This document summarizes an international workshop on applying mathematics, omics technologies, and modeling to discover crop germplasm with adaptive traits for climate change. The workshop brought together researchers, breeders, and stakeholders to discuss challenges of sustaining agriculture in drylands under climate change. Key topics included the impacts of climate change on drylands agriculture, modeling approaches to identify climate-resilient germplasm, and using phenomics and genomics to screen gene banks for traits like drought tolerance. The goal was to develop integrated strategies and targeted projects to discover crop varieties adapted to future conditions and improve food security.