pure-line selection

Pure-line selection is a method used in biology, particularly in plant breeding, to develop new varieties with desired characteristics. This process involves selecting superior-looking individual plants from a genetically diverse population. The progenies of these selected plants are then grown and evaluated, often over several years, through observation and more extensive trials to measure their yielding ability and overall performance. If a progeny proves superior to existing varieties, it is released as a new "pure-line" variety. This method was highly successful in the early 1900s by exploiting genetically variable land varieties. While its importance has decreased for major cultivated species, it remains valuable for less-selected species. A variation of this method includes selecting single-chance variants or mutations.12