caa a22 4500 477134688 CHVBK 20180405111714.0 cr unu---uuuuu 170330e19971001xx s 000 0 eng 10.1023/A:1003032424968 doi (NATIONALLICENCE)springer-10.1023/A:1003032424968 Powdery mildew resistance in barley landrace material. I. Screening for resistance [Elektronische Daten] [J. Helms Jørgensen, H.P. Jensen] A total of 4,681 accessions of Hordeum vulgare landrace material from Ethiopia, East Mediterranean, Near East, Nepal and China were sown in the field and subjected to the natural powdery mildew epidemic in Denmark. Apparently resistant accessions were selected. Selfed progeny from them were retested and reselected in subsequent years at four locations in Denmark. Finally, 16 promising donors of resistance were retained. They were characterized in the field and tested in the seedling stage for reaction to up to 72 different isolates of the powdery mildew fungus. The absence of the corresponding virulences in the Danish airborne powdery mildew population was ascertained in five years. The resistances in the 16 donors are apparently mutually different and from known sources of powdery mildew resistance in barley. Kluwer Academic Publishers, 1997 Erysiphe graminis f.sp. hordei nationallicence genetic resources nationallicence Hordeum vulgare nationallicence recurrent selection nationallicence resistance nationallicence virulence nationallicence Helms Jørgensen J. Risø National Laboratory, Plant Genetics Environmental Science and Technology Department, DK-4000, Roskilde, Denmark aut Jensen H.P. Risø National Laboratory, Plant Genetics Environmental Science and Technology Department, DK-4000, Roskilde, Denmark aut Euphytica Kluwer Academic Publishers 97/2(1997-10-01), 227-233 0014-2336 97:2<227 1997 97 10681 https://doi.org/10.1023/A:1003032424968 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003032424968 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Helms Jørgensen J. Risø National Laboratory, Plant Genetics Environmental Science and Technology Department, DK-4000, Roskilde, Denmark aut NATIONALLICENCE 700 1- Jensen H.P. Risø National Laboratory, Plant Genetics Environmental Science and Technology Department, DK-4000, Roskilde, Denmark aut NATIONALLICENCE 773 0- Euphytica Kluwer Academic Publishers 97/2(1997-10-01), 227-233 0014-2336 97:2<227 1997 97 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer