This inter-institutional project aims at a better understanding of biotic interactions in the organic growing system by investigating the importance of genotype-environment interactions, selecting genotypes suitable for organic farming conditions, implementing variety mixtures for increasing stability and implementing organic variety testing if needed. |
| Experiments: 1) about 110 varieties and six 3-way mixtures assessed over four years under organic and non-organic conditions for agronomical characters including disease resistance to natural occurring diseases and weed competitiveness; 2) multifactorial field experiments looking at weed competitiveness, influence of scald and net blotch interactions on healthy leaf area and yield, and nutrient uptake in few varieties and their combination in mixtures, 3) study of differences in agronomical traits for mixtures in 1:1:1 mixture compared to mixtures using seeds harvested from such mixtures the previous year (resown mixtures) and the average of the component varieties. |
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Analytical aspects: 1) Analysis of genotypeenvironment interactions; 2) association mapping; 3) identification of characters that confer improved productivity in each of the production environments, 4) design of experiments, 5) plant epidemiological models, 6) VCU, 7) evolution in variety mixtures.
Duration and partners
1/4 2002 to 31/12 2005. Partners come from DIASFlakkebjer, DIAS-Foulum, DIAS-Tystofte, KVL-Plant Biology, KVL-Agricultural Sciences and Risø-Biosystems
Risø contribution
BAROF is headed by senior research specialist Hanne Østergård, Biosystems Division. Other Risø participants are PhD student Jeanette Vollmer, and scientist Gunter Backes, now KVL. We contribute with design and analysis of variety mixtures and genotypeenvironment interactions (Hanne Østergård), analysis of interactions between the fungal pathogens Rhynchosporium secalis and Drechslera teres (Jeanette Vollmer, Hanne Østergård) and assessment and analysis of molecular markers for the included varieties (Gunter Backes).
Read more about the project here.
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