The goal of the project is to introgress new diversity into pea germplasm for improvement of key traits for breeding. Three diverse varieties identified as donors of heat stress resistance, high speed portien content, and improved Aphanomyces root rot resistance were introgressed as short chromosomal segments into a common genetic background. This diversity was introgressed into CDC Armarillo which is a highly yielding pea cultivar. Three recombinant inbred line (RIL) populations and three chromosome segment of the donor variety in the genetic background of CDC Amarillo, and collectively representing the entire donor genome. The RILs and CSSLs are being tested in repeated field trials for key traits related to pea performance in western Canada over the coming years. The genetic resources created in this project will be useful for functional genomics studies and pyramiding of genes associated with heat stress resistance, high seed protein content, and Aphanomyces root rot resistance in pea.