The quantity and quality of crop yields is determined by the interplay of genetic, environmental, and management variables, or GxExM. Environmental factors (e.g., changing temperature, rainfall, soil condition, and pests) and a lack of access to crop management tools and strategies significantly limit the yield potential of farmers around the world.
Crop breeding, whether done "conventionally" or using genetic engineering techniques, works to create new and improved plant varieties that are
- more resilient to environmental stressors;
- resistant to pathogens and pests; and
- higher in nutritional value.