Introgression of Novel Sources of Rust Resistance from Wild Triticum and Aegilops Species into Bread and Durum Wheat Cultivars

Abstract

The Genetic base for resistance to various diseases among bread wheat cultivars in India is extremely narrow. The germplasm of wild progenitor and nonprogenitor Triticum and Aegiiops species comprises a huge reservoir of unexploited variability for disease resistance to various wheat diseases. The germplasm of wild Triticum and Aegiiops species maintained at PAU, Ludhiana (Table 1) has been exhaustivdy screened under laboratory and field conditions over years and locations and a number of useful sources for resistance to leaf rust (Puccinia recondita) and stripe rust (P. striiformis) have been identified (Harjit Singh and Dhaliwal