Results 91 to 100 of about 720,445 (294)

Mercury cycling during the last glacial period in Arctic Lake El'gygytgyn, NE Russia

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Tectonic processes play a key role in the global mercury (Hg) cycle on geological timescales, by mobilising Hg from deep Earth reservoirs to the surface. These natural fluxes also introduce a dynamic component to the terrestrial Hg cycle that can interact with other environmental signals and influence Hg delivery to sedimentary records.
Alice R. Paine   +7 more
wiley   +1 more source

A MICROMORPHOLOGICAL STUDY OF SOME GENERA OF THE PAPILIONOIDEAE SUBFAMILY IN CENTRAL AND NORTHERN IRAQ [PDF]

open access: yesمجلة الأنبار للعلوم الزراعية
This research involved a micro-morphological pollen study on 23 wild plant species belonging to six genera of the Papilionoideae subfamily growing in the central and northern districts of Iraq.
A. H. Abdulmajeed, N. M. Muhammad
doaj   +1 more source

Carbon isotope geochemistry of organic matter in volcanic paleosols constrains paleo‐environmental variations

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT The Fiorano quarry paleosol developed within the Colli Albani volcanic district (Italy) in the time interval bracketed by the deposition of the Pozzolanelle pyroclastic‐flow unit (365 ± 4 ka) and the emplacement of the Capo di Bove lava flow (277 ± 2 ka).
Eduardo Di Marcantonio   +4 more
wiley   +1 more source

Structure et morphologie d'un grain de pollen. Troisième partie

open access: yes, 2021
Structure et morphologie d'un grain de pollen. Troisième partie. Abeilles et Compagnie. Mars-Avril 2021.
Gastaldi, Cristina   +2 more
core   +2 more sources

Effect of bio‐fertilization and edapho‐climatic conditions on chickpea nodulation, grain yields, and seed protein in a Mediterranean context: a meta‐analysis approach

open access: yesJournal of the Science of Food and Agriculture, EarlyView.
Abstract Chickpeas (Cicer arietinum L.) serve as a protein‐rich staple, particularly in Mediterranean countries, where they are often grown in marginal and water‐stressed areas. This meta‐analysis synthesized evidence from peer‐reviewed publications across Mediterranean countries to assess how chickpea rhizobial inoculation influences chickpea ...
Amira Hachana   +11 more
wiley   +1 more source

Floral and reproductive biology of Surinam cherry trees with pyrenic and apyrenic fruits [PDF]

open access: yesRevista Brasileira de Fruticultura
: Surinam cherry tree (Eugenia uniflora) is native to Brazil, but it is found in several subtropical countries of Latin America. Its fruit has different berries according to the maturation stage and variety.
Kelli Pirola   +5 more
doaj   +1 more source

Cytological and Molecular Mechanism of Low Pollen Grain Viability in a Germplasm Line of Double Lotus. [PDF]

open access: yesPlants (Basel), 2023
Liu G   +8 more
europepmc   +1 more source

Bee pollen as functional food and environmental bioindicator: current evidence and future challenges

open access: yesJournal of the Science of Food and Agriculture, EarlyView.
Abstract Bee pollen (BP), a plant‐derived product collected by honey bees, is increasingly promoted as a functional food due to its content of proteins, essential amino acids, lipids, vitamins, minerals, and bioactive compounds such as polyphenols and flavonoids.
Luigi Parrotta, Stefano Del Duca
wiley   +1 more source

Pollen tube incompatibility reaction on the stigma in selfpollinated Sinapis alba L.

open access: yesActa Societatis Botanicorum Poloniae, 2014
After selfpollination of Sinapis alba L. pollen tubes growth is inhibited on the stigma. The pollen grains germinate 3-4 hours after pollination. The pollen give rise to one or more pollen tubes. They grow along the papillae.
Renata Śnieżko, Krystyna Winiarczyk
doaj   +1 more source

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