14490 2 archive 1220 disk0/00/01/44/90 2009-04-14 2009-09-22 08:45:47 2009-08-20 14:40:58 conference_item show 0 de Dieser Beitrag ist im Tagungsband der 10. Wissenschaftagung erschienen: Mayer, J.; Alföldi, T.; Leiber, F.; Dubois, D.; Fried, P.; Heckendorn, F.; Hillmann, E.; Klocke, P.; Lüscher, A.; Riedel, S.; Stolze, M.; Strasser, F.; van der Heijden, M. and Willer, H., (Hrsg.) (2009) Werte – Wege – Wirkungen: Biolandbau im Spannungsfeld zwischen Ernährungssicherung, Markt und Klimawandel. Beiträge zur 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009. Band 1: Boden, Pflanzenbau, Agrartechnik, Umwelt- und Naturschutz, Biolandbau international, Wissensmanagement Band 2: Tierhaltung, Agrarpolitik und Betriebswirtschaft, Märkte und Lebensmittel. Verlag Dr. Köster, Berlin. Der Tagungsband kann beim Verlag Dr. Köster bezogen werden; siehe http://www.verlag-koester.de/buch.php?id=645&start=0&fb_id=37 fibl-plant-protection-pathology int_conf_2009_wita_1_pflanzengesundheit 11.-13. Februar 2009 10. Wissenschaftstagung Ökologischer Landbau Zürich yes 0 http://www.wissenschaftstagung.de/ http://www.verlag-koester.de/buch.php?id=645&start=0&fb_id=37 TRUE poster Schärer Hansjakob Penzkofer Lena Reents Hansjürgen Brändle Frank Saatgut-Testmethoden für Falschen Mehltau an Feldsalat pub 8planthealth Seed-testing methods, seedborne pathogens, Peronospora valerianellae, Valerianella locusta, PCR-detection Peronospora valerianellae is one of the most important pathogens of corn salad. It is seedborne and besides seed treatments there is no possibility to control the disease. The wash-off-test and the grow-out-test are currently in use to test seed lots for the presence of the pathogen. Despite these test methods, there are still seed lots that show infected plants during production of corn salad. This indicates that a low infection rate of a seed lot (< 0.25% - 1%) may lead to serious problems in grower’s production units. To allow an improved identification of seed lots with low infection rate, a specific PCR-based detection method for P. valerianellae was developed. Three test methods were compared for their efficacy to detect contaminated seed lots. Six out of seven seed lots not showing contamination in the standard grow-out test were identified as contaminated. With an extended grow-out test, it was possible to confirm these results from the PCR-test. The PCR based test for P.valerianellae on seed offers the possibility to detect the pathogen below the actual detection limits. 2009 published public 9554 1 14490 1 application/pdf de public
Schärer_14490.pdf
Schärer_14490.pdf 36394 http://orgprints.org/14490/1/Sch%C3%A4rer_14490.pdf 10990 3 14490 2 application/pdf Poster de public
Poster_Feldsalat_schaerer_wisstagung2009.pdf
Poster_Feldsalat_schaerer_wisstagung2009.pdf 1198104 http://orgprints.org/14490/2/Poster_Feldsalat_schaerer_wisstagung2009.pdf