Half-sib selection with progeny testing

• Selections are made based on progeny test performance instead of phenotypic appearance of the parental plants.
• Seed from selected half-sibs, which have been pollinated by random pollen from the population (meaning that only the female parent is known and selected, hence the term “half-sib”) is grown in unreplicated progeny rows for the purpose of selection.
• A part of the seed is planted to determine the yielding ability, or breeding value, for any character of each plant.
• The seed from the most productive rows or remnant seed from the outstanding half-sibs is bulked to complete one cycle of selection.

Full-sib selection with progeny testing

• A number of full-sib families, each produced by making crosses between the two plants from the base population are evaluated in replicated trials.
• A part of each full-sib family is saved for recombination.
• Based on evaluation the remnant seed of selected full-sib families is used to recombine the best families.