Artículos de revista: Envíos recientes
Mostrando ítems 241-260 de 541
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Effect of morphological heterogeneity of somatic embryos of melia azedarach on conversion into plants
(Sociedad Latinoamericana de Microscopia Electrónica, 2010-01-16)Embryogenic cultures were initiated from immature Melia azedarach (Meliaceae) zigotic embryos. Explants were induced on Murashige and Skoog (1962) medium with 4.54 μM thidiazuron or 0.45 μM dichlorophenoxyacetic acid. ... -
Organogenesis and plant regeneration of arachis villosa benth. (leguminosae) through leaf culture
(Sociedad Latinoamericana de Microscopia Electrónica, 2009-11-02)With the aim of developing an efficient plant regeneration protocol, leaflet explants of three accessions of Arachis villosa Benth. (S2866, S2867 and L97) were cultured on basic Murashige and Skoog medium supplemented ... -
A cryopreservation protocol for immature zygotic embryos of species of Ilex (aquifoliaceae)
(Sociedad Latinoamericana de Microscopia Electrónica, 2008-04)Tropical Ilex species have recalcitrant seeds. This work describes experiments demonstrating the feasibility of long-term conservation of Ilex brasiliensis, I. brevicuspis, I. dumosa, I. intergerrima, I. paraguariensis, ... -
Evaluación morfoanatómica de hojas “D” de piña (ananas comosus (L.) merr. var. comosus) en respuesta a la implantación de dos sistemas de cultivo en Corrientes, Argentina
(Universidad Nacional de Colombia, 2015-09-08)Una posibilidad concreta para cultivar especies de origen tropical en el subtrópico es compensar el problema de las bajas temperaturas con la utilización de coberturas plásticas, las cuales modifican el ambiente y las ... -
Promoción de la huerta orgánica y de alimentación saludable en niños de la EEP Nº7 de Puerto Tirol, Chaco
(Universidad Nacional del Nordeste. Facultad de Ciencias Exactas y Naturales y Agrimensura, 2018-05-09)El modelo educativo que tienen actualmente los niños de nuestra región nordeste no desarrolla su capacidad para elegir alimentos saludables, así van adquiriendo hábitos de alimentación no saludables que mantendrán durante ... -
Phylogenetic relationships within turneraceae based on morphological characters with emphasis on seed micromorphology
(Springer Nature, 2015-03-31)Genera of Turneraceae differ notably in connation/adnation of calyx, corolla, and androecium. Floral and seed morphology were analyzed in all genera. Phylogenetic analyses were made using a matrix of 91 characters coded ... -
Embryogenesis, endospermogenesis and fruit development in lophophytum (balanophoraceae) : focus on endosperm and embryo initiation
(Elsevier, 2017-05-05)Studies on the development of the endosperm, embryo and fruit are scarce in Balanophoraceae, since a particular pattern for the family has not been established. Moreover, discrepancies between the reported cases are being ... -
Characterization and expression analysis of somatic embryogenesis receptor kinase (SERK) genes in sexual and apomictic paspalum notatum
(Plant Molecular Biology, 2014)The SOMATIC EMBRYOGENESIS RECEPTOR- LIKE KINASE (SERK) gene plays a fundamental role in somatic embryogenesis of angiosperms, and is associated with apomixis in Poa pratensis. The objective of this work was to ... -
Morfología y anatomía floral de schinopsis balansae (anacardiaceae)
(Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias, 2013)Se realizó el análisis morfo-anatómico de Schinopsis balansae Engl. con microscopía óptica y electrónica de barrido a fin de obtener datos de las flores de esta especie, definida como polígamo-dioica. Los resultados ... -
Microsporogénesis de tres especies del subgénero passiflora (passiflora, passifloraceae) de Paraguay
(Instituto de Botánica Darwinion, 2016)El presente trabajo tuvo por objeto caracterizar cariológicamente las especies del género Passiflora L., subgénero Passiflora, del Distrito Félix Pérez Cardozo, Guairá, Paraguay. Por primera vez, se da a conocer el número ... -
Floral development and anatomy of pistillate flowers of Lophophytum (Balanophoraceae), with special reference to the embryo sac inversion
(Elsevier, 2016-03)The extreme reduction of flowers in the Balanophoraceae has generated few and incomplete studies with scattered and often contradictory results with respect to embryology. Using light and scanning microscopy, gynoecium, ... -
Hybridization and heterosis in the plicatula group of paspalum
(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 ... -
Hybridity and autopolyploidy increase the expressivity of apospory in diploid paspalum rufum
(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 ... -
Circumscription of the south American moonwort botrychium (ophioglossaceae)
(Taylor & Francis, 2017)The genus Botrychium (Ophioglossaceae) is comprised of about 30 widely distributed species. Because of their small size and few, yet variable, morphological characters, many questionable taxa have been described over the ... -
Floral structure, development of the gynoecium, and embryology in schinopsis balansae engler (anacardiaceae) with particular reference to aporogamy
(University Of Chicago Press, 2016-04)Premise of research. Most studies of Anacardiaceae embryology have focused on seed and fruit development in different genera. None of them, however, included species of Schinopsis. Considering the absence of embryological ... -
Domacios y anatomía foliar de jasminum cultivados
(Fundación Miguel Lillo, 2016-10-12)En la familia Oleaceae se ha descripto la presencia de domacios foliares en numerosas especies, sin embargo no se han analizado desde el punto de vista anatómico. Con este objetivo se evaluaron 11 especies, con ejemplares ... -
Floral nectaries in sapindaceae s.s. : morphological and structural diversity, and their systematic implications
(Springer, 2017)We investigated the morphology and structure of the floral nectary in 11 Neotropical genera belonging to the subfamilies Dodonaeoideae and Paullinioideae (Sapindaceae) from southern South America representing three tribes ... -
Presencia de mycena paranaensis para la micobiota Argentina y reconsideración de mycena leaiana (agaricales, mycenaceae)
(Instituto de Botánica Darwinion, 2015-07-31)Mycena paranaensis y M. leaiana son dos especies muy similares pertenecientes a la sección Cespitosae, que han sido confundidas por diversos autores. En el presente trabajo se esclarecen los límites específicos entre Mycena ... -
Serjania rzedowskiana (sapindaceae-paullinieae) : a new species from Michoacán, México
(American Society Of Plant Taxonomists, 2016-07)Serjania rzedowskiana (Sapindaceae-Paullinieae), a new species from the Zicuirán-Infiernillo Biosphere Reserve of Michoacán, Mexico, is described and illustrated. The novelty differs from its congeners by having fruits ... -
Heterosis and expressivity of apospory in tetraploid bahiagrass hybrids
(Crop Science Soc Amer, 2015)Breeding procedures developed for apomictic species are based on the idea of fixing superior hybrids by apomixis. However, scarce information is available about the occurrence of heterosis in apomictic hybrids. The objective ...
