Case Study on Genetic Resource Utilization for Sweet Potato Breeding in China

Sweet potato ( Ipomoea batatas ) is a globally significant crop valued for its versatility, nutritional benefits, and resilience. In China, the development of improved sweet potato varieties plays a vital role in addressing food security, economic sustainability, and agricultural productivity. This study provides a comprehensive review of the genetic resources available for sweet potato breeding, including landraces, wild relatives, and modern breeding lines, with a focus on their collection, preservation, and utilization. We further analyze breeding programs in China, highlighting efforts to enhance yield, stress tolerance, and nutritional value through traditional and molecular breeding approaches. A dedicated case study demonstrates the practical application of local genetic resources in a regional breeding program, detailing the selection of parental lines, hybridization techniques, field trials, and multi-environment evaluations. Challenges related to resource access, intellectual property, and environmental adaptation are discussed, along with opportunities for collaboration and innovation. This research underscores the importance of genetic diversity and biotechnology in advancing sweet potato breeding, with recommendations to expand the genetic base and integrate cutting-edge techniques. The findings aim to support sustainable breeding strategies that meet the evolving needs of agriculture and consumers.