Hybrid Corn Inbred Line Strategy for Stable Trait Uniformity

The patent applies preliminary action by developing and utilizing inbred lines with stable, uniform genetic composition before creating hybrids. The inbred lines are prepared in advance through multiple generations of self-pollination and selection, ensuring genetic uniformity is established before the hybridization step. This preliminary preparation of genetically stable parent lines directly enables the achievement of uniform and stable hybrid traits without requiring complex breeding processes during hybrid production.

The patent applies local quality by creating hybrids from highly uniform inbred lines that have been selectively bred for specific local genetic characteristics. Each inbred line is developed with a specific genetic composition optimized for particular traits, and when these uniformly composed inbreds are crossed, the resulting hybrid population achieves uniformity. The local quality of the inbred parent lines is what enables uniform hybrid production, effectively managing the balance between genetic diversity and uniformity.

The patent applies preliminary action by pre-developing the inbred lines through multiple generations of self-pollination and selection before the actual hybrid production. This preliminary development of genetically uniform inbred lines is performed in advance, allowing the hybridization process to proceed more efficiently. The time investment in preparing uniform inbred parents is made beforehand, enabling faster and more uniform hybrid crop maturity without compromising genetic uniformity.

The patent applies merging (combining) by integrating multiple breeding approaches - specifically combining self-pollination for inbred line development with controlled cross-pollination for hybrid creation. The method merges the advantages of both techniques: self-pollination provides genetic uniformity and stability, while controlled cross-pollination introduces desired traits and creates heterosis. This merged approach efficiently incorporates multiple desirable traits into hybrids while maintaining breeding process effectiveness through systematic integration of the two pollination methods.