Die Aurea-Sippen von Antirrhinum majus

Molecular cytogenetic characterization of the Antirrhinum majus genome.

As a model system in classical plant genetics, the genus Antirrhinum has been well studied, especially in gametophytic self-incompatibility, flower development biology, and transposon-induced mutation. In contrast to the advances in genetic and molecular studies, little is known about Antirrhinum cytogenetics. In this study, we isolated two tandem repetitive sequences, CentA1 and CentA2, from t...

Chemotropic Response of the Pollen of Antirrhinum majus to Calcium.

An improved spectrophotometric method for the determination of lipoxidase activity was developed and applied in studies of the purified enzyme and crude enzyme preparations from leguminous seeds, with linoleic acid solubilized in Tween 20 as the substrate. The optimum pH was found to be 7.0, 6.5, 6.0, and 5.5, for purified soybean lipoxidase and for the crude lipoxidases extracted from gram flo...

Genetic control of flower shape in Antirrhinum majus.

The asymmetric shape of the Antirrhinum corolla is determined by genes acting differentially along the dorsoventral axis of the flower. Genes so far identified determine asymmetry by acting in dorsal regions. We describe a gene, divaricata, which in contrast to previously identified genes acts in ventral regions of the flower. We show by the analysis of mutant combinations that the divaricata g...

Die Leitwarte von heute verstehen - die Leitwarte von morgen gestalten!

In diesem Beitrag wird eine domänenübergreifende Nutzungskontextanalyse vorgestellt, vor dem Hintergrund der Herausforderung einer stetig ansteigenden Komplexität der Mensch-MaschineSchnittstelle in der Arbeitsumgebung von Leitwartenoperatoren. Die mittels teilnehmender Beobachtung und teilstrukturierten Interviews durchgeführte Erhebung in Leitwarten hatte die Zielsetzung Gemeinsamkeiten in Be...

Die Bedeutung von nationaler Kultur für die Gestaltung von Informationssystemen