Comprehensive Phenotypic Characterization of 74 Additional Silkworm Genetic Resources in Republic of Korea
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The domesticated silkworm (Bombyx mori) is an economically important industrial insect, with more than 340 genetic resources preserved in Republic of Korea. Despite this diversity, many genetic resources remain under-characterized, limiting their potential applications in sericulture and biotechnology. In this study, we conducted a comprehensive phenotypic evaluation of 74 additional silkworm strains, building upon prior characterization efforts. Key developmental and cocoon traits, such as larval duration, weight, pupation rate, cocoon and shell weight, and cocoon color, were measured under standardized environmental conditions. The results revealed considerable variation across all traits, underscoring the rich phenotypic diversity maintained in silkworm genetic resources of Republic of Korea. Colorimetric analysis of cocoons enabled precise detection of pigmentation differences, including subtle color variations within white and yellow cocoons, as well as among strains with visually similar cocoon colors. These findings not only expand the phenotypic database of Korean silkworm resources but also provide a valuable foundation for targeted breeding, conservation, and the development of functional biomaterials.
Abstract
The domesticated silkworm (Bombyx mori) is an economically important industrial insect, with more than 340 genetic resources preserved in Republic of Korea. Despite this diversity, many genetic resources remain under-characterized, limiting their potential applications in sericulture and biotechnology. In this study, we conducted a comprehensive phenotypic evaluation of 74 additional silkworm strains, building upon prior characterization efforts. Key developmental and cocoon traits, such as larval duration, weight, pupation rate, cocoon and shell weight, and cocoon color, were measured under standardized environmental conditions. The results revealed considerable variation across all traits, underscoring the rich phenotypic diversity maintained in silkworm genetic resources of Republic of Korea. Colorimetric analysis of cocoons enabled precise detection of pigmentation differences, including subtle color variations within white and yellow cocoons, as well as among strains with visually similar cocoon colors. These findings not only expand the phenotypic database of Korean silkworm resources but also provide a valuable foundation for targeted breeding, conservation, and the development of functional biomaterials.