ASSESSMENT OF 'SELECTION 212' - A WHEAT-RYE RECOMBINANT LINE FOR RESISTANCE TO LEAF AND STEM RUSTS

Abstract

Selection 212, a wheat-rye recombinant between homoeologous chromosomes of wheat and rye, the parental lines and the stocks/ near-isogenic lines each carrying known leaf and stem rust resistance gene were tested against 25 pathotypes of Puccinia recondita tritici and Puccinia graminis tritici in seedlings. These lines were also tested at adult plant stage with highly virulent and prevalent pathotypes of leaf and stem rust pathogen. SeI.212 conferred resistance to all pathotypes of both the rust pathogens. A comparison of infection types spectrum produced on the parental lines, lines with known resistance genes and the recombinant (SeI.212) led to the postulation that SeI.212 carries resistance different from the known resistance genes which is presumably derived from rye. This study also forms the basis for selection of pathotypes for further genetic and cytogenetic analysis of this stock for rust resistance.