Results 21 to 30 of about 720,445 (294)

Segmenting 20 Types of Pollen Grains for the Cretan Pollen Dataset v1 (CPD-1)

Applied Sciences, 2021
Pollen analysis and the classification of several pollen species is an important task in melissopalynology. The development of machine learning or deep learning based classification models depends on available datasets of pollen grains from various plant
Nikos Tsiknakis, Elisavet Savvidaki, Sotiris Kafetzopoulos, Georgios Manikis, Nikolas Vidakis, Kostas Marias, Eleftherios Alissandrakis   +6 more
doaj   +1 more source

Disturbances in microsporogenesis and pollen grain development in Gagea lutea (L.) Ker. Gaw.

Acta Agrobotanica, 2012
The meiotic division of microsporocytes and pollen grain development in Gagea lutea (L.) Ker.-Gaw. (Liliaceae) with fluorescence microscope (excitation light 400 nm) was observed after squashing the anthers in DAPI solution (fluorochrom dying DNA). Up to
Ewa Szczuka, Jerzy Bohdanowicz, Joanna Świerczyńska, Jolanta Sobieska, Jacek Pietrusiewicz   +4 more
doaj   +1 more source

Toward in vitro fertilization in Brachiaria spp. [PDF]

, 2010
Brachiaria are forage grasses widely cultivated in tropical areas. In vitro pollination was applied to accessions of Brachiaria spp. by placing pollen of non-dehiscent anthers on a solid medium near isolated ovaries.
Willemse, M.T.M., Alves, E.R., Falcao, R., Carneiro, V.T.C., Dusi, D., do Valle, C.B., Valle, C.B., do   +6 more
core   +1 more source

Messenger RNas : their utilization and degradation during pollen germination and tube growth

Acta Societatis Botanicorum Poloniae, 2014
During pollen germination and tube growth at least 230 new proteins are synthesized, as determined by 35S-methionime labeling and two dimensional gel electrophoretic analysis of the labeled proteins.
Joseph P. Mascarenhas, Joann Mermelstein
doaj   +1 more source

The ultrastructure of pollen grain surface in allotetraploid petunia (Petunia hybrida hort. superbissima) as revealed by scanning electron microscopy

Acta Societatis Botanicorum Poloniae, 2015
The ultrastructure of pollen grain surface in allotetraploid petunias was analyzed by scanning electron microscopy. The pollen grain wall is developed into characteristic pattern of convulations.
S. Muszyński, J. Kocoń, W. Guzowski, M. Bieguński   +3 more
doaj   +1 more source

Effective long-distance pollen dispersal in Centaurea jacea [PDF]

, 2009
BACKGROUND: Agri-environment schemes play an increasingly important role for the conservation of rare plants in intensively managed agricultural landscapes.
Albrecht, M., Obrist, M K, Schmid, B; https://orcid.org/, David Kleijn, Kleijn, D., Albrecht, M, Duelli, P., Matthias Albrecht, Kleijn, D, Müller, C., Peter Duelli, Martin K Obrist, Obrist, M.K., Schmid, B., Duelli, P, Bernhard Schmid   +15 more
core   +2 more sources

Downregulation of OsAGO17 by artificial microRNA causes pollen abortion resulting in the reduction of grain yield in rice

Electronic Journal of Biotechnology, 2018
Background: Pollen development is an important reproductive process that directly affects pollen fertility and grain yield in rice. Argonaute (AGO) proteins, the core effectors of RNA-mediated silencing, play important roles in regulating plant growth ...
Min Yao, Tao-Bo Ai, Qiang Mao, Fang Chen, Fo-Sheng Li, Lin Tang   +5 more
doaj   +1 more source

Pollen characterisation of Maltese honey [PDF]

, 2013
In 2004 and 2005, pollen characterisation of 35 samples of honey collected from the islands of Malta and Gozo, was carried out with the aim to identify the botanical origin of honey produced on these islands.
Mifsud, David, Lanfranco, Edward, Gambin, Claudette   +2 more
core   +1 more source

Male gametophytic generation and a possible approach for selective pollination in carnation (Dianthus) breeding program

Plant, Soil and Environment, 2002
Present study focuses on making best possible use of male gametophytic generation in carnation breeding program. Exploration of pollen population revealed the existence of variability in terms of pollen morphology and histochemical content among as well ...
Tejaswini
doaj   +1 more source

Fungitoxicity in pollen grains [PDF]

Grana, 1983
Abstract While screening 45 samples of pollen suspension for their antifungal activity against Helminthosporium oryzae and Alternaria alternata, only that of Lycopersicon lycopersicum exhibited absolute toxicity against both the pathogens. The maximum inhibitory dilutions were found to be 1: 200 and 1: 500 (w/v) against A. alternata and H.
D. K. Pandey, R. N. Tripathi, R. D. Tripathi, S. N. Dixit   +3 more
openaire   +1 more source