establish a purebred gene pool

Hybridization is random and two-sided; it can both optimize and degrade. Therefore, purebred gene pools must be preserved, controlled reproductive isolation must be implemented, and inferior hybrid offspring must be proactively eliminated in order to maintain breed stability and superior traits.

Based on the law of bidirectional gene recombination and the rigid need for the survival of purebred germplasm, establishing a rigid reproductive isolation mechanism and strictly eliminating inferior hybrid offspring are necessary scientific means for balancing breeding development and germplasm security. Hybridization can only serve as an auxiliary tool for targeted optimization and is by no means the only direction for breeding. Unordered hybridization and degrading hybridization must be strictly blocked through scientific intervention to prevent inferior genes from continuously contaminating purebred gene pools. The implementation of germplasm protection and hybridization control can be carried out through three types of scientific and technological pathways, forming a comprehensive purebred protection system: the first is germ cell timing and recognition intervention technology, which uses safe agents to target and regulate germ cell recognition signals, enabling germ cells of different breeds to form natural recognition barriers and miss the critical window for fertilization and combination, thereby blocking unordered cross-breed hybridization at the source; the second is inferior gene protein anchoring intervention technology, which relies on existing gene markers and protein recognition technology to precisely anchor known inferior and disadvantageous genes within a population and, through artificial molecular intervention, prevent germ cells carrying inferior genes from completing binding and pairing, thereby avoiding the generation of degrading hybrid combinations at the genetic source; the third is permanent sterilization anchoring technology for inferior hybrid offspring, which, targeting confirmed degrading hybrid varieties such as ligers and degenerated lines of inferior hybrid crops, implements permanent reproductive blocking at the genetic level, ensuring that inferior hybrid individuals cannot reproduce with one another and also preventing them from backcrossing and mixing with native purebred varieties, thereby thoroughly cutting off the chain of inferior gene diffusion.

The ultimate pursuit of scientific breeding has never been endless hybrid mixing, but rather a dynamically balanced development model of strengthening the foundation through purebreds, selectively hybridizing, and eliminating the inferior. Breaking the century-old scientific misconception of "hybridization omnipotence," facing squarely the objective law of the random bidirectional nature of gene recombination, safeguarding the core foundation of single purebred germplasm resources, building a firm breed gene defense line through scientific reproductive isolation, and precisely eliminating degrading products of inferior hybridization—this is the correct scientific path that conforms to the essence of genetics, meets the rigid needs of germplasm security, and balances short-term breeding benefits with long-term species survival. Hybridization is only a means of breeding, never the purpose of breeding; purebreds are the foundation of organisms, and sustainable continuity is the ultimate goal of breeding.