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Agronomic study of two annual helianthus species naturalized in Argentina as potential sunflower crop genetic resource
(Universitat de Lleida, España, 2008)The genus Helianthus (Asteraceae), native from North America comprises not only the cultivated sunflower H. annuus var. macrocarpus L., but also some invasive species. The wild H. annuus ssp. annuus (common sunflower) and ... -
Can achene selection in sunflower crop–wild hybrids by pre-dispersal seed predators hasten the return to phenotypically wild sunflowers
(2016-04)Bird attack is a serious limitation to sunflower yield in several regions of the world, but it could also cause selection. The wild Helianthus annuus, naturalized in several regions of the world, hybridizes with the crop ... -
Crop-wild sunflower hybridization can mediate weediness throughout growth-stress tolerance trade-offs
(2017-11)Agricultural weeds are plants well-adapted to agricultural environments interfering directly and indirectly with crop production and causing important economic losses worldwide. Crop-wild hybridization is one of the main ... -
Evaluación de técnicas de aplicación de fitosanitarios para el control de chinche diminuta en girasol
(EEA Hilario Ascasubi, INTA, 2015-07)La chinche diminuta es una plaga emergente del girasol, que durante 2014/15 cobró elevada importancia en el valle bonaerense del Río Colorado. Con el propósito de brindar información al sector respecto de la efectividad ... -
Exoferality in sunflower (Helianthus annuus L.): a case study of intraspecific/interbiotype interference promoted by human activity
(2013)Helianthus annuus subsp. annuus, a biotype of the same species of the domesticated sunflower H. annuus var. macrocarpus, is an emergent noxious weed in several regions of the world. The frequent hybridization that occurs ... -
Gene flow in Argentinian sunflowers as revealed by genotyping‐by‐sequencing data
(2018-02)Gene flow can have several different applied consequences, ranging from extinction to the escape of transgenes to the evolution of weedy or invasive lineages. Here, we describe patterns of hybridization and gene flow ... -
Hybrid sunflower seed yield, composition and deterioration after chemical desiccation
(2017-04)The impact of chemical desiccation on yield showed contrasting results depending on seed moisture content at the time of application. Its effects on seed deterioration are still unknown and could be modified by seed ... -
Impacto de la “chinche diminuta” (Nysius sp.) sobre el cultivo de girasol del valle bonaerense del Río Colorado durante 2014/15
(EEA Hilario Ascasubi, INTA, 2015-07)Los cultivos de girasol fueron afectados por la denominada “chinche diminuta” que no era considerada plaga. El ataque ocurrió luego de un invierno con escaso número de heladas, lluvias por encima de la media y primavera ... -
Impacto de la “chinche diminuta” sobre el cultivo de girasol en 2014/15
(Departamento de Agronomía, Universidad Nacional del Sur, 2015-12)La aparición de plagas emergentes en los cultivos, probablemente propiciadas por factores ambientales, puede afectar severamente a la producción agrícola. Esta situación se observó en girasol a principio del verano de 2014 ... -
Orientaciones para un manejo estratégico de la chinche diminuta en cultivos de girasol para semilla del Valle Bonaerense del Río Colorado
(EEA Hilario Ascasubi, INTA, 2016-12)En el INTA Hilario Ascasubi, hacia finales de noviembre de 2016, se observó la presencia de chinche diminuta (Nysius simulans Stal.). Inicialmente se encontró que los insectos estaban ubicados sobre la superficie del suelo, ...