Genetic principle of hybrid breeding

1. Gene recombination can produce new genetic variation: in the process of hybridization, genes from different parents recombine and produce new genetic variation. This variation can provide more selection materials for breeding, thus creating new fine varieties.

2. Gene recombination can improve the combination efficiency of excellent genes: through hybridization, excellent genes from different parents can be recombined, so that these excellent genes can be combined more effectively. This combination can make the goal of breeding more clear and efficient, and improve the success rate of breeding.