VIEW ARTICLE

Genetics

Inheritance of Rust Resistance in Inbred Lines of Vicia faba. R. L. Conner, Research associate, Plant Science Department, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada, Present address: Agriculture Canada, Lethbridge, Alberta T1J 4B1. Contribution 601, University of Manitoba, Winnipeg; C. C. Bernier, professor, Plant Science Department, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada. Phytopathology 72:1555-1557. Accepted for publication 10 May 1982. Copyright 1982 The American Phytopathological Society. DOI: 10.1094/Phyto-72-1555.

Crosses between seven inbred faba bean (Vicia faba) lines, selected for uniform reaction against either isolate SP3 and/or SP51 of rust Uromyces viciae-fabae, revealed the presence of three different genes for resistance. Gene Fr1 found in lines Ack-11 and 2N12-2 provides resistance only to isolate SP3. A second gene, Fr2, for resistance to rust isolate SP3 was detected in lines Erf-1-4 and MB-1-2. An additional homozygous gene Fr3 in MB-1-2 conditioned resistance only to isolate SP51. Certain heterozygous resistance genes present in Erf-1-4 and MB-1-2 had their segregation masked by the homozygous resistance genes.