ISHS Acta Horticulturae 624: XXVI International Horticultural Congress: Elegant Science in Floriculture
MODE OF INHERITANCE AND ALLELE EXPRESSION OF THREE MAJOR ANTHOCYANADINS IN EUSTOMA GRANDIFLORUM CULTIVARS |
| Authors: | A.F.M.J. Uddin, F. Hashimoto, Y. Sakata |
| Keywords: | Genotype, segregation, multiple allelism, flavonoid biosynthesis, flavonoid B-ring hydroxylation |
| Abstract:
The inheritance of three major anthocyanidins, pelargonidin (Pg), cyanidin (Cy) and delphinidin (Dp), was studied in Eustoma flowers. A clear phenetic segregation in the F2-population was observed with the presence of alleles for anthocyanidins synthase, which appeared basically with Mendelian ratios. Based on these observations and Chi-square analysis, multiple alleles are proposed in the B-ring hydroxylation system, with at least four alleles responsible for the flavonoid 3'- and/or 3',5'-hydroxylase. The genotypes are presented as HT, HF, HD and HO in Eustoma flowers, controlling 3'-; 5'-; 3',5'-; and 3'- and 3',5'-hydroxylation, respectively. | |
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