will not lose his college place. But wh...

  • Things Can Only Get Worse? sinopsis y comentarios

    Things Can Only Get Worse?

    John O'Farrell

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