Results 81 to 90 of about 19,459 (297)
Pollen morphology and their viability of some Indian mangroves
Annals of Tropical Research, 2008 A study on pollen morphology of four common Indian mangroves from Sundarbans mangrove swamps, three species from the family Rhizophoraceae (Bruguiera sexangular Laur., Ceriops tagal Perr.
Suparna Gupta +3 more
doaj +1 more source
International Journal of Cancer, EarlyView.Associations between outdoor air pollution and cancers other than lung cancer remain unclear, particularly in the context of tobacco use. Here, the authors assessed possible links between ambient air pollutant exposure and incidence of 20 non‐lung cancers among adults followed over a 25‐year period in the United States.
W. Ryan Diver +4 more
wiley +1 more source
Pollen-stigma interaction in Brassica oleracea: the role of stigmatic proteins in pollen grain adhesion. [PDF]
, 1980 The adhesion of pollen grains to the stigmas of Brassica oleracea was assayed after treatment of the stigmas wiuth protease and/or cycloheximide. Treatment with protease alone adversely affected pollen grain adhesion.
Stead, AD, Dickinson, Hugh, Roberts, IN
core +2 more sources
Comparative pollen morphology of Calycanthaceae for their taxonomic implication
European Journal of Biological Research, 2020 The pollen morphology of four species of Calycanthaceae is described based on the observation of scanning electron microscopy and light microscopy. All pollens are monad, large grain category. The pollen grain was elliptic with disulcate.
Niroj Paudel, Kweon Heo
doaj
Image analysis in automatic system of pollen recognition
Acta Agrobotanica, 2012 In allergology practice and research, it would be convenient to receive pollen identification and monitoring results in much shorter time than it comes from human identification.
Piotr Rapiejko +3 more
doaj +1 more source
Microscopy Research and Technique, EarlyView.This study provides the palynological analysis of 12 Crucianella L. taxa using LM and SEM. Variations in pollen size, aperture number, and exine ornamentation were identified as key traits, demonstrating their taxonomic value for distinguishing closely related species and subspecies within the genus. ABSTRACT Crucianella L.
Sevcan Celenk +3 more
wiley +1 more source
Scientific ReportsThis study was carried out to examine the effect of aqueous or ethanolic date palm pollen grain extract on Phoenix dactylifera, cv. Zaghloul fruits. Pollen grain extracts were prepared from male date palm trees cv. Barhi.
Neveen B. Talaat +3 more
doaj +1 more source
BMC Plant Biology, 2012 Background The pollen grain contains the male gametophyte that extends a pollen tube that grows through female tissues in order to deliver sperm to the embryo sac for double fertilization. Growing pollen tubes form periodic callose plugs that are thought
Qin Peng +3 more
doaj +1 more source
Decoupling climate and human impacts on the nitrogen cycle during the Irish Bronze Age
Journal of Quaternary Science, EarlyView.ABSTRACT Disentangling climate variability and human activity in past nitrogen cycling is key to understanding ecosystems. Previous studies in Ireland observed a widespread, permanent shift in terrestrial nitrogen cycling during Later Prehistory, potentially linked to intensifying land‐use.
Sarah Ferrandin +2 more
wiley +1 more source
Journal of Quaternary Science, EarlyView.ABSTRACT The northern European distal cryptotephra framework is constantly developing both in terms of identification of new tephra horizons and improved age constraints for the already well‐established tephra marker horizons. However, many prehistoric tephra layers have only been dated by the radiocarbon method, with its inherent problems.
Maarit Kalliokoski +2 more
wiley +1 more source