title: Inheritance and QTL analysis of the determinants of flower color in tetraploid cut roses.
abstract: The success of cut rose cultivars is a direct result of their aesthetic value. The rose industry thrives on novelty, and the production of novel flower color has been extensively studied. The most popular color is red, and it is, therefore, important for breeders to produce a good red cultivar. The final visible color of the flower is a combination of a number of factors including the type of anthocyanin accumulating, modifications to the anthocyanidin molecule, co-pigmentation and vacuolar pH. Here, we analyze the quantitative variation of the biochemical constituents of flower color in a tetraploid rose population and combine this with marker information in the segregating rose population to map the chromosomal locations of putative QTLs for flower color traits. Within our tetraploid population, we found a number of QTLs that were mapped on ICM 1, 2, 6 and 7. We were able to show the effect of the different QTLs on the final visible color of the flower from salmon to dark red.
authors: Wageningen UR Plant Breeding, P.O. Box 386, 6700 AJ Wageningen, The Netherlands ; Selecta Kenya GmbH & Co. KG, P.O. Box 64132, Nairobi, 00620 Kenya.
authors: Virginia W
authors: VW
authors: Gitonga
authors: Wageningen UR Plant Breeding, P.O. Box 386, 6700 AJ Wageningen, The Netherlands ; Deliflor Chrysanten b.v., P.O. Box 77, 2676 ZH Maasdijk, The Netherlands.
authors: Robert
authors: R
authors: Stolker
authors: Wageningen UR Plant Breeding, P.O. Box 386, 6700 AJ Wageningen, The Netherlands ; HAN University of Applied Sciences, P.O. Box 6960, 6503 GL Nijmegen, The Netherlands.
authors: Carole F S
authors: CF
authors: Koning-Boucoiran
authors: Department of Horticulture, Tehran University, Karaj, 31587-77871 Iran ; Department of Horticultural Sciences, University of Zanjan, Zanjan, 45371-38791 Iran.
authors: Mitra
authors: M
authors: Aelaei
authors: Wageningen UR Plant Breeding, P.O. Box 386, 6700 AJ Wageningen, The Netherlands.
authors: Richard G F
authors: RG
authors: Visser
authors: Wageningen UR Plant Breeding, P.O. Box 386, 6700 AJ Wageningen, The Netherlands.
authors: Chris
authors: C
authors: Maliepaard
authors: Wageningen UR Plant Breeding, P.O. Box 386, 6700 AJ Wageningen, The Netherlands.
authors: Frans A
authors: FA
authors: Krens
keywords: Color determinants; Genetics; Inheritance; QTL analysis; Rosa × hybrida; Tetraploid rose