a naturally occurring mutation that develops occasionally on fruit trees, causing one or more branches to produce fruit with different characteristics than the rest of the tree

a naturally occurring transformation that develops occasionally on fruit trees

Mutations in perennial buds that give rise to entire branches having a unique phenotypic characteristic. Example: the red delicious apple.

A somatic mutation arising in a bud and producing a genetically different shoot. Bud sports includes changes due to gene mutation, somatic reduction, chromosome deletion or polyploidy.

A bud sport is a part of a plant or tree, for example, a leaf, shoot or flower, which due to a genetic mutation clearly differs from the rest of the plant, and which can also be grafted to grow new plants which retain this genetic difference as a new cultivar.