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۱Genotype–Dependent Differential Response of Cereal Germinating Seeds Against
اطلاعات انتشار: Journal of Applied Biotechnology Reports، اول،شماره۳، Summer ۲۰۱۴، سال
تعداد صفحات: ۶
Land mines are one of the tragic problems to human security in many countries. Among many techniques suggested detecting landmines, plant–based detectors can be used as a reliable tool for unexploded ordnance detection. This study was conducted to determine different concentrations effect of trinitrotoluene (0, 5, 10, 15, 20, 30, 45 and 60 ppm) on germination and early seedling growth of 6 species of cereals including Barley, Wheat, Durum wheat, Oat, Rye and Triticale. In contrast to oat and durum, barley and wheat genotypes had the best germination and germination index against different trinitrotoluene (TNT) concentrations. TNT showed no impact on the alpha amylase activity of the tolerant (Barley var. Bahman) and susceptible (Durum wheat) genotypes. Under higher TNT concentration, barley had the highest root length and root number and also was the best in dry matter allocation towards root tissues. We measured the different parameters for roots of 6 species of cereals, that oat was sensitive plant when exposed to TNT than others. With emphasis on the wide–range adaptation of cereals to climate and soil characteristics and their extensive and fibrous root systems, it is suggested that barley genotypes especially Bahman variety can be a confident plant to carry the essential genetic structure for explosive detection.

۲Comparison of Extraction Different Methods of Sodium Alginate from Brown Alga Sargassum sp. Localized in the Southern of Iran
اطلاعات انتشار: Journal of Applied Biotechnology Reports، دوم،شماره۲، Spring ۲۰۱۵، سال
تعداد صفحات: ۲
The alginate was extracted with six different methods from Iran south seacoast algae, Sargassum sp, and the percentage yield of alginate was determined. We divided our methods to two groups including acidic extraction and non–acidic. In acidic methods, HCL and H2SO4 were used as a detergent in extraction process and CaCl2 was exerted in non–acidic treatments. All treatments compared with each other and indicated an increasing in alginate yield when different methods used EDTA in extraction process. Finally, the main characteristics of sodium alginate were realized with FT–IR and H–NMR.
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