Vanda Cultivar SPCDW1513 Breeding via Mericloning

The patent applies preliminary action by first performing sexual crossing to generate genetic diversity and obtain seedlings with desired traits, then subsequently applying asexual propagation (mericloning) to fix and stabilize those traits before commercial release. This two-stage approach allows the breeder to first explore genetic variation through crossing, then lock in the desired characteristics through clonal propagation, ensuring both diversity in the breeding process and uniformity in the final product.

The patent reverses the conventional approach by performing asexual propagation before commercial release rather than after. This preliminary asexual propagation stabilizes the genetic material early in the breeding process, ensuring that the floral characteristics are fixed and uniform before the variety is made available to growers. The genetic diversity is then introduced in the subsequent sexual crossing stage, allowing the breeder to work with stable, uniform plant material while still achieving genetic variation for selection.

The patent applies self-service by utilizing the natural totipotence of orchid meristematic tissue, which allows single cells to regenerate entire plants with identical genetic characteristics. This biological self-service mechanism enables the plant tissue itself to propagate and stabilize the desired traits without requiring extensive external testing and verification. The mericloning process leverages the plant's inherent ability to maintain genetic fidelity, reducing the need for prolonged confidential testing while ensuring reliability of the cultivar characteristics.