Listar Facultad de Ciencias Agrarias por autor "Espinoza, Francisco"
Mostrando ítems 1-14 de 14
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Generación de híbridos por cruzamientos interespecíficos en el grupo Plicatula del género Paspalum
Dellamea, Cinthia Vanina (Universidad Nacional del Nordeste. Secretaría General de Ciencia y Técnica, 2023-06-15)El grupo Plicatula pertenece al género Paspalum y cuenta con unas 30 especies, la mayoría con potencial forrajero. Existen especies con biotipos diploides, sexuales y autoincompatibles (2xS) y biotipos tetraploides, ... -
Genetic response of Paspalum plicatulum to genome duplication
Weihmüller, Emilse; Beltrán, Celina; Sartor, María Esperanza; Espinoza, Francisco; Spampinato, Claudia; Pessino, Silvina Claudia (Springer International Publishing, 2014-05-25)Paspalum plicatulum is a perennial rhizomatous grass with natural diploid and polyploid cytotypes. In this study, we investigated the occurrence of sequence polymorphisms arising immediately after genome autoduplication ... -
Genetic transfer from several apomictic tetraploid paspalum species to an elite group of sexual plants
Novo, Patricia Elda; Acuña, Carlos Alberto; Urbani, Mario Hugo; Galdeano, Florencia; Espinoza, Francisco; Quarin, Camilo Luis (Crop Science Society of America, 2020)Basic findings from classical genetic studies are available for exploiting apomixis in the breeding of several forage grass genera. Most Paspalum species are multi- ploid with a sexual diploid cytotype and conspecific ... -
Genética y localización del locus de la apomixis en especies del grupo Plicatula de Paspalum L. reveladas por técnicas moleculares
Aguilera, Patricia Mabel (Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias, 2013)Apomixis is a mode of asexual reproduction through seeds that originate progeny that is genetically identical to the mother plant. It is significant in the subfamily Panicoideae and genera Paspalum and its importance is ... -
Harnessing apomictic reproduction in grasses : what we have learned from paspalum
Ortíz, Juan Pablo Amelio; Quarin, Camilo Luis; Pessino, Silvina Claudia; Acuña, Carlos Alberto; Martínez, Eric Javier; Espinoza, Francisco; Hojsgaard, Diego Hernán; Sartor, María Esperanza; Cáceres, María Emilia; Pupilli, Fulvio (Oxford University Press, 2013-09)Background: Apomixis is an alternative route of plant reproduction that produces individuals genetically identical to the mother plant through seeds. Apomixis is desirable in agriculture, because it guarantees the perpetuation ... -
Hybridity and autopolyploidy increase the expressivity of apospory in diploid paspalum rufum
Delgado, Luciana; Sartor, María Esperanza; Espinoza, Francisco; Soliman, Mariano; Galdeano, Florencia; Ortíz, Juan Pablo Amelio (Springer Wien, 2016)Paspalum rufum Nees is a perennial grass that forms a multiploid complex. Natural populations are composed mainly of diploid (2n = 2x = 20) and tetraploid (2n = 4x = 40) cytotypes. The diploid form is sexual and highly ... -
Hybridization and heterosis in the plicatula group of paspalum
Novo, Patricia Elda; Acuña, Carlos Alberto; Quarin, Camilo Luis; Urbani, Mario Hugo; Marcón, Florencia; Espinoza, Francisco (Springer, 2017)Most forage cultivars released for thegenus Paspalum belong to a section named Plicatula.The species of Plicatula are mostly apomictic andconsequently the genetic diversity is locked for theirgeneticimprovement. The ... -
Inheritance of aposporous apomixis in interspecific hybrids derived from sexual paspalum plicatulum and apomictic paspalum guenoarum
Aguilera, Patricia Mabel; Galdeano, Florencia; Quarin, Camilo Luis; Ortíz, Juan Pablo Amelio; Espinoza, Francisco (Crop Science Society of America, 2015)Apomictic Paspalum plicatulum Michx. and P.guenoarum Arechav. are promising candidates for forage grass development in tropical regions. From a plant breeding perspective, apomixis provides a unique mechanism for developing ... -
Interspecific hybrids between Paspalum plicatulum and P. oteroi: a key tool for forage breeding
Novo, Patricia Elda; Montenegro Valls, José Francisco; Galdeano, Florencia; Honfi, Ana Isabel; Espinoza, Francisco; Quarin, Camilo Luis (Universidade de São Paulo, 2016-08)Grama-tio-pedro (Paspalum oteroi Swallen) is a rare stoloniferous grass of the Plicatula group of Paspalum, well adapted to continuous grazing in areas subject to seasonal flooding in the Pantanal region, in central western ... -
Obtención de poliploide de reproducción sexual en el grupo plicatula
Carrizo, Julio Martín; Novo, Patricia Elda; Wagner, Alberto Werfil; Espinoza, Francisco (Universidade Federal de São Carlos, 2019)Paspalum chaseanum es una gramínea que pertenece al grupo Plicatula del género Paspalum, es originaria de América del Sur y se caracteriza por presentar citotipos diploides sexuales (2xS) y autoincompatibles, y citotipos ... -
Relative DNA content in diploid, polyploid, and multiploid species of Paspalum (Poaceae) with relation to reproductive mode and taxonomy
Galdeano, Florencia; Urbani, Mario Hugo; Sartor, María Esperanza; Honfi, Ana Isabel; Espinoza, Francisco; Quarin, Camilo Luis (Springer, 2016-03-10)It is generally accepted that polyploids have downsized basic genomes rather than additive values with respect to their related diploids. Changes in genome size have been reported in correlation with several biological ... -
Los sistemas genéticos en poblaciones de complejos agámicos del género Paspalum
Sartor, María Esperanza (Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias, 2011-03-22)Paspalum es uno de los géneros de gramíneas que cuenta con un gran número de especies distribuidas naturalmente en las regiones cálidas del continente americano. El género se caracteriza por presentar especies diploides de ... -
Transference of eheat expressed sequence tag-simple sequence repeats to paspalum species and cross-species amplification of paspalum notatum simple sequence repeats : potential use in phylogenetic analysis and mapping
Siena, Lorena Adelina; Sartor, María Esperanza; Quarin, Camilo Luis; Espinoza, Francisco; Ortíz, Juan Pablo Amelio (Crop Science Society of America, 2014-11-12)The genus Paspalum L. includes numerous species of agronomic importance. The objectives of this work were to evaluate the transferability and polymorphism of publicly available wheat (Triticum aestivum L.) expressed sequence ... -
Transferencia génica desde especies tetraploides apomícticas hacia híbridos tetraploides sexuales de origen experimental en el grupo Plicatula de Paspalum
Novo, Patricia Elda (Universidad Nacional del Nordeste. Facultad de Ciencias Agrarias, 2016-03-22)Paspalum pertenece a la familia Poaceae, subfamilia Panicoideae, tribu Paspaleae, subtribu Paspalinae. Comprende aproximadamente 400 especies casi exclusivamente de origen americano. Este género presenta una gran diversidad ...