Results 31 to 40 of about 68,403 (207)

Spatially Aware Dictionary Learning and Coding for Fossil Pollen Identification

, 2016
We propose a robust approach for performing automatic species-level recognition of fossil pollen grains in microscopy images that exploits both global shape and local texture characteristics in a patch-based matching methodology.
Fowlkes, Charless, Kong, Shu, Punyasena, Surangi   +2 more
core   +1 more source

Dynamics of male meiotic recombination frequency during plant development using Fluorescent Tagged Lines in Arabidopsis thaliana [PDF]

, 2017
Meiotic homologous recombination plays a central role in creating genetic variability, making it an essential biological process relevant to evolution and crop breeding.
De Storme, Nico, Geelen, Danny, Li, Fan
core   +1 more source

In vitro germination and viability of pollen grain of coconut accessions1

Revista Ciência Agronômica
Storage as a means of maintaining the pollen viability is important for the preservation of the genetic variability, facilitates the exchange of germplasm and greatly contributes to the generation of variability obtained from artificial crosses ...
Catrine Regina Feitosa Moura, Caroline de Araújo Machado, Ana da Silva Lédo   +2 more
doaj   +1 more source

QUANTITATIVE POLLEN ANALYSIS OF BEE HONEY AT CERTAIN APIARIES IN QALYUBIA GOVERNORATE AND AVAILABLE HONEY IN LOCAL MARKET, EGYPT [PDF]

Arab Universities Journal of Agricultural Sciences, 2018
A new proposal method for quantitative pollen analysis of pollen grains in each gram of bee honey was described, using aNeubauer improved chamber for leucocytes and erythrocytes counting. The study was conducted at the Bee Research Unit, Dept.
Mai Hassanien, M. El- Sherif, A. Salem, M. Ali   +3 more
doaj   +1 more source

Effects of Drought Stress on Pollen Sterility, Grain Yield, Abscisic Acid and Protective Enzymes in Two Winter Wheat Cultivars

Frontiers in Plant Science, 2017
Drought stress induced pollen sterility is a detrimental factor reducing grain number in wheat. Exploring the mechanisms underlying pollen fertility under drought conditions could assist breeding high-yielding wheat cultivars with stress tolerance. Here,
Baodi Dong, Xin Zheng, Haipei Liu, Jason A. Able, Hong Yang, Huan Zhao, Mingming Zhang, Yunzhou Qiao, Yakai Wang, Mengyu Liu   +9 more
doaj   +1 more source

Verhuellia is a segregate lineage in Piperaceae: more evidence from flower, fruit and pollen morphology, anatomy and development [PDF]

, 2010
Background and Aims The perianthless Piperales, i.e. Saururaceae and Piperaceae, have simple reduced flowers strikingly different from the other families of the order (e.g. Aristolochiaceae).
Samain, Marie-Stéphanie, Vrijdaghs, Alexander, Hesse, Michael, Goetghebeur, Paul, Jiménez Rodríguez, Francisco, Stoll, Alexandra, Neinhuis, Christoph, Wanke, Stefan   +7 more
core   +2 more sources

Pollen morphology of Plantago species native to Poland and their taxonomic implications

Acta Societatis Botanicorum Poloniae, 2011
Pollen grains of 9 species of the genus Plantago (Plantaginaceae), including 8 taxa native to Poland, were observed under a light microscope and a scanning electron microscope. Descriptions of grain sculpture are illustrated only SEM micrographs.
Małgorzata Klimko, Krystyna Idzikowska, Mariola Truchan, Anna Kreft   +3 more
doaj   +1 more source

Comparative performance of airyscan and structured illumination superresolution microscopy in the study of the surface texture and 3D shape of pollen

, 2018
The visualization of taxonomically diagnostic features of individual pollen grains can be a challenge for many ecologically and phylogenetically important pollen types.
Allen, Andersen, Anderson, Chaturvedi, Dan, Faegri, Gustafsson, Gustafsson, Habuchi, Han, Heintzmann, Hesse, Holt, Huang, Jost, Kasuboski, Leung, Long, Lukosz, Mander, Mander, Mander, Muller, Nelson, Page, Peltre, Punt, Punyasena, Reimer, Sheppard, Sivaguru, Sivaguru, Sun, Tcheng, Traverse, Urban, Urban, Urban, Weiss   +38 more
core   +1 more source

What Brown saw and you can too [PDF]

, 2010
A discussion is given of Robert Brown's original observations of particles ejected by pollen of the plant \textit{Clarkia pulchella} undergoing what is now called Brownian motion.
Brian Collett, Brown R., Brown R., Brown R., Dara Newman, David Bilderback, Douglas D., Ford B. J., Ford B. J., Ford B. J., Ford B. J., Ford B. J., Heslop-Harrison J., Heslop-Harrison Y., Kenneth Bart, Kirsten U., Mabberley D. J., Philip Pearle, Ramsbottom J., Scott Samuels, van der Pas P. W.   +20 more
core   +3 more sources

Pollen grain bioassay for environmental contamination biomonitoring

Acta Biologica Slovenica, 2004
Pollen grain bioassay near some highways was performed in 45 plant species for identification of environmental genotoxic impact on naturally growing plants due to environmental traffic contaminants. A relationship between the duration of heavy traffic on
Jasna Paradiž, Milan Lovka
doaj   +1 more source