With the recent registration of the new diploid varieties Caribu and Trigris, bred at the Research Station Agroscope Reckenholz-Tänikon ART, further progress in the genetic improvement of Italian ryegrass (Lolium multiflorum ssp. italicum Volkart ex Schinz et Keller) has been achieved. Caribu and Tigris are the result of targeted breeding efforts, aiming at improving the resistance against crown rust of a highly performing, but susceptible ecotype material which previously had given rise to the variety Oryx. Both new varieties exhibit the same very rapid development in spring as Oryx and make a high yield in the first cut possible when taken early in the season. The resistance against crown rust is strongly improved compared with Oryx, particularly for Caribu. Caribu also persists more securely for two full main harvest years than does Oryx. The results show the great potential for success of a breeding strategy involving pair crosses between vigorously growing, but disease susceptible ecotype plants and highly disease resistant plants from well-established breeding material.
Birdsfoot trefoil and sainfoin are used in mixtures for perennial hay meadows and for tannin-containing fodder. Agroscope is adding two new cultivars of birdsfoot trefoil to the ‘List of Recommended Varieties of Forage Plants’, whilst there is no change in the case of sainfoin.
Tall oat grass and golden oat grass are typical hay-meadow grasses that are also suitable for forage mixtures. Of the four tall and three golden oat grass varieties tested, only one new variety of tall oat grass is likely to make it onto the List of Recommended Varieties.
Stevenel P., Wendling M., Brabant C., Suss H., Savoyat C., Dierauer H., Mascher F., Charles R.
FiBL and Agroscope investigated bread wheat varieties to determine their yield and quality stability. The results show that the choice of variety must be adapted to the site and that high yield potential does not go hand-in-hand with a high protein content.