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• Molecular Biological Approach of Crocus sativus L. and its Allies

  112-115

  Ákos Zubor

  Gyula Surányi

  Zoltán Győri

  György Borbély

  József Prokisch

  Views:

  616

  The hay saffron (Crocus sativus L.) is a sterile triploid plant, known in human culture only, with no fertile seeds produced. The origin of saffron is still a mist, however it is assumed to be an autopoliploid mutant or a hybrid. The recent classification and most of the former taxonomic publications define C. sativus to be derived from C. cartwrightianus, a wild species. Because of the sterility of hay saffron it seemed to be reasonable to apply molecular biological methods to complete classical taxonomic studies in examining its relations. The DNA polymorphism based AFLP method has confirmed the close relationship between these species.

• Use of extensigraph in the examination of wheat flours

  17-23

  Norbert Boros

  Mária Borbélyné Varga

  Zoltán Győri

  Views:

  540

  The extensograph is widely used in quality control and research laboratories studying wheat flour quality. The most commonly used measurements include Rm, the maximum resistance (maximum height of the curve); R5 the resistance at a constant extension of 5 cm; E, extensibility (total curve length); Rm/E, the ratio of maximum resistance to extension; and A, the area under curve. The extensograph has proved useful in the classification and assessment of flours on the physical dough properties. Another important application is its use in wheat breeding programs. Furthermore, extensograph is an excellent tool to study the effects of a wide range of ingredients on dough properties of wheat flour (like oxidants, enzymes, salt and additives), and it can also be used measure the changes during the frozen storage. In the present study we provide a review of the scientific literature concerning the possible applications of the extensograph.

• Review of research on salt-affected soils in the Debrecen agricultural high educational institutions, with special focus on the mapping of Hortobágy

  471-484

  Tibor Tóth

  László Pásztor

  Mátyás Árvai

  György Sipos

  Katalin Takács

  Márk Rékasi

  Gábor Szatmári

  Kitti Balog

  Zsófia Adrienn Kovács

  Views:

  196

  The history of the research of Debrecen scholars on salt-affected soils of Hortobágy and the region is very rich and diverse. 
  Focusing on mapping, the following stages can be distinguished, indicating the completeness of the maps and the purpose of the performed work
  − First, quantitative maps (Arany, 1926) for the utilization of the lands at 1:75,000 (Figure 1).
  − Second, quantitative map (Kreybig, 1943) for the utilization of the lands at 1:25,000.
  − Third, category map (Kreybig et al., 1935) testing the suitability of the classification system at  :75,000.
  − Fourth, partial category map (Szabolcs, 1954), showing the reasons of unsuccessful management at 1:10,000.
  − Fifth, partial quantitative map (Csillag et al., 1996), showing the utility of digital sampling at 1:25,000.
  − Sixth, partial quantitative map (Tamás and Lénárt, 2006), showing the capacity of multispectral  remote imagery at 1:100.
  − Seventh, partial quantitative map (Douaik et al., 2006), showing the usefulness of geostatistical  mapping at 1:10,000.
  − Eight, national quantitative maps (Pásztor et al., 2016), showing the applicability of geostatistics for administrative purposes at 1:10,000.
  − Ninth, partial quantitative/category map (authors, 2019), finding the optimal methods at 1:10,000.