Improvement of pea yield in heat by phenology and physiology

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Climate change is already unfolding on Canada's prairies. Canada is a top global exporter of pea, a crop mainly grown in western Canada. Pea crops on the prairies yield poorly and inconsistently in warm summers because they experience heat stress in the growing season. Yield instability and reductions negatively affect the pea industry and exports. Pea cultivars (varieties) tested in the last decade have shorter crop life cycles and likely more aborted flowers and pods in warm or dry summers, resulting in low yield. Our pea cultivars need to be more heat tolerant. Surprisingly, the pea crop is still waiting to be improved for a range of stresses.