Abstract
Flower pigment compositions of 43 accessions of Tulipa species, 6 species hybrids and 494 tulip cultivars were analysed with respect to the amount of carotenoids, and the anthocyanidins pelargonidin, cyanidin and delphinidin. After principal component analysis, the different pigment compositions appeared to be correlated with flower color. Hybrids were not intermediate between the parents in all cases. The variation found in T. gesneriana extends that of the whole rest of the genus. The biosynthetic pathway as described in Petunia, Anthirrinum and other genera can also be postulated for the genus Tulipa, but additive effects of multiple genes may be assumed, since several levels of concentration were found. Flavonoid synthesis has biological relevance in view of co-evolution with insect pollinators and male sterility.
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