Die chronologische Liste zeigt aktuelle Veröffentlichungen aus dem Forschungsbetrieb der Hochschule Weihenstephan-Triesdorf. Zuständig ist das Zentrum für Forschung und Wissenstransfer (ZFW).
8 Ergebnisse
Prof. Dr. Hauke Heuwinkel,
Ernest A. Kirkby,
Jacques Le Bot,
Horst Marschner
Berechtigungen: Peer Reviewed
Phosphorus deficiency enhances molybdenum uptake by tomato plants (1992) Journal of Plant Nutrition 15 (5), S. 549-568.
DOI: 10.1080/01904169209364340
Water culture experiments are described which provide conclusive evidence that Mo uptake by tomato plants is markedly enhanced by P deficiency. In a longterm experiment, which ran for 11 days, in marked contrast to the uptake of other nutrients, a three fold higher Mo uptake rate was observed after only four days of withdrawal of P from the nutrient medium. In contrast to the gradual increase in pH of the nutrient medium of the plants supplied with P, the pH in the medium of the ‐P plants fell. Throughout the growth of these plants net H+ efflux could be accounted for by excess cation over anion uptake, indicating that organic acid extrusion plays no major role in the observed fall in pH. Further evidence that Mo uptake is enhanced in P deficient tomato plants is provided in short‐term nutrient solution experiments (1h and 4h) using radioactive molybdenum (99Mo). Compared with P sufficient plants, the uptake rates of 99Mo by P deficient plants were three to five times higher after 1h and nine to twelve times higher after 4h. Resupplying P during the uptake periods to deficient plants reduced the uptake rate of 99Mo to values similar to those of P sufficient plants. It is concluded that the uptake of molybdate occurs via phosphate binding/ transporting sites at the plasma membrane of root cells. Further support for this conclusion comes from exchange experiments with non‐labelled molybdenum, which show a much larger amount of 99Mo exchangeable from the roots of P deficient plants.
Prof. Dr. Winfried Ruß
Aufbau eines Abfallwirtschaftskonzeptes für Brauereien (1992) Tagungsband zum Energie- und umwelttechnischen Teil der 37. Brauwirtschaftlichen Tagung, Freising, April 27th-29th, 1992 , S. 9/1-9/7.
Prof. Dr. Paul Michels
Nonparametric Prediction of Time Series on the Basis of Typical Course Patterns (1992) Opitz O., Lausen B., Klar R. (eds) Information and Classification. Studies in Classification, Data Analysis and Knowledge Organization. Springer, Berlin, Heidelberg , S. 239-247.
DOI: 10.1007/978-3-642-50974-2_24
Prof. Dr. Paul Michels
Asymmetric Kernel Functions in Non-Parametric Regression Analysis and Prediction (1992) Journal of the Royal Statistical Society. Series D (The Statistician) 41 (4), S. 439-454.
DOI: 10.2307/2349008
Prof. Dr. Knut Hildebrand,
K. Baier
Konzepte der Software-Wiederverwendung (1992) Softwaretechnik-Trends 12 | 1992 (4), S. 40-48.
Prof. Dr. Bernd Hertle
Lebendiger Garten zur Zeit der Vegetationsruhe (1992) Der Palmengarten (3), S. 163-171.
Prof. Dr. Knut Hildebrand
Ein Referenzmodell für Informationssystem-Architekturen (1992) Information Management 7 | 1992 (3), S. 6-12.
Prof. Dr. Bernd Hertle
Wertvolle Glockenblumen für den Garten (1992) Der Palmengarten (2), S. 82-88.
Betreuung der Publikationsseiten
Gerhard Radlmayr
Referent für Wissenstransfer und Forschungskommunikation
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