Genetics of stripe rust resistance in barley

The genetics of resistance to stripe rust races G and 57 was studied in a 4 X 4 diallel set of crosses involving three donors namely, Himani, EB 1556 and EB 1626, and a susceptible parent, Fongtein Barley, Himani carries one dominant gene, Ps1, to race G and one dominant (Ps1) and one recessive (ps4) genes to race 57. The seedling resistance of EB 1556 is governed by one recessive gene each for races G and 57. The recessive gene conferring resistance to race 57 was identified as ps4. Resistance of EB 1626 to race G is controlled by two recessive genes and torace 57 by one recessive gene. Isogenic lines are being developed in variety Fongtein Barley.