2,228 research outputs found
Producción de trigo: evolución, demanda y alternativas para mejorarla. Una visión ecofisiológica
No full textLa producción de trigo a nivel global es clave para alcanzar un estándar razonable de seguridad alimentaria. Mejorar los rendimientos obtenidos en un país exportador como Argentina permite aumentar los excedentes de exportación que, asociado a la búsqueda de nuevos mercados, incrementa los ingresos de divisas al país. En este trabajo se discuten, desde una perspectiva ecofisiológica, alternativas para incrementar dichos rendimientos.EEA PergaminoFil: Gonzzález, Fernanda. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Ecofisiología; Argentina.Fil: Perez-Gianmarco, Thomas. Centro de Investigación y Transferencia del Noroeste de la Provincia de Buenos Aires (CITNOBA); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina.Fil: Pretini, Nicole. Centro de Investigación y Transferencia del Noroeste de la Provincia de Buenos Aires (CITNOBA); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina.Fil: Curin, Facundo. Centro de Investigación y Transferencia del Noroeste de la Provincia de Buenos Aires (CITNOBA); Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Argentina
Resultados da rede de ensaios cooperativos para a resistência à brusone da espiga de trigo (Recorbe), safras 2018 e 2019.
No full textNo Brasil, as ações para o desenvolvimento de cultivares de trigo resistentes à brusone, doença causada pelo fungo Pyricularia oryzae, têm sido inten-sas desde o primeiro relato desta doença, em meados da década de 1980 (Igarashi et al., 1986; Goulart et al., 1995; Cruz et al., 2010). Apesar de esfor-ços e importantes avanços em relação à disponibilidade de cultivares de trigo com níveis superiores de resistência à brusone, o controle da doença com base na resistência genética ainda não é satisfatório (Maciel, 2018). A suscetibili-dade à bruone demonstrada pelo conjunto de cultivares de trigo atualmente indicadas para cultivo no país pode estar associada à estreita base genética destas cultivares. Uma iniciativa para contornar este problema é a busca por novas fontes de resistência à doença para que possam ser utilizadas no pro-cesso de geração de novas cultivares de trigo (Cruz et al., 2010)
Cómo afectan los genes de sensibilidad al fotoperíodo PPD-1 al desarrollo del trigo a antesis?
No full textLa sensibilidad al fotoperiodo afecta la adaptación del trigo al ambienteal modifiar: (i) la fecha de antesis, (ii) la duración de las etapas vegetativa y reproductiva previas a antesis, y (iii) la generación de estructuras durante dichas etapas. Utilizando líneas isogénicas para genes de sensibilidad al fotoperiodo (Ppd-1) se observó que el orden de insensibilidad para todas las etapas estudiadas fue PpdD1a>Ppd-A1a>Ppd-B1a. No se detectó especificidad de ningún alelo con alguna etapa particular, ni tampoco efectos aditivos entre los alelos.EEA PergaminoFil: Slafer, Gustavo. Universidad de Lleida. Instituto Catalana de Investigación y Estudios Avanzados (ICREA). Departamento Producción Vegetal y Ciencias Forestales y AGROTECNIO; España.Fil: González, Fernanda. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Ecofisiología; Argentina. Centro de Investigacion y Transferencia del Noroeste de la Provincia de Buenos Aires (CIT NOBA); Argentina
Progreso de rendimiento en trigo argentino en los últimos 30 años bajo condiciones potenciales y limitadas por nitrógeno y/o agua
No full textEl progreso genético del rendimiento en trigo resultó de 0,8 % anual para los cultivares liberados en los últimos 30 años. Dicho progreso se mantuvo ante condiciones limitantes de nitrógeno y agua, reforzando la idea de que la mejora genética en ambientes potenciales se trasladaría a ambientes limitantes. La mejora del rendimiento estuvo asociado principalmente a un aumento en el número de granos e índice de cosecha.EEA PergaminoFil: Curin, Facundo. Centro de Investigacion y Transferencia del Noroeste de la Provincia de Buenos Aires (CIT NOBA); Argentina.Fil: Otegui, Matría Elena. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Ecofisiología; Argentina.Fil: González, Fernanda Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Pergamino. Ecofisiología; Argentina. Centro de Investigación y Transferencia del Noroeste de la Provincia de Buenos Aires (CIT NOBA); Argentina
Similaridade genética em acessos de Aegilops tauschii, Triticum durum e híbridos interespecíficos.
No full text'To Save Them from the Dangers to their Faith’: Documenting Student Life at Catholic Women's Colleges
No full textThis article focuses on student life at Catholic women's colleges in the United States during the 20th century. These colleges helped acculturate many daughters of immigrants to middle-class American society, at the same time creating a specifically female and Catholic culture on college campuses. This evolving culture, which was characterized by the ideals of femininity, religion, and service, can be reconstructed through documentation from the college archives.Peer reviewe
‘A Well-Balanced Education’: Catholic Women’s Colleges in New Jersey, 1900-1970
No full textBy examining Catholic women's colleges in New Jersey during the period 1900-1970, this paper illustrates the complexity of developing a typology of Catholic women's colleges in the United States. The first Catholic women's college in New Jersey, College of Saint Elizabeth was established in 1899 by the Sisters of Charity; followed by Mount St. Mary's, later known as Georgian Court College, in 1908; Caldwell College in 1939; and Felician, originally a junior college, in 1967. Earlier typologies of Catholic women's colleges have divided them into elite liberal arts institutions and local, vocationally-oriented colleges which served the working and lower-middle-class daughters of immigrants. Using college catalogs and yearbooks from the four New Jersey colleges, this study compiles data on curriculum, the education of faculty, college costs, and student origins, and compares it to similar data from two elite colleges, Trinity in Washington, D.C. and Manhattanville in Purchase, New York. In spite of some pressure to offer vocational courses and the challenge of giving women religious faculty members the opportunity to pursue doctoral degrees, during this period New Jersey's Catholic women's colleges provided a Catholic liberal arts education for white middle-class women not unlike that offered at better known and more prestigious colleges. Only after 1970 did social and demographic changes begin to have an impact on the curriculum and student population of this sector of Catholic higher education.Peer reviewe
Gone and Forgotten? New Jersey's Catholic Junior Colleges
No full textIn the late 1960s, New Jersey had eleven seemingly-thriving Catholic junior colleges; by the mid-1970s, all but one of these colleges had closed. This article analyzes why these institutions appeared and disappeared so quickly, and explores what contribution they made to Catholic higher education. While private junior colleges declined throughout the U.S. during this period, in some respects the situation of New Jersey was unique. Research suggests that the greatest contribution these short-lived institutions made was to the education of women religious.Peer reviewe
Vanished Worlds: Searching for the Records of Closed Catholic Women’s Colleges
No full textThis article presents the results of a survey of the archives of 36 Roman Catholic women's colleges that have closed or merged with other institutions since 1967. The majority of these archives are held by the women's religious communities that originally sponsored the colleges, although about one third are held by universities. These archives are rich resources on the history of women, education, religion, and culture that to some degree have been neglected by scholars who have focused on the history of colleges that are still open. As well as suggesting avenues for future research, this article contributes to the literature on how archives can cope with the voluminous records of twentieth-century institutions, and to emerging scholarship on the relationship of archives and memory. The survey upon which it is based revealed certain limitations on preservation, access, and use of these archives, so the article concludes with recommendations on how to make them more visible.Peer reviewe
Women Academics in England, 1870-1930
No full textBased on the author's dissertation, this article traces the development of the academic profession for women in England in the late 19th and early 20th centuries, focusing on women at Oxford, Cambridge and London universities. Unlike in the United States, where women's role in higher education expanded and then retracted during this period, British women slowly and steadily made inroads into this male-dominated profession.Peer reviewe
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