Sind Ökotypen von Welschem Weidelgras für den Ökolandbau besser geeignet als Zuchtsorten?

Summary

Ten ecotype populations of Italian ryegrass collected in permanent grassland in
different regions of Switzerland were compared to two currently recommended
cultivars in plot trials under both organic and conventional conditions. On average, the
ecotypes had similar yields as the cultivars under organic conditions, but significantly
outyielded them under conventional conditions. However, some of the best ecotype
populations appeared to be also very suitable for organic agriculture. All ecotypes
were extremely susceptible to crown rust. Therefore, targeted selection is needed to
exploit their potential for use in organic agriculture.