Wheat (Triticum aestivum L.) is grown worldwide and is one of the most important crops for human nutrition. Einkorn wheat (Triticum monococcum) is a diploid relative of bread wheat and both have the A genome in common. The timing of flowering is of major importance for plants to optimally adjust their life cycle to diverse environments. QTL mapping studies indicated that flowering time in cereals is a complex trait, which is controlled by three different pathways: vernalization, photoperiod and earliness per se. In wheat, high-resolution genome-wide association mapping is now possible, because of the availability of a high density molecular marker chip. The main goal of the proposed project is to investigate the regulation of flowering time in wheat using a genome-wide association mapping approach based on a novel high-density SNP array. In particular, the project aims to (1) investigate the phenotypic variation of flowering time of bread wheat and Einkorn wheat in response to environmental cues in multilocation field trials, (2) study the effects of Ppd alleles on flowering time in a candidate 3 gene approach, (3) determine the genetic architecture of flowering time in a high-density genome-wide association mapping, and (4) investigate the plasticity of the genetic architecture of flowering time in wheat by a comparison between bread wheat and Einkorn wheat.
In soils and sediments there is a strong coupling between local biogeochemical processes and the distribution of water, electron acceptors, acids, nutrients and pollutants. Both sides are closely related and affect each other from small scale to larger scale. Soil structures such as aggregates, roots, layers, macropores and wettability differences occurring in natural soils enhance the patchiness of these distributions. At the same time the spatial distribution and temporal dynamics of these important parameters is difficult to access. By applying non-destructive measurements it is possible to overcome these limitations. Our non-invasive fluorescence imaging technique can directly quantity distribution and changes of oxygen and pH. Similarly, the water content distribution can be visualized in situ also by optical imaging, but more precisely by neutron radiography. By applying a combined approach we will clarify the formation and architecture of interfaces induces by oxygen consumption, pH changes and water distribution. We will map and model the effects of microbial and plant root respiration for restricted oxygen supply due to locally high water saturation, in natural as well as artificial soils. Further aspects will be biologically induced pH changes, influence on fate of chemicals, and oxygen delivery from trapped gas phase.
Das Arbeitsgebiet Heizungs-, Kälte- und Klimatechnik umfaßt neben den meteorologischen, energietechnischen, energiewirtschaftlichen und umweltschutztechnischen Grundlagen die Behaglichkeitskriterien, Wärme- und Kälteerzeugung und Verteilung, Systeme der Luftführung, Luftbehandlung sowie die Raumströmung, Betriebsbedingungen bei verschiedenen Nutzungs- und Einsatzarten sowie Möglichkeiten zur Reduzierung des Energieaufwandes durch Wirkungsgradverbesserung, Nutzung von Umgebungswärme und Wärmerückgewinnung aus Abluft und Abwasser. Schwerpunkte sind Wärmepumpen (zur Nutzung von Abwärme und freier Umgebungsenergie) und die Nutzung der Sonnenenergie (passiv und aktiv, zur Teil- und Vollheizung) etc.
Web Map Service (WMS) zum Thema Wettbewerbe in Hamburg.
Zur genaueren Beschreibung der Daten und Datenverantwortung nutzen Sie bitte den
Verweis zur Datensatzbeschreibung.