Miedaner, Thomas; Merditaj, Vilson; Thiemt, Elisabeth and Hahn, Volker (2005) Züchtungsforschung für den Ökologischen Landbau an der Landessaatzuchtanstalt Hohenheim – Roggen, Triticale und Sonnenblumen. [Breeding research for Organic Farming at the State Plant Breeding Institute Hohenheim – Rye, triticale, and sunflower.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.
Breeding is an important tool to develop varieties with an optimal adaptation to organic farming. Several important traits are not covered by conventional research and breeding. At the State Plant Breeding Institute we are presently working on (1) resistance of rye to ergot (Claviceps purpurea), (2) nitrogen(N)-use efficiency in triticale, and (3) protein content of sunflower. The inheritance of these complex traits is quantitative. They are analysed in replicated field experiments at two locations in three years at several organic farms in Germany. For testing ergot resistance in rye, 68 populations, 250 full-sib families, 64 lines, and their 90 testcrosses were inoculated at mid-flowering by a spore suspension. All four material groups displayed significant (P<0.01) genotypic variation, indicating that a resistance selection should be feasible. N-use efficiency of 64 triticale genotypes was evaluated at two different N-levels. Significant genotypic variation was found, which is a prerequisite for breeding for improved N-use efficiency. To increase protein content, the 230 sunflower inbred lines investigated showed a high variation for protein and oil content. Only a small negative correlation between both traits was found. Thus, it should be possible to breed lines with high protein and high oil contents.
|EPrint Type:||Conference paper, poster, etc.|
|Type of presentation:||Paper|
|Keywords:||Pflanzenzüchtung, Pflanzenbau, Pflanzenernährung, Tierernährung, Lebensmittelqualität, BÖL, BOEL, FKZ 03OE617|
|Subjects:|| Crop husbandry > Crop health, quality, protection|
Crop husbandry > Breeding, genetics and propagation
|Research affiliation:|| International Conferences > 2005: Scientific Conference on Organic Agriculture|
Germany > University of Hohenheim > State Plant Breeding Institute
|Related Links:||http://www.bundesprogramm-oekolandbau.de, http://www.bundesprogramm.de/fkz=03OE617, http://orgprints.org/perl/search/advanced?addtitle%2Ftitle=&keywords=03OE617&projects=BOEL&_order=bypublication&_action_search=Suchen|
|Deposited By:||Thiemt, Dr Elisabeth|
|Deposited On:||05 Mar 2005|
|Last Modified:||12 Apr 2010 07:30|
|Document Language:||German - Deutsch|
|Refereed:||Peer-reviewed and accepted|
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