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| Müller, Dr. Karl-Josef. |
| Fifty-five spring barley varieties from the German official varieties list were tested for their susceptibility to loose smut (Ustilago nuda) and covered smut (Ustilago hordei) under a simulation of natural infection conditions. For loose smut infection cv. ‘Lawina’ with about 5 % infected plants was used as spreader. In the trial with covered smut 1kg of seeds were shaken with 1g of spores to contaminate the surface of barley seeds before sowing. Only ‘Steffi’ stayed absolutely free from loose smut during two infection cycles at two locations. With an average of 12.6 % plants with loose smut ‘Danuta’ was the most susceptible. Most susceptible to covered smut were ‘Tunika’ with 13.2 % and hulless ‘Taiga’ with 15 % infected plants. Thirteen varieties... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection Breeding; Genetics and propagation Values; Standards and certification. |
| Ano: 2005 |
URL: http://orgprints.org/3343/1/3343.pdf |
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| Müller, Dr. Karl-Josef. |
| The results show that thousand grain weight, protein content of seed, seed contamination with fungi and seed emergence influenced yield potential of organically produced seeds of spring barley in variety trials under organic farming conditions during three years. Certified organic seed on average had smaller grains, lower protein content and brought 5% less yield than conventionally produced seeds of the same variety offered for trials by breeders. Different susceptibilities of the seeds for contamination with fungi influenced the ranking of varieties and seed lots additionally. The more of the previos seed quality parameters reached acceptable levels during organic seed production, the better starting point for a better yield was obtained. The... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Breeding; Genetics and propagation Quality and evaluation of inputs. |
| Ano: 2009 |
URL: http://orgprints.org/14227/1/M%C3%BCller_14227.pdf |
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