conditions that favour the crevice corrosion of titanium in the same solutions The electrochemical behaviour of the macrocouple /(titanium in aerated acidic solution) has been investigated in order to establish the reasons for the anomalous behaviour of titanium in the presence of shielded areas that has been reported in the literature and is sometimes observed in process equipment, and then to determine the. Given the gene expression levels and the changes of physiology traits, we conclude that urea and ammonium nitrate have the best effect on grapevine calcium nitrate can help to reduce the flower and berry dropping rate ammonium sulphate and sodium nitrate have relatively poor effects on grapevine. Moreover, the N fertilizer which had stronger and longer influence on the N metabolic genes could enhance the physiology traits more dramatically. N metabolic genes showed similar expression patterns towards the same type of fertilizer in the two periods, whereas foliar applied different types of N fertilizers, their expression patterns changed. The results showed that, in general, the expression levels of the five N metabolic genes were increased after foliar applied different types of N fertilizers in the two periods. ![]() ![]() The expression levels of five grapevine N metabolic genes, including VvGHD, VvNiR, VvNR, VvGS and VvAS were analyzed, some physiological traits including the flower and fruit dropping rate, leaves and shoots growth rate, chlorophyll content and the fruit size of grape berry were also investigated. In order to study the influence of different type of N fertilizers on grapevine (Vitis labruscana ‘Black Summer’) trees were used as experiment materials and fertilizers foliar application trails were conducted in the flowering and veraison stages.
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