Avena fatua L. subsp. fatua v. glabrata Peterm. subv. pseudo-basifixa Thell. as a source of crown rust resistance genes |
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Authors: | J ?ebesta F Kühn |
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Institution: | (1) Plant Protection Division, Research Institute for Crop Production, 161 06 Prague 6, Ruzyn 507, Czechoslovakia;(2) University of Agriculture, Zem d lská 1, 613 00 Brno, Czechoslovakia |
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Abstract: | Summary An accession of Avena fatua L. subsp. fatua v. glabrata Peterm. subv. pseudo-basifixa Thell. (A. fatua L. CS Sel. No. 1), collected in Czechoslovakia in 1971, was found to be resistant to a wide range of crown rust races. Analyses of crosses of this oat with cvs. Weikuss, Leanda, Mona, Rodney A, Rodney B, Rodney M, Dodge and K 316 indicated that the resistance of A. fatua CS Sel. No. 1 is conditioned by one recessive gene which is in interaction with one partially dominant gene with additive effect. The expression of rust reaction was affected by temperature. The crown rust resistance genes of A. fatua L. CS Sel. No. 1 were non-allelic with stem rust resistance genes Pg-2 (A) and Pg-4(B). |
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Keywords: | Avena fatua Avena sativa oats Puccinia coronata avenae crown rust effect of temperature |
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