Artículos de revista: Envíos recientes
Mostrando ítems 41-60 de 541
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In vitro cultured primary roots derived from stem segments of Cassava (Manihot esculenta) can behave like storage organs
(Oxford University Press, 2007-03-01)Background and Aims: Cassava ( Manihot esculenta ) has three adventitious root types: primary and secondary fibrous roots, and storage roots. Different adventitious root types can also regenerate from in vitro cultured ... -
Segregation for sexual seed production in Paspalum as directed by male gametes of apomictic triploid plants
(Oxford University Press, 2007-11-01)Background and Aims: Gametophytic apomixis is regularly associated with polyploidy. It has been hypothesized that apomixis is not present in diploid plants because of a pleiotropic lethal effect associated with monoploid ... -
Effect of pollination timing on the rate of apomictic reproduction revealed by RAPD Markers in Paspalum notatum
(Oxford University Press, 2002-02-01)Progeny tests employing molecular markers allow the identification of individuals originated by sexual means among the offspring of a facultative apomict. The objective of this work was to evaluate the effect of the ... -
Analysis of variation for apomictic reproduction in diploid Paspalum rufum
(Oxford University Press, 2014-04-16)Background and Aims: The diploid cytotype of Paspalum rufum (Poaceae) reproduces sexually and is self-sterile; however, recurrent autopolyploidization through 2n + n fertilization and the ability for reproduction via ... -
Relación genómica entre citotipos diploides de Paspalum simplex y P. procurrens (Poaceae, Paniceae)
(Instituto de Botánica Darwinion, 1998-09-25)Interspecific Crossing was conducted between diploid cytotypes of two Paspalum species o f the subgenus Anachyris in order to investígate their genomic relatíonship and to evalúate the possibilities of gene exchange between ... -
Reproductive systems in Paspalum : relevance for Germplasm collection and conservation, breeding techniques, and adoption of released cultivars
(Universidad de Padua, 2019)The objective of this review is to analyze and describe the impact that mode of reproduction in Paspalum has on germplasm conservation, genetic improvement, and commercialization of cultivars. Germplasm collection and ... -
A plant-specific TGS1 homolog influences gametophyte development in sexual tetraploid Paspalum notatum ovules
(Universidad de Carolina del Norte, 2019-11)Aposporous apomictic plants form clonal maternal seeds by inducing the emergence of non-reduced (2n) embryo sacs in the ovule nucellus and the development of embryos by parthenogenesis. In previous work, we reported a ... -
Lista de espécies de Sapindaceae para um remanescente de Floresta Estacional Semidecidual no sul do Brasil : Estação Ecológica do Caiuá
(Universidade Federal do Rio Grande do Sul, 2014-07)Com o objetivo de ampliar os conhecimentos sobre a flora do estado do Paraná e de suas áreas ripárias, foi realizado o inventário da família Sapindaceae para a Estação Ecológica do Caiuá, na margem esquerda do rio Paranapanema. ... -
Volvariella volvacea (Pluteaceae, Agaricales), presencia de un hongo con potencial biotecnológico en la Argentina
(Sociedad Argentina de Botánica, 2021)Background and aims: Volvariella volvacea is a tropical to subtropical species, known from Southeastern Asia, Europe and America with isolated records from Africa, and Oceania, but there is no previous record of this ... -
Floral nectary structure, nectar presentation and morpho-anatomical analysis of male-fertile and male-sterile anthers in onion (Allium cepa, Amaryllidaceae)
(Sociedad Argentina de Botánica, 2023)Background and aims: The onion (Allium cepa var. cepa) is an allogamous species in which male-sterile lines have been developed. However, the structure of the flower and floral nectaries have only been briefly described. ... -
Lectotipificación de Cephalanthus Peruvianus y C. Breviflorus (Rubiaceae)
(Instituto de Botánica Darwinion, 2019)As part of the review of the genus Cephalanthus for the Americas, we have found that names C. peruvianus and C. breviflorus need a properly lectotypification. For this reason, materials collected by Richard Spruce and ... -
Estudio socioeducativo de estudiantes de dos cohortes de la carrera de Ingeniería Agronómica de la Facultad de Ciencias Agrarias de la UNNE. Argentina. Corrientes
(Centro de Estudios e Investigación para el Desarrollo Docente, 2012-07)El objetivo de este estudio fue identificar y describir las características socio- educativas de los estudiantes y la relación con el desempeño académico en la carrera Ingeniería Agronómica. Para ello se caracterizó a ... -
Cryopreservation of Cyrtopodium hatschbachii Pabst (Orchidaceae) immature seeds by encapsulation-dehydration
(Tech Science Press, 2012)The aim of the present study was to investigate the efficiency of the encapsulation-dehydra- tion technique for cryopreservation of Cyrtopodium hastchbachii Pabst seeds. Immature seeds of this species were cryopreserved ... -
Physiological responses and post-stress recovery in field-grown maize exposed to high temperatures at flowering
(Southern Cross Publishing, 2019)Heat stress affects physiological traits and biomass production in major crops, including maize. We researched the responses of maximum efficiency of photosystem II (Fv/Fm), relative cell injury (RCI), stomatal conductance ... -
A comparative approach to understanding the ovule, seed, and fruit development in Bulbostylis (Cyperaceae : Cyperoideae : Abildgaardieae)
(Springer Verlag GmbH, 2022-01)In the present work, we study the ovule, seed, and fruit development in six Bulbostylis species in order to characterize the genus in a comparative approach and to identify the characteristics that can be used in taxonomy ... -
Androecium anatomy of Isertia laevis, a polysporangiate species of Rubiaceae
(Springer Verlag GmbH, 2021-05)In this study, we performed an anatomical analysis of the polysporangiate anthers and the development of pollen in Isertia laevis (Rubiaceae) with the aim to elucidate the internal structure of these atypical anthers. For ... -
Stem‐cutting anatomy and biochemical responses associated with competence for adventitious root diferentiation in Acca sellowiana (Myrtaceae)
(Universidad Técnica de Berlín, 2021-08)Successful development of adventitious roots (AR) in cuttings imposes an important limitation to the propaga- tion of woody plants and in some species, the ability to form AR is strongly afected by genotype. However, we ... -
Phytochemical composition and biological screening of two Lophophytum species
(Universidad de Santiago de Chile, 2021-11)Lophophytum species are holoparasites that grow on tree roots. The objectives of the work were to explore the chemical composition of the tubers of two Lophophytum species and to analyze the antioxidant, anti-inflammatory ... -
Influencia del grado de lignificación de los propágulos de jardín y minijardín clonal en el enraizamiento de estacas y miniestacas de Prosopis alba griseb
(Universidad Nacional del Litoral, 2021)Prosopis alba posee potencial para la producción forestal y forrajera, destacándose su utilización en zonas áridas y semi-áridas. La especie, considerada de difícil enraizamiento, se propaga comercialmente mediante semillas. ... -
Heterochromatin evolution in Arachis investigated through genome‑wide analysis of repetitive DNA
(Springer Nature, 2019-01-24)Main conclusion The most conspicuous diference among chromosomes and genomes in Arachis species, the patterns of heterochromatin, was mainly modeled by diferential amplifcation of diferent members of one superfamily of ...
