https://socictopen.socict.org/files/original/cba17e23df4e3f6fdcf3b4ab134761f9.pdf e96eb1276948d69024ccb8e836c29f7c Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Agricultura sostenible Description An account of the resource Dominio científico: Agricultura sostenible Text A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Crescimento diferencial de biótipos de Conyza SPP. resistente e suscetível ao herbicida glifosato Differential growth of glyphosate-resistant and susceptible biotypes of Conyza SPP Creator An entity primarily responsible for making the resource Murilo Sala Moreira, Marcel Sereguin Cabral de Melo, Saul Jorge Pinto de Carvalho, Pedro Jacob Christoffoleti Description An account of the resource Este trabalho foi realizado com o objetivo de comparar, em condição controlada e não-competitiva, o crescimento de biótipos de Conyza canadensis e C. bonariensis resistente e suscetível ao herbicida glifosato, a fim de quantificar os efeitos da pressão de seleção para resistência nos biótipos. Dois experimentos foram desenvolvidos com tratamentos organizados em esquema fatorial 9 x 2, com nove avaliações periódicas de crescimento e dois biótipos de cada espécie. As variáveis avaliadas por planta foram: área foliar; massa seca da parte aérea, das raízes e total, obtendo-se, a partir desta última, a taxa de crescimento absoluto. O biótipo de C. canadensis resistente ao glifosato possui crescimento mais lento, menor acúmulo de área foliar e de massa seca que o biótipo suscetível. Menores áreas foliar e massa seca também foram registradas para o biótipo de C. bonariensis resistente ao glifosato quando comparado ao suscetível, porém com diferenças mais sutis que aquelas constatadas para C. canadensis. O crescimento absoluto do biótipo suscetível foi superior ao do resistente em ambas as espécies. A pressão de seleção para resistência ao glifosato teve impactos negativos na habilidade de crescimento dos biótipos.This work was carried out with the objective of comparing, under controlled and non-competitive condition, the growth of glyphosate-resistant and susceptible biotypes of Conyza canadensis and C. bonariensis; to quantify the effects of resistance selection pressure on the biotypes. Two trials were developed with treatments organized according to a factorial scheme 9 x 2, where nine were periodical growth evaluations and two were biotypes of each species. The variables evaluated per plant were: leaf area and dry mass (shoot, root and total); to determine absolute growth rate from the total dry mass. The glyphosate-resistant biotype of C. canadensis exhibits slower growth and smaller accumulation of leaf area and dry mass than the susceptible biotype. Lower leaf area and dry mass were also registered for the glyphosate-resistant biotype of C. bonariensis when compared to the susceptible one, however with more subtle differences than those identified for C. canadensis. Absolute growth rate of susceptible biotype was superior to that of resistant ones for both species. The pressure of selection to glyphosate resistance had negative impacts on the biotype growth. Date A point or period of time associated with an event in the lifecycle of the resource 2010 Subject The topic of the resource Development, buva, desenvolvimento, ecology, ecología, horseweed, populations, populações, resistance, resistencia Identifier An unambiguous reference to the resource within a given context 10.1590/S0006-87052010000300010 Source A related resource from which the described resource is derived Bragantia Publisher An entity responsible for making the resource available Instituto Agronômico de Campinas Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Agriculture (General) Relation A related resource <a href="http://www.scielo.br/scielo.php?script=sci_arttext&amp;pid=S0006-87052010000300010" target="_blank" rel="noreferrer noopener">http://www.scielo.br/scielo.php?script=sci_arttext&amp;pid=S0006-87052010000300010</a>