A new method is described for the analytical determination of imidacloprid residues by LC MS/MS. This method allows the concurrent determination of the parent compound imidacloprid and two toxicologically relevant plant metabolites of this systemic insecticide. The method was successfully applied to examine field residue levels of these contaminants in rape and sunflower crop plants which had b...

The guild of stem-infesting insect pests of sunflower, Helianthus annuus L., within the central Plains is a concern to producers chiefly due to losses caused by plant lodging from the sunflower stem weevil, Cylindrocopturus adspersus (LeConte) (Coleoptera: Curculionidae), and Dectes texanus texanus LeConte (Coleoptera: Cerambycidae). The incidence of a root boring moth, Pelochrista womonana (Ke...

Genes encoding helianthinin, the major seed protein in sunflower, are highly regulated. We have identified putative cis-acting and frans-acting elements that may function in the control of helianthinin expression. A 404-base pair DNA fragment of the sunflower helianthinin gene HaG3D, located 322 base pairs from the transcriptional start site, enhanced pglucuronidase expression in transgenic tob...

in order to study the effect of biological and chemical fertilizers of nitrogen and phosphorus on some physiological, morphological and phenological traits of sunflower this study was carried out in eivanegharb (ilam province) in summer of 2011. treatments were arranged in split factorial based on rcbd with three replications. the main plot include 4 levels of phosphorus and nitrogen chemical f...

Mexican sunflower is native to Mexico and Central America and was introduced into China early last century. Now it has widely naturalized and is exhibiting increasing invasiveness in South China. As this species often dominates bare ground, a habitat characterized by extreme fluctuation in temperature and water, it is reasonable to hypothesize that it has special adaptations to high temperature...

Red-winged blackbird (Agelaiu^ phoeniceus) acceptance of corn as a bait for use in ripening sunflower has been questioned. This study demonstrated that sunflower meats, sunflower achenes, and pearled barley all have potential as alternative bait carriers for 4-AP. Each can be treated with 4-AP so that individual bait particles carry dosages equivalent to those of cracked corn in the registered ...

Experiment was conducted during 2007 growing seasons at the Field of College of Agriculture, Tarbiat Modares University, Tehran Province, Iran to study the effect of biofertilizers (Azosporillum and Azotobacter), nitrogen fertilizer (N) and farmyard manure (FYM) in various rates on the grain and biological yield, seed protein content as well as seed oil content and fatty acid composition in sun...

Effect of Sunflower Seed Meal Fermented with Aspergillus Niger and Saccharomyces Cerevisiae on Intestinal Morphology, Microbial Population, Some Digestive Parameters in Broiler Chicks

Oleoyl-phosphatidylcholine desaturase (FAD2) is a key enzyme involved in fatty acid desaturation in oilseeds, which is affected by environmental temperature. The results of this study show that FAD2 is regulated in vivo via temperature-dependent endogenous oxygen concentrations in developing sunflower (Helianthus annuus L.) seeds. By combining in vivo oxygen profiling, in situ hybridization of ...