International Journal of Molecular Evolution and Biodiversity, 2025, Vol.15, No.2, 64-72 http://ecoevopublisher.com/index.php/ijmeb 66 adaptability, GS has significantly accelerated the selection process of superior varieties. In terms of dry matter content and potato chip quality, the relevant prediction models showed high accuracy in actual breeding populations, proving its practical utility in screening clones with high yield, high specific gravity and high-quality processing traits. Especially in the breeding of processing varieties, GS provides a more efficient screening channel. Its introduction not only improves the selection efficiency, but also is expected to significantly shorten the breeding cycle and speed up the cultivation of superior varieties (Poudel and Thapa, 2021). 3.2 Applications in breeding for disease resistance and stress tolerance The application of GS has also expanded to breeding for disease resistance and stress resistance. In multiple breeding projects, GS technology has been used to identify molecular markers related to resistance to pests and diseases such as late blight, aphids, and whiteflies, significantly improving the efficiency of early screening and effectively reducing breeding costs. Combining functional genomics, high-throughput genotyping, and multi-omics data, researchers have constructed a multidimensional resistance prediction model, providing a systematic breeding path for complex pest and disease traits (such as late blight resistance) (Figure 1) (Tiwari et al., 2022; Wang and Zhang, 2024). At the same time, the GS model has also been successfully applied to predict resistance to Phytophthora infestans, strengthening the scientific basis for disease-resistant breeding of varieties (Stich and Van Inghelandt, 2018). Figure 1 A schematic presentation of different approaches used for genetic enhancement and improvement of potato under various biotic and abiotic stresses applying breeding and modern genomics approaches (Adopted from Tiwari et al., 2022) In addition to biotic stress, GS also shows potential in the field of abiotic stress. Taking drought tolerance as an example, existing studies have identified multiple key genes and their related response pathways through GS, providing strong support for the improvement of drought tolerance traits (Qin et al., 2022). These results further confirm the important value of GS technology in enhancing the comprehensive stress resistance of crops. 3.3 Adoption and progress of GS in major global potato breeding programs With the increasing maturity of technology and the continuous decline in costs, GS has been widely promoted in potato breeding programs around the world. In the United States, GS has been successfully integrated into the processing potato breeding process, improving the efficiency of genetic analysis of key traits and providing strong support for the early selection of excellent lines.
RkJQdWJsaXNoZXIy MjQ4ODYzNA==