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| Winkler, J.. |
| The aggregate zooids of Salpa fusiformis Cuvier, 1804, S. maxima Forskål, 1775, and the group of the species S. aspera Chamisso, 1819, S. younti Van Soest, 1973, S. thompsoni Foxton, 1961, and S. gerlachei Foxton, 1961, show a difference in the arrangement of the oral musculature. Differences in the solitary zooids are less clear. Differences have also been found in the total number of muscle fibres of the oral musculature in the aggregate zooids of the genera Salpa and Weelia. The aggregate and solitary zooids of the genus Weelia can be distinguished on their oral muscles from those of the genus Salpa. The aggregate zooids of Salpa fusiformis show clinal variation in the number of muscle fibres of the oral musculature. |
| Tipo: Article / Letter to the editor |
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| Ano: 1975 |
URL: http://www.repository.naturalis.nl/record/505522 |
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| Hartl, W.; Berger, S.; Birschitzky, J.; Bistrich, H.; Bürstmayr, H.; Diethart, I.; Flamm, C.; Fleck, A.; Friedel, J.; Fuchs, F.; Girsch, L.; Grausgruber, H.; Gollner, M.; Hofer, M.; Hrbek, R.; Jakupaj, S.; Huber, K.; Kinastberger, A.; Lafferty, J.; Leonhardt, C.; Löschenberger, F.; Luftensteiner, H.; Mechtler, K.; Oberforster, M.; Petrasek, R.; Ratzenböck, A.; Schulmeister, K.; Schweiger, P.; Vollmann, J.; Weinhappel, M.; Winkler, J.; Zechner, E.. |
| In the Austrian research project “Basic principles for breeding, multiplication and variety testing for organic agriculture” (from 2004 until 2008) novel methods for the assessment of the suitability of seed and cultivars for organic farming were developed and evaluated by an interdisciplinary co-operation of researchers, breeders and variety testers. Organic farming requires specific combinations of crop plant characters, especially seed health and resistance against seed-borne diseases. Another crucial feature is the competitive ability against weeds. Early development was found to significantly increase the competitiveness of different crop plants. Genotypic variation in characters necessary for an efficient utilisation of below-ground... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Weed management Breeding; Genetics and propagation. |
| Ano: 2009 |
URL: http://orgprints.org/14498/1/Hartl_14498.pdf |
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| Esperschütz, J.; Gattinger, A.; Buegger, F.; Lang, H.; Munch, J.; Schloter, M.; Winkler, J.. |
| A continuous labelling experiment using 13C-CO2 was set up in open-top chambers in order to follow fluxes of assimilates from the plant into the rhizosphere. Labelling was performed for one growing season by adding low amounts of CO2 depleted in 13C to the atmosphere of the open-top chambers, resulting in a difference of ∆ 13C 5‰ V-PDB compared to ambient conditions. The label was recovered in both plant parts and soil microbial communities, analysed via phospholipid fatty acid (PLFA) side chains. PLFA 18:2ω6,9 showed a significant incorporation of the 13C label in October, indicating that fungi utilized plant derived carbon. In bacterial PLFA no label incorporation was detected, probably due to a lower use of rhizodeposits or a preference to older carbon... |
| Tipo: Journal paper |
Palavras-chave: Soil. |
| Ano: 2009 |
URL: http://orgprints.org/26374/1/Esperschuetz_etal_2009_PS323.pdf |
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