Dahlia is a genus of hairy, tuberous, herbaceous perennial plant life native to mexico and important america. A member of the asteraceae (previously compositae) family of dicotyledonous plants, its lawn household therefore include the sunflower, daisy, chrysanthemum, and zinnia. There are forty two species of dahlia, with hybrids commonly grown as lawn plants. Flower paperwork are variable, with one head in step with stem; these may be as small as 5 cm (2 in) diameter or as much as 30 cm (1 toes) ("dinner plate").
This fantastic range outcomes from dahlias being octoploids—this is, they have got eight units of homologous chromosomes, while maximum vegetation have simplest . In addition, dahlias also incorporate many transposons—genetic portions that move from place to place upon an allele—which contributes to their manifesting such splendid variety. The stems are leafy, ranging in top from as little as 30 cm (12 in) to more than 1. Eight–2. Four m (6–eight ft). The general public of species do not produce scented flowers. Like maximum plants that do not attract pollinating insects thru scent, they are brightly colored, showing maximum shades, with the exception of blue. The dahlia become declared the countrywide flower of mexico in 1963. The tubers had been grown as a food crop through the aztecs, but this use in large part died out after the spanish conquest. Tries to introduce the tubers as a food crop in europe were unsuccessful.
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