linebreeding; continuous back crossing
Technical term in genetics and animal/plant breeding. Refers to a breeding strategy where offspring are repeatedly crossed back to a parent or ancestor to consolidate desired traits.
In dog breeding, linebreeding is sometimes used to fix specific traits.
In this study, continuous back crossing was used to create disease-resistant lines.
Compound of 連続 (continuous), 戻し (back), and 交配 (crossing/breeding). The term is a direct calque from English 'continuous back crossing'.