Presence/absence of a CACTA transposon in the CYC2c gene of two genotypes of Helianthus × multiflorus cv. “Meteor” characterized by a radiate inflorescence with different shape of disk flower corollas

Helianthus × multiflorus is a triploid (2n = 51) interspecific hybrid derived from the cross of H. decapetalus with H. annuus that exists in radiate and ligulate inflorescence types. The H. × multiflorus “Soleil d’Or” has a ligulate inflorescence, with actinomorphic corolla of disk flowers converted in zygomorphic ray-like corollas. In “Soleil d’Or”, a truncated CACTA transposable element (TE), named CTEHM1, is integrated in the HmCYC2c gene, a...