Results 31 to 40 of about 248,109 (208)

An Analysis of the Arabidopsis Pollen Transcriptome [PDF]

open access: yesPlant Physiology, 2007
In flowering plants, male gametogenesis occurs in the anthers. The division of a diploid sporogenic cell results in two cells with very different fates—the tapetal initial cell and the pollen mother cell.
openaire   +2 more sources

Can ploidy levels explain the variation of Herbertia lahue (Iridaceae)? [PDF]

open access: yesGenetics and Molecular Biology
Polyploidy is often related with phenotypic variation, as observed in Herbertia lahue, a geophyte species. This study examined the H. lahue polyploid series and departure in cytogenetic, morphometric, and pollen data.
Eudes Maria Stiehl-Alves   +5 more
doaj   +1 more source

Where Does Honey Bee (Apis mellifera L.) Pollen Come from? A Study of Pollen Collected from Colonies at Ornamental Plant Nurseries

open access: yesInsects, 2022
Ornamental nursery plants are both a major agricultural industry in the U.S. and a major feature of the urban and suburban landscape. Interest in their relationship with pollinators is two-fold: the extent to which they provide a nutritional benefit to ...
Kimberly A. Stoner   +4 more
doaj   +1 more source

Reconstruction of arboreal vegetation dynamics of the area of Museum-Reserve Kulikovo Pole in the middle and late Holocene

open access: yesNature Conservation Research: Заповедная наука, 2017
The paper presents reconstructions of vegetation and forest coverage dynamics in the area of the State Military-Historical and Natural Museum-Reserve «Kulikovo Pole» (Upper Don River basin) in the middle and late Holocene, based on modern and fossil ...
Elena Yu. Novenko
doaj   +1 more source

Late Holocene Environmental History and Norse Settlement in Outer Fjords from South Greenland: A Case Study at Lake Qallimiut

open access: yesGeosciences, 2023
To complement discussions about vegetation history and climate variations in south Greenland, especially during the Norse settlement, we developed a sedimentological multiproxy approach to study a 4300-year-old lacustrine core comprising pollen analysis,
Emilie Gauthier   +5 more
doaj   +1 more source

Automation of pollen analysis using a computer microscope : a thesis presented in partial fulfilment of the requirements for the degree of Master of Engineering in Computer Systems Engineering at Massey University [PDF]

open access: yes, 2004
The classification and counting of pollen is an important tool in the understanding of processes in agriculture, forestry, medicine and ecology. Current pollen analysis methods are manual, require expert operators, and are time consuming.
Holdaway, Craig Alexander
core  

Th17 responses are not altered by natural exposure to seasonal allergens in pollen-sensitive patients [PDF]

open access: yes, 2016
Background: Allergic rhinitis affects 10–30 % of the global population and this number is likely to increase in the forthcoming years. Moreover, it commonly co-exists with allergic asthma as a chronic allergic respiratory syndrome. While the involvement
Czesnikiewicz-Guzik, Marta   +10 more
core   +3 more sources

Application of Atmospheric Solids Analysis Probe Mass Spectrometry for the Taxonomic Analysis of Pollen

open access: yesFrontiers in Ecology and Evolution, 2021
Globally, both managed and wild pollination services are unable to meet current rates of crop production and pollination demand. Wild pollination services could be improved through the reforestation of agricultural land margins, however plant–pollinator ...
Adelina Latinovic   +3 more
doaj   +1 more source

The arabidopsis COX11 homolog is essential for cytochrome c oxidase activity [PDF]

open access: yes, 2015
Members of the ubiquitous COX11 (cytochrome c oxidase 11) protein family are involved in copper delivery to the COX complex. In this work, we characterize the Arabidopsis thaliana COX11 homolog (encoded by locus At1g02410).
Mansilla, Natanael   +3 more
core   +2 more sources

Paleoenvironment conditions of the bottom sediment formation in the small lake depressions on the Pomorsky coast of the White Sea

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
New lithological, palinological and chronological data obtained through the study of bottom sediments from four small lake depressions on the Pomor Coast, Onega Bay, White Sea are presented.
Vasili Kolka   +2 more
doaj   +1 more source

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