The objective of this work was to characterize the morphology and viability of the pollen of 15 genotypes of castor bean (Ricinus communis L.) and to generate information that can assist in the selection of highly promising male parents for future use in genetic improvement programs aimed at producing seeds for oil extraction. Acetolysis and scanning electron microscopy was used to characterize...

BACKGROUND Seasonal variation and regional heterogeneity have been observed in the estimated effect of fine particulate matter (PM2.5) mass on mortality. Differences in the chemical compositions of PM2.5 may cause this variation. We investigated the association of the daily concentration of PM2.5 components with mortality in Nagoya, Japan. METHODS We combined daily mortality counts for all re...

Lolium perenne cultivars differing in their capacity to accumulate water soluble carbohydrates (WSCs) were infected with three strains of fungal Neotyphodium lolii endophytes or left uninfected. The endophyte strains differed in their alkaloid profiles. Plants were grown at two different levels of nitrogen (N) supply in a controlled environment. Metabolic profiles of blades were analyzed using ...

A study was conducted to compare the composition of equine manure as removed from stall, and bedding-free on six horse farms. The farms ranged a pleasure stable with poorly managed stalls an intensively for racehorses. characteristics measured included: moisture content, total nitrogen, ammoniacal nitrate organic phosphorous (expressed P2O5), potassium K2O), calcium, magnesium, sulfur, zinc, co...

Most widely used medium for cultivation of methanotrophic bacteria from various environments is that proposed in 1970 by Whittenbury. In order to adapt and optimize medium for culturing of methanotrophs from freshwater sediment, media with varying concentrations of substrates, phosphate, nitrate, and other mineral salts were used to enumerate methanotrophs by the most probable number method. Hi...

This research work assesses the geochemical characteristics of aquifers in Sango area of Ogun State, Western part of Nigeria with depth ranging from 26.0 to 62.0 m. Water samples were collected from fourteen different boreholes acrossed the town and analyzed for: pH, electrical conductivity (EC), total dissolved solids (TDS), anions (bicarbonate (HCO ), sulphate (SO ), chloride (Cl ), nitrate (...

The results of the effectiveness application calcium ammonium nitrate (CAN) in winter wheat crops “Moskovskaya-39” variety on dark-gray forest, heavy-loamy soil Ryazan region is presented. advantage CAN-a a universal form nitrogen fertilizer, which has neutral reaction and creates optimal conditions for feeding plants with zone its application, where main mass plant roots located, revealed. Alo...

Nitrate is a widespread water contaminant that can pose environmental and health risks. Various conventional techniques be applied for the removal of nitrate from wastewater, such as biological denitrification, ion exchange, nanofiltration, reverse osmosis. Compared to traditional methods, chemical denitrification through zero-valent metals offers various advantages, lower costs, simplicity man...

nitrate is one of the major sources of nitrogen for the growth of plants. it is taken up by plant roots and transported to the leaves where it is reduced to nitrite in the. the main objective of this research was to investigate stimulatory effects of sodium nitrate, potassium nitrate, ammonia and urea on the production/generation of the nitrate reductase mrna in triticum aestivum plants. the pl...