Corn Variety CV850339 for Controlled Pollination and Hybrid Uniformity

The patent applies homogeneity by developing highly inbred corn lines through multiple generations of self-pollination and selection, creating genetically uniform parental lines. This ensures that all plants in the breeding program have identical or nearly identical genotypes, eliminating genetic variability and ensuring predictable hybrid performance. The inbreeding process continues until homozygosity is achieved at all loci, creating a homogeneous genetic base for reliable trait combination.

The patent applies preliminary action by implementing rigorous selection criteria and phenotypic evaluation at each generation of inbreeding, allowing early identification and elimination of non-conforming plants. This preliminary screening prevents the propagation of genetic variability and accelerates the achievement of homozygosity. The method also includes preliminary testing of inbred lines for desired traits before advancing to hybridization, reducing the overall time required to develop stable, uniform lines with target characteristics.

The patent applies segmentation by dividing the corn population into distinct, isolated inbred lines that are genetically uniform within each line. Each inbred line is maintained as a separate, pure genetic unit through controlled self-pollination and physical isolation. This segmentation ensures that when cross-pollination occurs between lines, the resulting hybrids have predictable and uniform performance because the parental lines themselves are genetically homogeneous, eliminating within-line variability while maintaining between-line diversity for trait combination.