Test Cross Selection
Test cross selection refers to breeding practice where a plant exhibiting desired traits is crossed with a homozygous recessive parent (often called a 'tester') to evaluate the genetic makeup of the unknown parent. This method helps breeders determine whether favorable traits are homozygous or heterozygous, and assess the concentration of recessive alleles. Commonly employed in cannabis breeding when stabilizing new cultivars or verifying genetic purity before committing resources to larger breeding populations. The offspring phenotypes reveal hidden genetic potential in the parent material, informing decisions on which lines warrant continued development.
Test Cross Selection strains
No strains tagged into Test Cross Selection yet — they'll appear here as breeders submit lineage records under this aroma.
Test cross selection refers to breeding practice where a plant exhibiting desired traits is crossed with a homozygous recessive parent (often called a 'tester') to evaluate the genetic makeup of the unknown parent. This method helps breeders determine whether favorable traits are homozygous or heterozygous, and assess the concentration of recessive alleles. Commonly employed in cannabis breeding when stabilizing new cultivars or verifying genetic purity before committing resources to larger breeding populations. The offspring phenotypes reveal hidden genetic potential in the parent material, informing decisions on which lines warrant continued development.
Breeders use test crosses to make data-driven selections early in development cycles, reducing time spent on genetically inferior material. This technique accelerates stabilization of IBL (inbred line) and F1 hybrid projects by exposing recessive traits that might otherwise remain hidden for multiple generations.
Educational reference · Cultivar metadata only · No medical claims