Sowing the Seeds of Security: Unravelling Genetic Diversity for Sustainable Crop Improvement

Abstract

Genetic diversity, encompassing the variety of genes within a species, is crucial for feeding humanity and stands as a cornerstone for crop improvement. It aids in adaptation of crops to the changing environmental conditions, resistance to pests and diseases, and the development of resilient, high-yielding crop varieties. Now-a-days breeding practices focus mainly in development of high-yielding varieties, which inadvertently diminishes genetic diversity within crops. On the other hand, cultivation of monocrop or few varieties in larger scale makes the crops vulnerable to new strains of pathogens and pests which will impart immediate pressure on food security. This reduction in genetic diversity poses risks in the context of climate change, where diverse gene pools increase the likelihood of plants being tolerant to new conditions. The adaptability conferred by genetic diversity becomes crucial during unpredictable weather patterns and emerging agricultural challenges. In the face of a burgeoning world population and climatic uncertainties, comprehending the intricacies of genetic variation becomes paramount. As the current rate of genetic gain is insufficient to meet the future food requirement to feed the ever-growing population, new strategies need to be devised. This chapter illuminates the pivotal role of genetic diversity in enhancing crop improvement strategies and its impact on adaptability, resilience, and productivity of crops across diverse agroecosystems. Unravelling the genetic tapestry empower researchers, practitioners, and policymakers with insights crucial for steering agriculture toward a more sustainable and food-secure future.