caa a22 4500 467929025 CHVBK 20180406152938.0 cr unu---uuuuu 170328e20061001xx s 000 0 eng 10.1007/s10658-006-9049-9 doi (NATIONALLICENCE)springer-10.1007/s10658-006-9049-9 Mueller Karl-Josef Cereal Breeding Research Darzau, Darzau Hof 1, 29490, Neu Darchau, Germany aut Susceptibility of German spring barley cultivars to loose smut populations from different European origins [Elektronische Daten] [Karl-Josef Mueller] Forty-two registered spring barley cultivars from the German official list were tested under natural infection conditions for susceptibility to loose smut (Ustilago tritici f.sp. hordei) during two test cycles at two locations. Only cv. Steffi was found to be resistant to the local loose smut population. Cultivar Sigrid showed lowest susceptibility because of flowering inside the leaf sheath. Less than 1% infection at all sites showed up in cvs Auriga, Jacinta and Hendrix. Twenty-one cultivars had an infection rate of less than 2%. Cultivar Danuta displayed the highest susceptibility with an average of 12.6%. Another 23 spring barley accessions with expected loose smut resistance were inoculated artificially with loose smut populations obtained from 11 locations in Germany and neighbouring countries. Only Jet with the resistance Un3/6, CDC Freedom with Un8, CIho9973 with quantitative resistance, as well as Lino and GangTuoQuingKeHao1 remained disease-free. In addition to these, another eight accessions in this test group are recommended to become part of a differential tester set to distinguish origins of loose smut. Statistical analysis showed that for scoring of cultivars more importance has to be given to the number of locations for infestation than to the number of test locations to determine the degree of attack. In view of the existing inspection limits for production of certified seed in European countries, the currently registered German barley cultivars put organic seed producers and breeders at high risk in respect to loose smut infection, if the number of generations for multiplication under organic farming increases. Springer Science + Business Media B.V., 2006 Hordeum vulgare nationallicence inspection limits nationallicence Ustilago nuda nationallicence virulence nationallicence European Journal of Plant Pathology Kluwer Academic Publishers 116/2(2006-10-01), 145-153 0929-1873 116:2<145 2006 116 10658 https://doi.org/10.1007/s10658-006-9049-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10658-006-9049-9 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Mueller Karl-Josef Cereal Breeding Research Darzau, Darzau Hof 1, 29490, Neu Darchau, Germany aut NATIONALLICENCE 773 0- European Journal of Plant Pathology Kluwer Academic Publishers 116/2(2006-10-01), 145-153 0929-1873 116:2<145 2006 116 10658 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer