A5000866326- Plant Diversity and Evolution
- Plant and animal studies
- Fern and Epiphyte Biology
- Botanical Research and Applications
- Plant Taxonomy and Phylogenetics
- Chromosomal and Genetic Variations
- Plant and Fungal Species Descriptions
- Plant Parasitism and Resistance
- Botany, Ecology, and Taxonomy Studies
- Plant Reproductive Biology
- Plant tissue culture and regeneration
- Banana Cultivation and Research
- Seed and Plant Biochemistry
- Phytochemistry Medicinal Plant Applications
- Botany and Geology in Latin America and Caribbean
- Botanical Research and Chemistry
- Ecology and Vegetation Dynamics Studies
- Plant and soil sciences
- Plant Toxicity and Pharmacological Properties
- Lichen and fungal ecology
- Plant Virus Research Studies
- Phytochemistry and Biological Activities
- Plant biochemistry and biosynthesis
- Growth and nutrition in plants
- Mediterranean and Iberian flora and fauna
National University of the Northeast
2012-2025
Centro Científico Tecnológico - Nordeste
2015-2024
Instituto de Botânica
2009-2024
Consejo Nacional de Investigaciones Científicas y Técnicas
2009-2021
Centro Científico Tecnológico - San Juan
2019
Centro Científico Tecnológico - Tucumán
2006-2018
Apis Flora (Brazil)
2018
Universidade Federal Rural do Rio de Janeiro
2007
Abstract The current study examines all genera of Sapindaceae tribe Paullinieae sensu Acevedo-Rodriguez et al. (2011). Based on molecular phylogenetic analyses trnL intron and ITS sequence data along with critical evaluation morphology, supertribe Paulliniodae is newly recognized morphologically characterized by zygomorphic flowers, thyrses lateral cincinni, corollas 4 petals, alternate leaves a well-developed distal leaflet. contains four successively nested subclades designated as tribes...
Studies focusing on terminal drought combined with heat impacts plants of agronomic value remain scarce, and even less under field conditions. The objective this study was to investigate leaf structural ultrastructural changes induced by stress (HS) (DS) during seed filling their relationship physiological variables yield determination. Two soybean cultivars were grown in During four treatments applied, including a control (without manipulation, at ambient temperature capacity), HS (episodes...
Abstract Background and Aims The supertribe Paulliniodae includes Athyaneae, Bridgesieae, Thouinieae, Paullinieae tribes. Molecular phylogeny chromosomal diversity are relatively known, some doubts persist about chromosome evolution processes the taxonomic position of a group Cardiospermum Urvillea species weakly associated with Serjania. Methods We analysed molecular diversification time group, including unpublished DNA sequences ITS, trnL intron trnL–trnF for 26 species. A total 87 were...
Cytological studies of 15 species, 2 varieties and 1 fOfIB Sapindaceae from Sudamerica are presented. All them but Paullinia pinnata new counts. Three genera: Cupania (X=16), Houssayanthus (b12) y UroiUea (b11) reported for the first time.
Abstract C ardiospermum L . belongs to the P aullinieae tribe ( S apindaceae) and comprises 16 species. Of these, 12 species are present in outh A merica all occur B razil. shows most variable chromosome number of tribe. Phylogenetic relationships within genus , especially with other tribe, poorly understood. This research focuses on characterisation karyotypic features using conventional cytogenetic methods, CMA / DAPI banding fluorescence situ hybridisation FISH ). To elucidate phylogeny...
Un estudio detallado sobre la morfología del polen en treinta y una especie de tribu Paullinieae, que comprende siete géneros, se ha llevado a cabo por LM SEM.Fueron examinados los granos las siguientes especies: subtribu Paulliniinae (Cardiospermum L., 4 spp, Houssayanthus Hunz, 2 Lophostigma Radlk, 1 sp, Paullinia 3 Serjania Miller, 16 spp., Urvillea Kunth, spp);. Thinouiinae (Thinouia Triana & Planchon, sp). Todas ellas crecen Argentina, salvo L.plumosum Radlk. H.monogynus (Schdl.)...
, 1995;Ferrucci and Solis Neffa, 1997; Neffa Ferrucci,1997, 1998; Lombello Forni-Martins, 1998), chro-mosome numbers of 127 species have been reported andthe complete karyotypes 35 are known, althoughonly a few papers give information on interphase nucleusstructure, chromosome condensing behavior, Giemsa C-banding, NOR-banding nucleolus counts (Eichhorn andFranquet, 1936; Guervin, 1961; Hemmer Morawetz,1990; Nogueira
The morphology, anatomy and ontogeny the floral nectaries of two species Sapindaceae (Paullinieae), viz. Cardiospermum grandiflorum Urvillea chacoensis, were studied using light scanning electron microscopy. Both are monoecious with oblique monosymmetric flowers. located at base androgynophore. Vascular tissue supplying consists phloem. has a posterior nectary lobes without any specially differentiated tissue, nectarostomata. In chacoensis four lobes; ones distinctive nectariferous...
Microsporogenesis and microgametogenesis of two species, Cardiospermum grandiflorum Sw. Urvillea chacoensis Hunz. (Sapindaceae, Paullinieae), were studied using light transmission electron microscopy. Both species are monoecious, with staminate hermaphrodite, although functionally pistillate, flowers. A comparative pollen-development study these floral morphs is reported. For the present study, five stages pollen ontogeny identified. The development anther wall basic type. Its consists...
Cardiospermum bahianum , a new species from Bahia, Brazil, is described, illustrated, and compared to its putative closest relatives C. anomalum cuchujaquense .The endemic the caatinga vegetation.In addition, micromorphological characters of leaf epidermis, seed coat, pollen grains are described.A somatic chromosome number 2 n = 36 reported.Detailed light scanning electron microscope photographs main presented.The belongs section Carphospermum .It distinguished similar by conspicuous...
Abstract In flowers of Nymphaea and Victoria, carpellary appendages are regarded as structures related to pollination by deceit night-blooming species. this study, the anatomy, histochemistry ultrastructure were analysed investigate their possible role in production volatile compounds nocturnal species amazonum, N. gardneriana, prolifera (Nymphaea subgenus Hydrocallis) Victoria cruziana, diurnal caerulea Brachyceras). Carpellary studied using light microscopy scanning transmission electron...
Magonia pubescens A.St.-Hil. (Dodonaeaeae, Sapindaceae) is a monoecious species exhibiting two floral morphs, namely staminate flowers, with gynoecium reduced to pistillode, and morphologically hermaphrodite but functionally pistillate flowers. It presents the basic type of antheral wall development. Microsporogenesis normal, forming tetrahedral decussate tetrads. Anatomical differences in anthers between morphs become visible at stage callose degradation release In endothecium develops...