ISHS Acta Horticulturae 63: I International Symposium on Floriculture Plant Breeding and Genetics
ULTRA-VIOLET ABSORBING NECTAR GUIDES IN PETUNIA HYBRIDA: OCCURRENCE AND VALUE IN BREEDING |
| Authors: | D.R. Flaschenriem, P.D. Ascher |
| Abstract:
Certain white petunias contain ultra-violet (UV) absorbing pigments which can be observed using simple ultra-violet light sources. Genetically, this phenotypic character is dominant to non-UV absorbing and is probably inherited as a quantitative trait. Ultra-violet absorbing areas (UVAA) in white petunias display the same type of inheritance as bicolors. Crosses between white petunias containing UVAA and bicolors resulted in modification of the F1 bicolor phenotypes depending on the white parent used. Expression of UVAA is environmentally modified making selection for this character difficult. The genes for both UVAA and bicolor may be the same. Use of UVAA as nectar guides for producing solid colored hybrids by insect pollination does not appear possible, but a knowledge of UVAA could be useful in the production of certain white and bicolor hybrids. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
