Because of genetic load, the successful breeding of racing pigeons is a continuous process of elimination and searching. Searching for the best breeders. It s like having a garden, if you don't eliminate the weeds, in the end there is nothing to harvest.
Gardening also involves searching for the best seed varieties.
The economic benefits of heterosis for mankind have been and still are enormous. The benefits have mainly been in the food production industries of agriculture. The steak dinner you had for supper last night, including all the vegetables, was indirectly a benefit of heterosis. Gardening and horticulture are also benefiting from heterosis. Heterosis is the genetic term for hybrid vigor.