Inheritance of disc flower color in Helianthus petiolaris Nutt.

A. GUTIÉRREZ, C.DELUCCHI, M. POVERENE

HELIA

Institute of Field and Vegetable Crops, Oil Crops Department

Año: 2009 vol. 32 p. 51 - 58

1018-1806

In Helianthus petiolaris (Asteraceae) disc flowers are usually purple red due to anthocyanin pigments in corolla lobes, style and stigma. However, yellow flowered plants are occasionally found. The inheritance of this trait was studied through crosses between different phenotypes and the results indicated that flower color is controlled by two genes with complementary action, both loci being dominant and independently inherited. This agrees with results obtained in cultivated sunflower, H. annuus where one to three dominant genes have been proposed for anthocyanin expression in different organs.