Results 41 to 50 of about 84,030 (303)

Palyno-Morphological Characteristics as a Systematic Approach in the Identification of Halophytic Poaceae Species from a Saline Environment

open access: yesPlants, 2022
Pollen morphology of 12 salt-tolerant grasses (Calamagrostis pseudophragmites, Cenchrus biflorus, Cenchrus ciliaris, Cenchrus pennisetiformis, Cymbopogon jwarancusa, Dactyloctenium aegyptium, Echinochloa colona, Echinochloa crus-galli, Saccharum ...
Moona Nazish, Ashwaq T. Althobaiti
doaj   +1 more source

Pollen morphology of the alangiaceae [PDF]

open access: yesReview of Palaeobotany and Palynology, 1970
This paper presents a pollen-morphological study of Alangium, a genus mainly restricted to the tropics of the Old World, of which 18 of the 19 known species were studied. The pollen grains, studied with the use of a light microscope, a transmission electron microscope and a scanning electron microscope, were classified into 15 pollen types, to which a ...
openaire   +2 more sources

Microstructure of Croatian Wild Grapevine (Vitis vinifera subsp. sylvestris Gmel Hegi) Pollen Grains Revealed by Scanning Electron Microscopy

open access: yesPlants, 2022
Wild grapevine (Vitis vinifera subsp. sylvestris Gmel Hegi) is dioecious with male and female plants, whereas domesticated grapevine is mostly hermaphrodite with self-fertile hermaphrodite flowers.
Katarina Lukšić   +6 more
doaj   +1 more source

Multifunctional Bracts in the Dove Tree Davidia involucrata (Nyssaceae:Cornales) [PDF]

open access: yes, 2008
Although there has been much experimental work on floral traits that are under selection from mutualists and antagonists, selection by abiotic environmental factors on flowers has been largely ignored.
Gong, Yan-Bing   +3 more
core   +1 more source

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

open access: yesAdvanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou   +4 more
wiley   +1 more source

Evaluation of Pollination Potential in ‘Jinfeng’ Kiwifruit Seedling Male Plants Based on Floral Traits and Pollen Viability

open access: yesHorticulturae
This study systematically assessed floral phenotypic traits, pollen viability, and ultrastructure in 120 male progeny of Actinidia chinensis ‘Jinfeng’.
Yanyan Chen   +7 more
doaj   +1 more source

Morphological analysis of pollen grains in Machaerium species from São Paulo, Brazil [PDF]

open access: yesActa Botânica Brasílica
Pollen morphology serves as a valuable tool for taxonomic characterization and evolutionary studies. In this study, we conducted a detailed morphological analysis of pollen grains from 16 species of Machaerium Pers.
Vitória Húngaro Bocutti Gusman   +5 more
doaj   +1 more source

The True Identity of the “Second Pollen Morphology” of Camellia oleifera—Stomium Cells

open access: yesHorticulturae, 2022
Previous studies on Camellia oleifera pollen morphology have indicated dual morphologies, defined as “dimorphism”. However, they were limited to morphological studies at the end of final development and did not elucidate the origin, structure, and ...
Yang Hu, Chao Gao
doaj   +1 more source

Angiosperm pollen grains from the Cuayuca Formation (Late Eocene to Early Oligocene), Puebla, Mexico [PDF]

open access: yes, 2015
Systematic descriptions and illustrations of the best preserved angiosperm pollen grains (Monocotyledonae or Liliopsida: n= 7 and Dicotyledonae or Magnoliopsida: n= 41) recovered from Cuayuca Formation (late Eocene-early Oligocene), Puebla State ...
Martínez Hernández, Enrique   +2 more
core   +1 more source

Structural and Functional Characterization of EXPO‐Derived Extracellular Vesicles in Plants

open access: yesAdvanced Science, EarlyView.
In this study, 3D electron tomography (ET), cryo‐ET, and immunogold transmission electron microscopy (TEM) are employed to characterize plant extracellular vesicles (EVs) under physiological conditions. EVs are classified into three distinct categories according to their size, content, and molecular‐marker profiles. Furthermore, Exo70E2‐positive medium
Jiayang Gao   +12 more
wiley   +1 more source

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