Hochauflösende Kartierung der Virusresistenzgene rym11 und Ryd3 der Gerste (Hordeum vulgare L.)

wo important resistance genes of barley (Hordeum vulgare L.) - rym11, which confers resistance against the Barley yellow mosaic virus complex [Barley mild mosaic virus (BaMMV), Barley yellow mosaic virus (BaYMV)] and Ryd3, which is effective against Barley yellow dwarf [Barley yellow dwarf virus (BYDV)] - are to be mapped at high resolution by analyzing 5000 F2-plants each as a prerequisite for isolating these genes via a map based cloning approach. For this purpose segmental recombinant inbreed lines (RIL), originated from the mapping populations and genetically fixed for the respective target interval, undergo an extensive marker analysis as well as repeated virus testing both in the greenhouse and in the field. For rym11 5102 and for Ryd3 3213 F2-plants have been analysed up to now. For both populations first phenotypic data is present and several closely linked markers could be mapped.