Postulation of leaf-rust resistance genes in Czech and Slovak barley cultivars and breeding lines

被引:27
作者
Dreiseitl, A [1 ]
Steffenson, BJ
机构
[1] Agr Res Inst Kromeriz, CZ-76701 Kromeriz, Czech Republic
[2] N Dakota State Univ, Dept Plant Pathol, Fargo, ND 58105 USA
关键词
Hordeum vulgare; Puccinia hordei; pedigree analysis; resistance genes; resistance spectra;
D O I
10.1046/j.1439-0523.2000.00495.x
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Leaf-rust resistance (Rph) genes in 61 Czech and Slovak barley cultivars and 32 breeding lines from registration trials of the Czech Republic were postulated based on their reaction to 12 isolates of Puccinia hordei with different combinations of virulence genes. Five known Rph genes (Rph2, Rph3, Rph4, Rph7, and Rph12) and one unknown Rph gene were postulated to be present in this germplasm. To corroborate this result. the pedigree of the barley accessions was analysed. Gene Rph2, as well as Rph4, originated from old European cultivars. The donor of Rph3. which has been mainly used by Czech and Slovak breeders, is 'Ribari' ('Baladi 16'). Rph12 originates from barley cultivars developed in the former East Germany. Rph7 in the registered cultivar 'Heris' originates from 'Forrajera'. A combination of two genes was found in 10 cultivars. Nine heterogeneous cultivars were identified; they were composed of one component with an identified Rph gene and a second component without any resistance gene. No gene for leaf rust resistance was found in 17 of the accessions tested. This study demonstrates the utility of using selected pathotypes of P. hordei for postulating Rph genes in barley.
引用
收藏
页码:211 / 214
页数:4
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