Editing Cultivar (section)

=== Seed-produced ===

Some cultivars "come true from seed", retaining their distinguishing characteristics when grown from seed. Such plants are termed a "variety", "selection", or "strain" but these are ambiguous and confusing words that are best avoided. In general, asexually propagated cultivars grown from seeds produce highly variable seedling plants, and should not be labelled with, or sold under, the parent cultivar's name.<ref>[http://www.rhs.org.uk/learning/publications/plantsman/0605/opinion.asp Courses / RHS Gardening<!-- Bot generated title -->] {{webarchive|url=https://web.archive.org/web/20051226124519/http://www.rhs.org.uk/learning/publications/plantsman/0605/opinion.asp |date=2005-12-26 }}</ref>

Seed-raised cultivars may be produced by uncontrolled pollination when characteristics that are distinct, uniform and stable are passed from parents to progeny. Some are produced as "lines" that are produced by repeated self-fertilisation or inbreeding or "multilines" that are made up of several closely related lines. Sometimes they are [[F1&nbsp;hybrid]]s which are the result of a deliberate repeatable single cross between two pure lines. A few F2 hybrid seed cultivars also exist, such as ''Achillea'' 'Summer Berries'.

Some cultivars are [[Agamospermy|agamospermous]] plants, which retain their genetic composition and characteristics under reproduction.<ref>Cultivated Plant Code, Articles 2.17–2.18 {{Harvnb|Brickell|2009|pp=7–8}}</ref> Occasionally cultivars are raised from seed of a specially selected provenance – for example the seed may be taken from plants that are resistant to a particular disease.<ref>Cultivated Plant Code, Articles 2.12–2.16  {{Harvnb|Brickell|2009|pp=7–8}}</ref>