Zur Genetik der Bisaboloide bei der Kamille

Abstract

Abstract Genetics of Bisaboloids in Camomile To meet international quality standards, genetic studies and breeding programmes concerning secondary plant products in medicinal plants are important. It was the intention of the present study to test existing hypotheses on the inheritance of the bisaboloids using the genetic analysis of segregating progenies from controlled, self and cross pollinations within and between different chemotypes. Such types were analysed by means of TAS‐TLC. Results from 40 interconnected progenies confirmed the biosynthetic pathway from bisabolol via bisabololoxid A to bisabolonoxid. It could further he shown that three loci act in this pathway; the genotype oo., (bisabolol) is epistatic to P/p, a gene controlling synthesis from bisabolol‐5,6‐epoxid (OO) of either bisabololoxid A(O.P.) or B (O.pp). The dominance of P appears to be incomplete. The genotype pp is epistatic to the locus N/n which governs the step from bisabololoxid A – (O.P.nn) to bisabolonoxid (O.P.N). The most desirable genotype, which contains both bisabolol and matricine, is double recessive.