caa a22 4500 477133517 CHVBK 20180405111711.0 cr unu---uuuuu 170330e19970301xx s 000 0 eng 10.1023/A:1002946004268 doi (NATIONALLICENCE)springer-10.1023/A:1002946004268 Variation between and within Ethiopian barley landraces [Elektronische Daten] [Fekadu Alemayehu, J.E. Parlevliet] Up to 100 single plant derived lines of 18 barley landraces, collected from 18 localities of six barley growing regions of Ethiopia were studied for two years at Holetta, Ethiopia for variation in five quantitative traits; scald severity, earliness, plant height, 1000 grain weight, and leafiness. The relative latent period in the adult plant stage to barley leaf rust, a good measure for partial resistance, was assessed on the landrace lines at Wageningen, The Netherlands. The observed variation between and within landraces was very large for all traits. The magnitude of variation was so large that most, if not all, plants within a landrace had a different genotype. The landraces also varied in the degree of variation. Some landraces, 1726 and 3288 for instance, were more variable for most or all traits than other landraces such as 208925 and 212938. Days to heading and scald severity were significantly (P = 0.01) correlated with altitude, r being 0.66 and - 0.65, respectively. Resistance to scald and leafiness also increased with altitude. On average landraces became later, more resistant to scald and more leafy the higher the altitude of collection. This associated complex of traits could be an adaptation to the wetter and cooler conditions at higher altitudes. Kluwer Academic Publishers, 1997 barley nationallicence barley leaf rust nationallicence Puccinia hordei nationallicence scald nationallicence Rhynchosporium secalis nationallicence earliness nationallicence landraces nationallicence leafiness nationallicence plant height nationallicence partial resistance nationallicence resistance nationallicence 1000 grain weight nationallicence Alemayehu Fekadu Holetta Research Centre, Institute of Agricultural Research (IAR), P.O. Box 2003, Addis Ababa, Ethiopia aut Parlevliet J.E. Plant Breeding Department, Agricultural University, P.O. Box 386, 6700 AJ, Wageningen, The Netherlands aut Euphytica Kluwer Academic Publishers 94/2(1997-03-01), 183-189 0014-2336 94:2<183 1997 94 10681 https://doi.org/10.1023/A:1002946004268 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1002946004268 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alemayehu Fekadu Holetta Research Centre, Institute of Agricultural Research (IAR), P.O. Box 2003, Addis Ababa, Ethiopia aut NATIONALLICENCE 700 1- Parlevliet J.E. Plant Breeding Department, Agricultural University, P.O. Box 386, 6700 AJ, Wageningen, The Netherlands aut NATIONALLICENCE 773 0- Euphytica Kluwer Academic Publishers 94/2(1997-03-01), 183-189 0014-2336 94:2<183 1997 94 10681 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer