Results 131 to 140 of about 442,091 (288)
, 2018 Introduction: The dissertation broach the issue of the spatial distribution and intensity of pollen and particulate matter concentrations and of the intradiurnal pattern of airborne pollen load of some allergologically relevant species (ash [Fraxinus], birch [Betula], grasses [Poaceae], and mugwort [Artemisia]) at different sites in the city of Berlin.
openaire +3 more sources
Effects on herbicides on hedgerow biodiversity [PDF]
, 2008 Low dosages of herbicides may reduce the number of flowers on non-target plants. Effect of herbicides on flowering and on pollen and nectar production are relevant end-points for effect assessment on non-target species.
Christensen, Kimmie K. +1 more
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Influence of Female Stock on the Functioning of Small Pollen Male Gametes [PDF]
, 1940 W. Ralph Singleton
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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]
, 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
Impact and Correlation of Environmental Conditions on Pollen Counts in Karachi, Pakistan
Iranian Journal of Allergy, Asthma and Immunology, 2015 A quantitative and qualitative survey of airborne pollen was performed in the city of Karachi, and the pollen counts were correlated with different climatic conditions.
Anjum Perveen +3 more
doaj
Colchicine did not affect the viability of induced 2n pollen in Populus tomentosa
Silva Fennica, 2019 Colchicine is widely used as a mutagen to induce production of diploid gametes in plants. However, whether colchicine affects induced pollen viability remains unclear.
Yan Liu +4 more
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Effects of Gamma Radiation on Salix nigra Marsh Cuttings [PDF]
, 1985 Dormant cuttings of Salix nigra Marsh, were exposed to gamma radiation from a cobalt-60 source at a dose rate of 1110 roentgens (r) per minute. Exposure doses ranged from 50 r through 100 Kr with 100% mortality at 10 Kr.
Gehring, Roy Z.
core +2 more sources