The main source of elevated fluoride in plants comes from atmospheric industrial pollution.Because of its extensive industrial use, hydrogen fluoride is probably the greatest single atmospheric fluoride contaminant and is generally considered to be the most important plant pathogenic fluoride (WHO, 1984; Treshow, 1965)…Most thesis introductions include SOME (but not all) of the stages listed below.
Studies in Western Australia (Horne et al., 1981) have reported field injury to vines situated near to brickworks in the Swan Valley and concluded that fluoride pollution can seriously affect grapevines.
Thus classification of cultivars according to levels of sensitivity to airborne fluorides is considered necessary for two reasons- a)knowledge of a resistant cultivar would be of important commercial interest to the vigneron, and b) the possibility of discovering a highly sensitive cultivar to provide an indicator plant to be used to warn growers when ambient conditions were approaching threshold levels(Greenhalge & Brown, 1984).
Germination trials were performed on seeds collected from each species along the fluoride gradient to determine if fluoride has an effect on their viability and hence the regeneration fitness of each species.
A density study was used to determine if there were any differences between numbers of mature and immature trees, number of trees producing seed follicles and the number of trees flowering in this season along a fluoride gradient.
This study investigates the effects of ten years of increased atmospheric fluoride from Tomago Aluminium Smelter, New South Wales on the reproductive processes of three selected native species, Banksia aemula, Bossiaea heterophylla and Actinotus helianthi…
The study aims to determine the effects of the fluoride emissions on the reproductive processes of the selected species by analyzing the differences between several of their reproductive and associated characteristics found along a fluoride gradient.However, fluorides can cause damage to sensitive plant species even at extremely low fluoride concentrations(Hill,1969), accumulate in large amounts within the plant and cause disease if ingested by herbivores(Weinstein, 1977).Doley (1981) summarized several unpublished studies that compared the sensitivity rankings of 24 species according to the responses of photosynthesis and the development of visible injury symptoms.You will notice that there are variations not only between the different Schools in your faculty, but also between individual theses, depending on the type of information that is being communicated.An investigation project is all about understanding how to write a research paper introduction.In many Australian plant species, young expanding leaves appear much more severely injured by gaseous fluorides than are old leaves.This suggests, either that the young leaf tissues are more sensitive to fluoride than mature tissues, or that sufficient fluoride enters the tissues directly through the cuticle to disrupt normal leaf development before the stomata have fully developed and opened(Doley, 1986a). Depending on what you need to say in your introduction, you might use one or more stages.Table 1 provides you with a list of the most commonly occurring stages of introductions in Honours theses (colour-coded to show the Moves).Therefore studies of acute phase quasispecies will enhance the understanding of the early virological events of newly acquired HCV infection and ultimately the disease process itself.The hypotheses for this study are that there exist suitable parameters to assess quasispecies complexity.